Yamaha Boat 60D User Manual

60D  
70D  
OWNER’S MANUAL  
U.S.A.Edition  
LIT-18626-05-85  
6H3-28199-1P  
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Important manual information  
EMU25100  
al, please consult your Yamaha dealer.  
To the owner  
NOTE:  
Thank you for choosing a Yamaha outboard  
motor. This Owner’s Manual contains infor-  
mation needed for proper operation, mainte-  
nance and care. A thorough understanding  
of these simple instructions will help you ob-  
tain maximum enjoyment from your new  
Yamaha. If you have any question about the  
operation or maintenance of your outboard  
motor, please consult a Yamaha dealer.  
In this Owner’s Manual particularly important  
information is distinguished in the following  
ways.  
The 60TR, 70TR and the standard accesso-  
ries are used as a base for the explanations  
and illustrations in this manual. Therefore  
some items may not apply to every model.  
EMU25110  
60D, 70D  
OWNER’S MANUAL  
©2004 byYamaha Motor Corporation, USA  
1st edition, March 2004  
All rights reserved.  
Any reprinting or unauthorized use  
without the written permission of  
Yamaha Motor Corporation, USA  
is expressly prohibited.  
The Safety Alert Symbol means  
ATTENTION! BECOME ALERT! YOUR  
SAFETY IS INVOLVED!  
Printed in Japan  
EWM00780  
P/N LIT-18626-05-85  
WARNING  
Failure to follow WARNING instructions  
could result in severe injury or death to  
the machine operator, a bystander, or a  
person inspecting or repairing the out-  
board motor.  
ECM00700  
CAUTION:  
A CAUTION indicates special precautions  
that must be taken to avoid damage to the  
outboard motor.  
NOTE:  
A NOTE provides key information to make  
procedures easier or clearer.  
Yamaha continually seeks advancements in  
product design and quality. Therefore, while  
this manual contains the most current prod-  
uct information available at the time of print-  
ing, there may be minor discrepancies  
between your machine and this manual. If  
there is any question concerning this manu-  
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Table of contents  
(turn type)......................................15  
Tachometer.....................................16  
Digital tachometer ...........................16  
Oil level indicators  
(three indicators 2)........................16  
Oil level indicator (digital type) ........16  
Overheat warning indicator  
General information ..........................1  
Identification numbers record.......... 1  
Outboard motor serial number.......... 1  
Key number....................................... 1  
Emission control information........... 1  
North American models..................... 1  
Safety information ........................... 2  
Important labels............................... 3  
Warning labels .................................. 3  
(digital type) ..................................17  
Trim meter.......................................17  
Trim meter (digital type) ..................17  
Hour meter (digital type)..................17  
Warning system ............................ 18  
Overheat warning............................18  
Oil level warning and oil filter  
Basic boating rules (Rules of the  
road) ..............................................3  
Steering and sailing rules and  
sound signals.................................. 4  
Rules when encountering vessels .... 4  
Other special situations..................... 5  
clogging warning...........................19  
Fueling instructions ......................... 7 Operation......................................... 20  
Gasoline............................................ 8  
Engine oil .......................................... 8  
Battery requirement......................... 8  
Battery specifications........................ 8  
Propeller selection........................... 8  
Start-in-gear protection ................... 9  
Basic components ..........................10  
Main components.......................... 10  
Fuel tank ......................................... 10  
Fuel joint ......................................... 11  
Fuel gauge...................................... 11  
Fuel tank cap .................................. 11  
Air vent screw ................................. 11  
Remote control................................ 11  
Remote control lever....................... 11  
Neutral interlock trigger................... 12  
Neutral throttle lever........................ 12  
Throttle friction adjuster................... 12  
Engine stop lanyard switch ............. 13  
Main switch ..................................... 13  
Power trim and tilt switch on  
Installation..................................... 20  
Mounting the outboard motor..........20  
Clamping the outboard motor..........21  
Breaking in engine........................ 22  
Gasoline and engine oil mixing  
chart (50:1)....................................22  
Procedure for oil injection models...22  
Preoperation checks..................... 23  
Fuel .................................................23  
Oil....................................................23  
Controls...........................................23  
Engine.............................................23  
Operation after a long period of  
storage..........................................23  
Filling fuel and engine oil .............. 24  
Filling fuel for portable tank.............24  
Ring Free Fuel Additive...................24  
Filling oil for electric start models....25  
Oil level indicator operation.............26  
Operating engine .......................... 26  
Feeding fuel (portable tank) ............26  
Starting engine................................27  
Warming up engine....................... 28  
Electric start and prime start  
remote control or tiller handle ....... 14  
Power trim and tilt switch on  
bottom engine cowling.................. 14  
Trim tab with anode ........................ 14  
Trim rod (tilt pin).............................. 15  
Tilt support lever for power trim and  
tilt or hydro tilt model..................... 15  
Top cowling lock lever(s)  
models ..........................................28  
Shifting.......................................... 29  
Forward (tiller handle and remote  
control models) .............................29  
Reverse (automatic reverse lock  
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Table of contents  
and power trim and tilt models)..... 29  
Stopping engine ............................ 30  
Procedure ....................................... 30  
Trimming outboard motor.............. 30  
Adjusting trim angle ........................ 31  
Adjusting boat trim .......................... 32  
Tilting up and down....................... 32  
Procedure for tilting up.................... 33  
Procedure for tilting down ............... 34  
Changing gear oil............................50  
Cleaning fuel tank ...........................51  
Inspecting and replacing anode(s)..51  
Checking battery (for electric start  
models) .........................................52  
Connecting the battery....................53  
Disconnecting the battery................53  
Checking top cowling ......................53  
Coating the boat bottom..................54  
Cruising in shallow water .............. 35 Trouble Recovery............................ 55  
Power trim and tilt models / power  
tilt models...................................... 35  
Cruising in other conditions........... 35  
Maintenance.....................................37  
Specifications................................ 37  
Transporting and storing outboard  
motor ...........................................38  
Clamp screw mounting models....... 38  
Storing outboard motor ................... 38  
Procedure ....................................... 39  
Lubrication (oil injection models)..... 40  
Cleaning and anticorrosion  
Troubleshooting............................ 55  
Temporary action in emergency ... 58  
Impact damage ...............................58  
Replacing fuse ................................58  
Power trim and tilt will not operate ..59  
Starter will not operate ....................59  
Emergency starting engine .............60  
Engine fails to operate.................. 60  
Ignition system malfunction.............60  
Cold engine fails to start..................61  
Treatment of submerged motor .... 62  
Procedure........................................62  
Consumer information ................... 64  
measures...................................... 40  
Battery care..................................... 40  
Cleaning the outboard motor .......... 41  
Checking painted surface of  
Important warranty information for  
U.S.A. and Canada ..................... 64  
YAMAHA MOTOR  
motor............................................. 41  
CORPORATION, U.S.A.  
OUTBOARD MOTOR TWO  
YEAR LIMITED WARRANTY ..... 66  
IMPORTANT WARRANTY  
INFORMATION IF YOU USE  
YOUR YAMAHA OUTSIDE  
U.S.A. OR CANADA ................... 69  
Periodic maintenance.................... 41  
Replacement parts.......................... 41  
Maintenance chart .......................... 42  
Greasing ......................................... 43  
Cleaning and adjusting spark plug.. 44  
Checking fuel system...................... 44  
Inspecting fuel filter......................... 45  
Cleaning fuel filter ........................... 45  
Inspecting idling speed ................... 46  
Checking water in engine oil tank ... 46  
Checking wiring and connectors..... 47  
Exhaust leakage ............................. 47  
Water leakage................................. 47  
Checking power trim and tilt  
system .......................................... 47  
Checking propeller.......................... 48  
Removing the propeller................... 49  
Installing the propeller..................... 49  
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General information  
EMU25170  
reference in case you need a new key.  
Identification numbers record  
EMU25182  
Outboard motor serial number  
The outboard motor serial number is  
stamped on the label attached to the port  
side of the clamp bracket or the upper part of  
the swivel bracket.  
Record your outboard motor serial number in  
the spaces provided to assist you in ordering  
spare parts from your Yamaha dealer or for  
reference in case your outboard motor is sto-  
len.  
1. Key number  
EMU25220  
Emission control information  
EMU25230  
1
North American models  
This engine conforms to U.S. Environmental  
Protection Agency (EPA) regulations for ma-  
rine SI engines. See the label affixed to your  
ZMU02931  
engine for details.  
EMU30390  
1. Outboard motor serial number location  
Approval label of emission control certif-  
icate  
This label is attached to the bottom cowling.  
Existing Technology; N/A  
1
EMU25190  
Key number  
If a main key switch is equipped with the mo-  
tor, the key identification number is stamped  
on your key as shown in the illustration.  
Record this number in the space provided for  
ZMU04898  
1. Approval label location  
1
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General information  
should give you an understanding of the  
motor and its operation.  
G Before operating the boat, read any own-  
ers or operators manuals supplied with it  
and all labels. Be sure you understand  
each item before operating.  
EMISSION CONTROL INFORMATION  
ENGINE FAMILY :  
THIS ENGINE CONFORMS TO 21 U.S. EPA REGULATIONS FOR MARINE SI ENGINES.  
REFER TO THE OWNERS MANUAL FOR MAINTENANCE SPECIFICATIONS AND ADJUSTMENTS.  
g/kw-hr  
FELs :  
IDLE SPEED :  
rpm IN NEUTRAL  
SPARK PLUG :  
SPARK PLUG GAP (mm) :  
3
DISPLACEMENT :  
ADVERTISED POWER :  
cm  
kw  
FUEL : GASOLINE  
VALVE LASH (mm) :  
IN  
EX  
G Do not overpower the boat with this out-  
board motor. Overpowering the boat could  
result in loss of control. The rated power of  
the outboard should be equal to or less  
than the rated horsepower capacity of the  
boat. If the rated horsepower capacity of  
the boat is unknown, consult the dealer or  
boat manufacturer.  
ZMU04304  
EMU25261  
Manufactured date label  
This label is attached to the clamp bracket or  
the swivel bracket.  
G Do not modify the outboard. Modifications  
could make the motor unfit or unsafe to  
use.  
G Never operate after drinking alcohol or tak-  
ing drugs. About 50% of all boating fatali-  
ties involve intoxication.  
G Have an approved personal flotation de-  
vice (PFD) on board for every occupant. It  
is a good idea to wear a PFD whenever  
boating. At a minimum, children and non-  
swimmers should always wear PFDs, and  
everyone should wear PFDs when there  
are potentially hazardous boating condi-  
tions.  
ZMU04893  
1
1. Manufactured date label location  
G Gasoline is highly flammable, and its va-  
pors are flammable and explosive. Handle  
and store gasoline carefully. Make sure  
there are no gas fumes or leaking fuel be-  
fore starting the engine.  
G This product emits exhaust gases which  
contain carbon monoxide, a colorless,  
odorless gas which may cause brain dam-  
age or death when inhaled. Symptoms in-  
clude nausea, dizziness, and drowsiness.  
Keep cockpit and cabin areas well ventilat-  
ed. Avoid blocking exhaust outlets.  
G Check throttle, shift, and steering for prop-  
EMU25361  
Safety information  
G Before mounting or operating the outboard  
motor, read this entire manual. Reading it  
2
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General information  
er operation before starting the engine.  
National Marine Manufacturers Associa-  
G Attach the engine stop switch lanyard cord tion (NMMA)  
to a secure place on your clothing, or your 401 N. Michigan Ave.  
arm or leg while operating. If you acciden-  
Chicago, Il 60611  
tally leave the helm, the cord will pull from Marine Retailers Association of America  
the switch, stopping the engine.  
G Know the marine laws and regulations  
where you will be boatingand obey  
them. For basic boating rules, see Rules  
of the roadon page 3.  
G Stay informed about the weather. Check  
weather forecasts before boating. Avoid  
boating in hazardous weather.  
155 N. Michigan Ave.  
Chicago, Il 60601  
EMU25380  
Important labels  
EMU25395  
Warning labels  
G Tell someone where you are going: leave  
a Float Plan with a responsible person. Be  
sure to cancel the Float Plan when you re-  
turn.  
G Use common sense and good judgment  
when boating. Know your abilities, and be  
sure you understand how your boat han-  
dles under the different boating conditions  
you may encounter. Operate within your  
limits, and the limits of your boat. Always  
operate at safe speeds, and keep a careful  
watch for obstacles and other traffic.  
G Always watch carefully for swimmers dur-  
ing the engine operation.  
G Stay away from swimming areas.  
G When a swimmer is in the water near you  
shift into neutral and shut off the engine.  
Be informed about boating safety. Additional  
publications and information can be obtained  
from many organizations, including the fol-  
lowing:  
ZMU03824  
EMU25401  
Label  
EWM01260  
WARNING  
G Be sure shift control is in neutral before  
starting engine. (except 2HP)  
G Do not touch or remove electrical parts  
when starting or during operation.  
G Keep hands, hair, and clothes away  
from flywheel and other rotating parts  
while engine is running.  
EMU25500  
Basic boating rules (Rules of  
the road)  
United States Coast Guard  
Consumer Affairs Staff (G-BC)  
Office of Boating, Public, and Consumer Af-  
fairs  
U.S. Coast Guard Headquarters  
Just as there are rules which apply when you  
are driving on streets and high ways, there  
are waterway rules which apply when you  
are driving your boat. These rules are used  
internationally, and are also enforced by the  
United States Coast Guard and local agen-  
Washington, D.C. 20593-0001  
Boating Safety Hotline: 1-800-368-5647  
3
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General information  
cies. You should be aware of these rules, you are doing.  
and follow them whenever you encounter The general prudential rule”  
This rule is called Rule 2 in the International  
another vessel on the water.  
Rules and says,  
Several sets of rules prevail according to  
geographic location, but are all basically the  
same as the International Rules of the Road.  
The rules presented here in your Owners  
Manual are condensed, and have been pro-  
vided for your convenience only. Consult  
your local U.S. Coast Guard Auxiliary or De-  
partment of Motor Vehicles for a complete  
set of rules governing the waters in which  
In obeying and construing these rules due  
regard shall be had to all dangers of naviga-  
tion and collision, and to any special circum-  
stances, which may render a departure from  
the above rules necessary in order to avoid  
immediate danger.”  
In other words, follow the standard rules ex-  
cept when a collision will occur unless both  
vessels try to avoid each other. If that is the  
case, both vessels become Give-Wayves-  
you will be using your boat.  
EMU25510  
Steering and sailing rules and sound  
signals  
sels.  
EMU25520  
Rules when encountering vessels  
There are three main situations which you  
may encounter with other vessels which  
could lead to a collision unless the Steering  
Rules are followed:  
Meeting: (you are approaching another ves-  
sel head-on)  
Crossing: (you are traveling across the oth-  
er vessels path)  
Whenever two vessels on the water meet  
one another, one vessel has the right-of-  
way; it is called the stand-onvessel. The  
vessel which does not have the right-of-way  
is called the give-wayor burdenedvessel.  
These rules determine which vessel has the  
right-of-way, and what each vessel should  
do.  
Stand-on vessel  
Overtaking: (you are passing or being  
passed by another vessel)  
The vessel with the right-of-way has the duty  
to continue its course and speed, except to  
avoid an immediate collision. When you  
maintain your direction and speed, the other  
vessel will be able to determine how best to  
avoid you.  
In the following illustration, your boat is in the  
center. You should give the right-of-way to  
any vessels shown in white area (you are the  
Give-Way vessel). Any vessels in the shad-  
ed area must yield to you (they are the Give-  
Give-way vessel  
The vessel which does not have the right-of- Way vessels). Both you and the meeting  
way has the duty to take positive and timely vessel must alter course to avoid each other.  
action to stay out of the way of the Stand-On  
vessel. Normally, you should not cross in  
front of the vessel with the right-of-way. You  
should slow down or change directions brief-  
ly and pass behind the other vessel. You  
should always move in such a way that the  
operator of the other vessel can see what  
4
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General information  
Meeting  
Overtaking  
If you are meeting another power vessel If you are passing another vessel, you are  
head on, and are close enough to run the risk the Give-Wayvessel. This means that the  
of collision, neither of you has the right-of- other vessel is expected to maintain its  
way! Both of you should alter course to avoid course and speed. You must stay out of its  
an accident. You should keep the other ves- way until you are clear of it. Likewise, if an-  
sel on your port (left) side. This rule doesnt other vessel is passing you, you should  
apply if both of you will clear one another if maintain your speed and direction so that the  
you continue on your set course and speed. other vessel can steer itself around you.  
EMU25530  
Other special situations  
There are three other rules you should be  
aware of when driving your boat around oth-  
er vessels.  
Narrow channels and bends  
When navigating in narrow channels, you  
should keep to the right when it is safe and  
practical to do so. If the operator of a power-  
driven vessel is preparing to go around a  
bend that may obstruct the view of other wa-  
Crossing  
ter vessels, the operator should sound a pro-  
When two power driven vessels are crossing  
longed blast on the whistle (4 to 6 seconds).  
each others path close enough to run the  
If another vessel is around the bend, it too  
risk of collision, the vessel which has the oth-  
should sound the whistle. Even if no reply is  
er on the starboard (right) side must keep out  
heard, however, the vessel should still pro-  
of the way of the other. If the other vessel is  
ceed around the bend with caution. If you  
on your right, you must keep out of its way;  
navigate such waters with your boat, you will  
you are the Give-Way vessel. If the other  
need to carry a portable air horn, available  
vessel is on your port (left) side, remember  
from local marine supply stores.  
that you should maintain course and direc-  
tion, provided the other vessel gives you the  
right-of-way as it should.  
Fishing vessel right-of-way  
All vessels which are fishing with nets, lines  
5
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General information  
or trawls are considered to be fishing ves- This system uses buoys and signs with dis-  
selsunder the International Rules. Vessels tinctive shapes and colors to show regulato-  
with trolling lines are not considered fishing ry or advisory information. These markers  
vessels. Fishing vessels have the right-of- are white with black letters and orange  
way regardless of position. Fishing vessels boarders. They signify speed zones, restrict-  
cannot, however, impede the passage of ed areas, danger areas, and general infor-  
other vessels in narrow channels.  
mation.  
Sailing vessel right-of-way  
Remember, markings may vary by geo-  
graphic location. Always consult local boat-  
ing authorities before driving your boat in  
unfamiliar waters.  
Sailing vessels should normally be given the  
right-of-way. The exceptions to this are:  
1. When the sailing vessel is overtaking  
the power-driven vessel, the power-driv-  
en vessel has the right-of-way.  
2. Sailing vessels should keep clear of any  
fishing vessel.  
3. In a narrow channel, a sailing vessel  
should not hamper the safe passage of  
a power-driven vessel which can navi-  
gate only in such a channel.  
Reading buoys and other markers  
The waters of the United states are marked  
for safe navigation by the lateral system of  
buoyage. Simply put, buoys and markers  
have an arrangement of shapes, colors,  
numbers and lights to show which side of the  
buoy a boater should pass on when navigat-  
ing in a particular direction. The markings on  
these buoys are oriented from the perspec-  
tive of being entered from seaward (the boat-  
er is going towards the port). This means that  
red buoys are passed on the starboard  
(right) side when proceeding from open wa-  
ter into port, and black buoys are to port (left)  
side. When navigating out of port, your posi-  
tion with respect to the buoys should be re-  
versed; red buoys should be to port and  
black buoys to starboard.  
Many bodies of water used by boaters are  
entirely within the boundaries of a particular  
state. The Uniform State Waterway Marking  
System has been devised for these waters.  
6
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General information  
ZMU01708  
EMU25540  
away from sparks, flames, or other  
Fueling instructions  
sources of ignition.  
EWM00010  
G Stop engine before refueling.  
G Refuel in a well-ventilated area. Refuel  
portable fuel tanks off the boat.  
G Take care not to spill gasoline. If gaso-  
line spills, wipe it up immediately with  
WARNING  
GASOLINE AND ITS VAPORS ARE HIGH-  
LY FLAMMABLE AND EXPLOSIVE!  
G Do not smoke when refueling, and keep  
7
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General information  
EMU25650  
dry rags.  
Engine oil  
G Do not overfill the fuel tank.  
G Tighten the filler cap securely after re-  
fueling.  
G If you should swallow some gasoline,  
inhale a lot of gasoline vapor, or get  
gasoline in your eyes, get immediate  
medical attention.  
Recommended engine oil:  
YAMALUBE 2-stroke outboard motor  
oil  
If the recommended engine oil is not avail-  
able, another 2-stroke engine oil with an  
G If any gasoline spills onto your skin, im-  
mediately wash with soap and water.  
Change clothing if gasoline spills on it.  
G Touch the fuel nozzle to the filler open-  
ing or funnel to help prevent electro-  
static sparks.  
NMMA-certified TC-W3 rating may be used.  
EMU25690  
Battery requirement  
ECM01060  
CAUTION:  
Do not use a battery that does not meet  
the specified capacity. If a battery which  
does not meet specifications is used, the  
electric system could perform poorly or  
be overloaded, causing electric system  
damage.  
ECM00010  
CAUTION:  
Use only new clean gasoline which has  
been stored in clean containers and is not  
contaminated with water or foreign mat-  
ter.  
For electric start models, choose a battery  
which meets the following specifications.  
EMU25570  
EMU25711  
Gasoline  
Battery specifications  
If knocking or pinging occurs, use a different  
brand of gasoline or premium unleaded fuel.  
Minimum cold cranking amps (CCA/  
SAE):  
380.0 A  
Minimum marine cranking amps (MCA/  
ABYC):  
Recommended gasoline:  
Regular unleaded gasoline with a min-  
imum octane rating of 86 (Pump Oc-  
tane Number) = (R+M)/2  
502.0 A  
Minimum reserve capacity (RC/SAE):  
124 minutes  
Gasohol  
There are two types of gasohol: gasohol con-  
taining ethanol and that containing metha-  
nol. Gasohol containing ethanol can be used  
if ethanol content does not exceed 10% and  
the fuel meets minimum octane ratings.  
Yamaha does not recommended gasohol  
containing methanol because it can cause  
fuel system damage or engine performance  
problems.  
EMU25741  
Propeller selection  
The performance of your outboard motor will  
be critically affected by your choice of propel-  
ler, as an incorrect choice could adversely  
affect performance and could also seriously  
damage the motor. Engine speed depends  
on the propeller size and boat load. If engine  
8
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General information  
speed is too high or too low for good engine For instructions on propeller removal and in-  
performance, this will have an adverse effect stallation, see page 48.  
EMU25770  
on the engine.  
Start-in-gear protection  
Yamaha outboard motors are fitted with pro-  
Yamaha outboard motors or Yamaha-ap-  
proved remote control units are equipped  
with start-in-gear protection device(s). This  
feature permits the engine to be started only  
when it is in neutral. Always select neutral  
before starting the engine.  
pellers chosen to perform well over a range  
of applications, but there may be uses where  
a propeller with a different pitch would be  
more appropriate. For a greater operating  
load, a smaller-pitch propeller is more suit-  
able as it enables the correct engine speed  
to be maintained. Conversely, a larger-pitch  
propeller is more suitable for a smaller oper-  
ating load.  
Yamaha dealers stock a range of propellers,  
and can advise you and install a propeller on  
your outboard that is best suited to your ap-  
plication.  
x
-
1
2 3  
ZMU04605  
1. Propeller diameter in inches  
2. Propeller pitch in inches  
3. Type of propeller (propeller mark)  
NOTE:  
Select a propeller which will allow the engine  
to reach the middle or upper half of the oper-  
ating range at full throttle with the maximum  
boat load. If operating conditions such as  
light boat loads then allow the engine r/min to  
rise above the maximum recommended  
range, reduce the throttle setting to maintain  
the engine in the proper operating range.  
9
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Basic components  
EMU25795  
Main components  
NOTE:  
* May not be exactly as shown; also may not be included as standard equipment on all mod-  
els.  
60D, 70D  
12  
13  
15  
1
2
11  
10  
14  
16  
9
8
7
6
3
4
5
ZMU04945  
1. Top cowling  
15. Remote control box (side mount type)*  
16. Fuel tank*  
2. Top cowling lock lever  
3. Anti-cavitation plate  
4. Trim tab (anode)  
5. Propeller  
EMU25802  
Fuel tank  
If your model was equipped with a portable  
fuel tank, its function is as follows.  
EWM00020  
6. Cooling water inlet  
7. Anode  
8. Trim rod  
WARNING  
9. Clamp bracket  
10. Tilt support knob  
11. Power trim and tilt switch  
12. Tachometer*  
13. Trim meter*  
The fuel tank supplied with this engine is  
its dedicated fuel reservoir and must not  
be used as a fuel storage container. Com-  
mercial users should conform to relevant  
licensing or approval authority regula-  
14. Digital tachometer*  
10  
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Basic components  
tions.  
1
3
4
2
ZMU03157  
1. Power trim and tilt switch  
2. Remote control lever  
1. Fuel joint  
3. Neutral interlock trigger  
4. Neutral throttle lever  
5. Main switch / choke switch  
6. Engine stop lanyard switch  
7. Throttle friction adjuster  
2. Fuel gauge  
3. Fuel tank cap  
4. Air vent screw  
EMU25830  
Fuel joint  
EMU26190  
This joint is used to connect the fuel line.  
EMU25841  
Remote control lever  
Moving the lever forward from the neutral po-  
sition engages forward gear. Pulling the le-  
ver back from neutral engages reverse. The  
engine will continue to run at idle until the le-  
ver is moved about 35° (a detent can be felt).  
Moving the lever farther opens the throttle,  
and the engine will begin to accelerate.  
Fuel gauge  
This gauge is located on either the fuel tank  
cap or on the fuel joint base. It shows the ap-  
proximate amount of fuel remaining in the  
tank.  
EMU25850  
Fuel tank cap  
This cap seals the fuel tank. When removed,  
the tank can be filled with fuel. To remove the  
cap, turn it counterclockwise.  
EMU25860  
Air vent screw  
This screw is on the fuel tank cap. To loosen  
the screw, turn it counterclockwise.  
EMU26180  
Remote control  
The remote control lever actuates both the  
shifter and the throttle. The electrical switch-  
es are mounted on the remote control box.  
1. Neutral “ ”  
2. Forward “ ”  
3. Reverse “ ”  
4. Shift  
5. Fully closed  
11  
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Basic components  
6. Throttle  
7. Fully open  
EMU26201  
Neutral interlock trigger  
To shift out of neutral, first pull the neutral in-  
terlock trigger up.  
1. Fully open  
2. Fully closed  
EMU25970  
Throttle friction adjuster  
A friction device provides adjustable resis-  
tance to movement of the throttle grip or the  
remote control lever, and can be set accord-  
ing to operator preference.  
To increase resistance, turn the adjuster  
clockwise. To decrease resistance, turn the  
1. Neutral interlock trigger  
EMU26211  
Neutral throttle lever  
To open the throttle without shifting into ei-  
ther forward or reverse, put the remote con-  
trol lever in the neutral position and lift the  
neutral throttle lever.  
adjuster counterclockwise.  
EWM00030  
WARNING  
Do not overtighten the friction adjuster. If  
there is too much resistance, it could be  
difficult to move throttle lever or grip,  
which could result in an accident.  
NOTE:  
The neutral throttle lever will operate only  
when the remote control lever is in neutral.  
The remote control lever will operate only  
when the neutral throttle lever is in the closed  
position.  
When constant speed is desired, tighten the  
adjuster to maintain the desired throttle set-  
ting.  
12  
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Basic components  
EMU25990  
Engine stop lanyard switch  
The lock plate must be attached to the en-  
gine stop switch for the engine to run. The  
lanyard should be attached to a secure place  
on the operators clothing, or arm or leg.  
Should the operator fall overboard or leave  
the helm, the lanyard will pull out the lock  
plate, stopping ignition to the engine. This  
will prevent the boat from running away un-  
der power.  
EWM00120  
1. Lanyard  
2. Lock plate  
WARNING  
G Attach the engine stop switch lanyard  
to a secure place on your clothing, or  
your arm or leg while operating.  
EMU26090  
Main switch  
The main switch controls the ignition system;  
G Do not attach the lanyard to clothing its operation is described below.  
that could tear loose. Do not route the G “  
(off)  
lanyard where it could become entan- With the main switch in the “  
gled, preventing it from functioning.  
tion, the electrical circuits are off, and the key  
(off) posi-  
G Avoid accidentally pulling the lanyard can be removed.  
during normal operation. Loss of en- G “ ” (on)  
gine power means the loss of most With the main switch in the “ ” (on) posi-  
steering control. Also, without engine tion, the electrical circuits are on, and the key  
power, the boat could slow rapidly. This cannot be removed.  
could cause people and objects in the  
boat to be thrown forward.  
G “  
(start)  
With the main switch in the “  
(start) po-  
sition, the starter motor turns to start the en-  
gine. When the key is released, it returns  
automatically to the “ ” (on) position.  
NOTE:  
The engine cannot be started with the lock  
plate removed.  
13  
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Basic components  
EMU26141  
while the boat is moving could increase  
the risk of falling overboard and could  
distract the operator, increasing the risk  
of collision with another boat or an obsta-  
cle.  
Power trim and tilt switch on remote  
control or tiller handle  
The power trim and tilt system adjusts the  
outboard motor angle in relation to the tran-  
som. Pressing the switch “ ” (up) trims the  
outboard motor up, then tilts it up. Pressing  
the switch “ ” (down) tilts the outboard mo-  
tor down and trims it down. When the switch  
is released, the outboard motor will stop in its  
current position.  
UP  
NOTE:  
For instructions on using the power trim and  
tilt switch, see pages 30 and 32.  
DOWN  
ZMU03096  
NOTE:  
For instructions on using the power trim and  
tilt switch, see page 32.  
EMU26240  
Trim tab with anode  
The trim tab should be adjusted so that the  
steering control can be turned to either the  
right or left by applying the same amount of  
force.  
EWM00840  
EMU26151  
Power trim and tilt switch on bottom  
engine cowling  
WARNING  
An improperly adjusted trim tab could  
cause difficult steering. Always test run  
after the trim tab has been installed or re-  
placed to be sure steering is correct. Be  
sure you have tightened the bolt after ad-  
justing the trim tab.  
The power trim and tilt switch is located on  
the side of the bottom engine cowling. Press-  
ing the switch “ ” (up) trims the outboard  
motor up, then tilts it up. Pressing the switch  
(down) tilts the outboard motor down  
and trims it down. When the switch is re-  
leased, the outboard motor will stop in its  
current position.  
EWM01030  
If the boat tends to veer the left (port side),  
turn the trim tab rear end to the port side A”  
in the figure. If the boat tends to veer the right  
(starboard side), turn the trim tab end to the  
WARNING  
Use the power trim and tilt switch located  
on the bottom engine cowling only when  
the boat is at a complete stop with the en-  
gine off. Attempting to use this switch  
starboard side Bin the figure.  
ECM00840  
CAUTION:  
The trim tab also serves as an anode to  
14  
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Basic components  
protect the engine from electrochemical  
corrosion. Never paint the trim tab as it  
will become ineffective as an anode.  
A
ZMU02528  
1
EMU26372  
B
Top cowling lock lever(s) (turn type)  
To remove the engine top cowling, turn the  
lock lever(s) and lift off the cowling. When in-  
stalling the cowling, check to be sure it fits  
properly in the rubber seal. Then lock the  
cowling again by returning the lever(s) to the  
lock position.  
2
ZMU03097  
1. Trim tab  
2. Bolt  
EMU26261  
Trim rod (tilt pin)  
The position of the trim rod determines the  
minimum trim angle of the outboard motor in  
relation to the transom.  
1
ZMU03827  
1. Top cowling lock lever(s)  
ZMU02526  
EMU26340  
Tilt support lever for power trim and  
tilt or hydro tilt model  
To keep the outboard motor in the tilted up  
position, lock the tilt support lever to the  
clamp bracket.  
1
ZMU02596  
1. Top cowling lock lever(s)  
15  
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Basic components  
EMU26470  
7. Engine trouble warning indicator  
8. Set button  
9. Mode button  
Tachometer  
This gauge shows the engine speed and has  
the following functions.  
NOTE:  
The water separator and engine trouble  
warning indicators only operate when the en-  
gine is equipped with the appropriate func-  
tions.  
1
EMU26540  
2
Oil level indicators (three indicators  
2)  
The indicators on the gauge show the status  
ZMU04577  
of the oil level. For details on how to read the  
1. Tachometer  
2. Oil level indicator  
indicators, see page 26.  
ECM00030  
CAUTION:  
EMU26491  
Do not operate the engine without oil. Se-  
rious engine damage will occur.  
Digital tachometer  
The tachometer shows the engine speed  
and has the following functions.  
NOTE:  
All segments of the display will light momen-  
tarily after the main switch is turned on and  
will return to normal thereafter.  
1
6
7
ZMU04580  
1
2
1. Oil level indicators  
3
EMU26550  
Oil level indicator (digital type)  
This indicator shows the engine oil level. If  
the oil level falls below the lower limit, the  
warning indicator will start to blink. For fur-  
4
5
9
ZMU01958  
8
1. Tachometer  
2. Trim meter  
3. Hour meter  
ther information, see page 19.  
ECM00030  
4. Oil level indicator  
5. Overheat warning indicator  
6. Water separator warning indicator  
CAUTION:  
Do not operate the engine without oil. Se-  
16  
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Basic components  
rious engine damage will occur.  
ZMU04581  
1
ZMU01867  
NOTE:  
Memorize the trim angles that work best for  
your boat under different conditions. Adjust  
the trim angle to the desired setting with the  
power trim and tilt switch.  
1. Oil level indicator  
EMU26581  
Overheat warning indicator (digital  
type)  
EMU26620  
If the engine temperature rises too high, the  
warning indicator will start to blink. For fur-  
ther information on reading the indicator, see  
page 18.  
ECM00050  
Trim meter (digital type)  
This meter shows the trim angle of your out-  
board motor.  
NOTE:  
G Memorize the trim angles that work best  
for your boat under different conditions.  
Adjust the trim angle to the desired using  
the power trim and tilt switch.  
G If the trim angle of your motor exceeds the  
trim operating range, the top segment on  
the trim meter display will blink.  
CAUTION:  
Do not continue to run the engine if the  
overheat warning indicator is on. Serious  
engine damage will occur.  
1
ZMU01868  
1. Overheat warning indicator  
ZMU01869  
EMU26610  
EMU26650  
Trim meter  
Hour meter (digital type)  
This meter shows the number of hours the  
This gauge shows the trim angle of your out-  
board motor.  
17  
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Basic components  
engine has been run. It can be set to show Activation of warning device  
G The engine speed will automatically de-  
crease to about 2000 r/min.  
the total number of hours or the number of  
hours for the current trip. The display can  
also be turned on and off.  
ZMU04766  
ZMU01870  
G The overheat warning indicator will light (if  
equipped on the bottom cowling or the ta-  
chometer).  
G Changing the display format  
G Pressing the “  
(mode) button chang-  
es the display format in the following pat-  
tern:  
G Total hoursTrip hoursDisplay off  
G Resetting the trip hours  
G Simultaneously pressing the “ ” (set)  
and “  
(mode) buttons for more than  
1 second while the trip hours are displayed  
resets the trip counter to 0 (zero).  
NOTE:  
ZMU01757  
The total number of hours the engine has  
G The buzzer will sound (if equipped on the  
tiller handle, remote control box, or main  
switch panel).  
been run cannot be reset.  
EMU26801  
Warning system  
ECM00090  
CAUTION:  
Do not continue to operate the engine if a  
warning device has activated. Consult  
your Yamaha dealer if the problem can-  
not be located and corrected.  
EMU26813  
Overheat warning  
This engine has an overheat warning device.  
If the engine temperature rises too high, the  
warning device will activate.  
If the warning system has activated, stop the  
engine and check the cooling water inlet for  
18  
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Basic components  
clogging.  
ZMU03942  
ZMU03026  
G The buzzer will sound.  
EMU26843  
Oil level warning and oil filter  
clogging warning  
Oil injection models  
This engine has an oil level warning system.  
If the oil level falls below the lower limit, the  
warning system will activate.  
Activation of warning device  
G Engine speed will automatically decrease  
to about 2000 r/min.  
If the warning system has been activated,  
stop the engine and check for the cause.  
NOTE:  
The warning for oil filter clogging is similar to  
the warnings for low oil level and overheat-  
ing. To make troubleshooting easier, check  
for engine overheating first, then oil level,  
and finally oil filter clogging.  
ZMU04586  
G The oil level warning indicator will light.  
1
ZMU03828  
1. Oil lter  
19  
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Operation  
EMU26901  
specific boat and motor combination.  
Installation  
EWM00830  
ECM00110  
WARNING  
CAUTION:  
Improper mounting of the outboard mo-  
tor could result in hazardous conditions  
such as poor handling, loss of control, or  
fire hazards. Observe the following:  
G For permanently mounted models, your  
dealer or other person experienced in  
proper rigging should mount the motor.  
If you are mounting the motor yourself,  
you should be trained by an experi-  
enced person.  
Incorrect engine height or obstructions  
to smooth water flow (such as the design  
or condition of the boat, or accessories  
such as transom ladders or depth finder  
transducers) can create airborne water  
spray while the boat is cruising. Severe  
engine damage may result if the motor is  
operated continuously in the presence of  
airborne water spray.  
G For portable models, your dealer or oth-  
er person experienced in proper out-  
board motor mounting should show  
you how to mount your motor.  
NOTE:  
During water testing check the buoyancy of  
the boat, at rest, with its maximum load.  
Check that the static water level on the ex-  
haust housing is low enough to prevent wa-  
ter entry into the powerhead, when water  
rises due to waves when the outboard is not  
running.  
Mount the outboard motor on the center line  
(keel line) of the boat, and ensure that the  
boat itself is well balanced. Otherwise the  
boat will be hard to steer. For boats without  
a keel or which are asymmetrical, consult  
your dealer.  
EMU26910  
Mounting the outboard motor  
EWM00820  
WARNING  
G Overpowering a boat could cause se-  
vere instability. Do not install an out-  
board motor with more horsepower  
than the maximum rating on the capac-  
ity plate of the boat. If the boat does not  
have a capacity plate, consult the boat  
manufacturer.  
G The information presented in this sec-  
tion is intended as reference only. It is  
not possible to provide complete in-  
structions for every possible boat and  
motor combination. Proper mounting  
depends in part on experience and the  
1
ZMU01760  
1. Center line (keel line)  
EMU26930  
Mounting height (boat bottom)  
To run your boat at optimum efficiency, the  
water resistance (drag) of the boat and out-  
board motor must be made as little as possi-  
ble. The mounting height of the outboard  
20  
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Operation  
motor greatly affects the water resistance. If  
the mounting height is too high, cavitation  
tends to occur, thus reducing the propulsion;  
and if the propeller tips cut the air, the engine  
speed will rise abnormally and cause the en-  
gine to overheat. If the mounting height is too  
low, the water resistance will increase and  
thereby reduce engine efficiency. Mount the  
outboard motor so that the anti-cavitation  
plate is in alignment with the bottom of the  
boat.  
come loose due to engine vibration.  
EWM00640  
WARNING  
Loose clamp screws could allow the out-  
board motor to fall off or move on the  
transom. This could cause loss of control  
and serious injury. Make sure the tran-  
som screws are tightened securely. Oc-  
casionally check the screws for tightness  
during operation.  
ZMU02012  
ZMU01762  
2. If the engine restraint cable attachment  
is equipped on your engine, an engine  
restraint cable or chain should be used.  
Attach one end to the engine restraint  
cable attachment and the other to a se-  
cure mounting point on the boat. Other-  
wise the engine could be completely lost  
if it accidentally falls off the transom.  
NOTE:  
G The optimum mounting height of the out-  
board motor is affected by the boat/motor  
combination and the desired use. Test  
runs at different heights can help deter-  
mine the optimum mounting height. Con-  
sult your Yamaha dealer or boat  
manufacturer for further information on de-  
termining the proper mounting height.  
G For instructions on setting the trim angle of  
the outboard motor, see page 30.  
EMU26970  
Clamping the outboard motor  
1. Place the outboard motor on the tran-  
som so that it is positioned as close to  
the center as possible. Tighten the tran-  
som clamp screws evenly and securely.  
Occasionally check the clamp screws  
for tightness during operation of the out-  
board motor because they could be-  
ZMU02013  
3. Secure the clamp bracket to the transom  
using the bolts provided with the out-  
21  
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Operation  
EMU27060  
board (if packed). For details, consult  
your Yamaha dealer.  
Gasoline and engine oil mixing chart  
(50:1)  
EWM00650  
WARNING  
Avoid using bolts, nuts or washers other  
than those contained in the engine pack-  
aging. If used, they must be of at least the  
same quality of material and strength and  
must be tightened securely. After tighten-  
ing, test run the engine and check their  
tightness.  
1. : Gasoline  
2. : Engine oil  
ECM00150  
CAUTION:  
Be sure to mix gasoline and oil complete-  
ly, otherwise the engine may be dam-  
aged.  
1
EMU30310  
ZMU02014  
Procedure for oil injection models  
Run the engine under load (in gear with a  
propeller installed) as follows.  
1. Bolts  
1. First 10 minutes:  
EMU27020  
Run the engine at the lowest possible  
speed. A fast idle in neutral is best.  
2. Next 50 minutes:  
Breaking in engine  
Your new engine requires a period of break-  
in to allow mating surfaces of moving parts to  
wear in evenly. Correct break-in will help en-  
sure proper performance and longer engine  
Do not exceed half throttle (approxi-  
mately 3000 r/min). Vary engine speed  
occasionally. If you have an easy-plan-  
ing boat, accelerate at full throttle onto  
plane, then immediately reduce the  
throttle to 3000 r/min or less.  
life.  
ECM00140  
CAUTION:  
G Failure to follow the break-in procedure  
could result in reduced engine life or  
even severe engine damage.  
G Premix fuel must be used during break-  
in in addition to oil in the oil injection  
system.  
3. Second hour:  
Accelerate at full throttle onto plane,  
then reduce engine speed to three-quar-  
ter throttle (approximately 4000 r/min).  
Vary engine speed occasionally. Run at  
full throttle for one minute, then allow  
about 10 minutes of operation at three-  
quarter throttle or less to let the engine  
22  
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Operation  
EMU27120  
cool.  
Oil  
4. Third through tenth hours:  
Avoid operating at full throttle for more  
than 5 minutes at a time. Let the engine  
cool between full-throttle runs. Vary en-  
gine speed occasionally.  
G Check to be sure you have plenty of oil for  
your trip.  
EMU27130  
Controls  
G Check throttle, shift, and steering for prop-  
er operation before starting the engine.  
G The controls should work smoothly, with-  
out binding or unusual free play.  
G Look for loose or damaged connections.  
G Check operation of the starter and stop  
switches when the outboard motor is in the  
5. After the first 10 hours:  
Operate the engine normally. Use only  
straight gasoline in the fuel tank. The  
Yamaha oil injection system provides  
proper lubrication for normal operation.  
EMU27101  
Preoperation checks  
water.  
EMU27140  
EWM00080  
WARNING  
Engine  
If any item in the preoperation check is  
not working properly, have it inspected  
and repaired before operating the out-  
board motor. Otherwise an accident  
could occur.  
G Check the engine and engine mounting.  
G Look for loose or damaged fasteners.  
G Check the propeller for damage.  
EMU27170  
Operation after a long period of  
storage  
ECM00120  
When operating the engine after a long peri-  
od (12 months) of storage, proceed as fol-  
lows:  
1. Use a 50:1 gasoline-oil mixture to start  
the engine.  
CAUTION:  
Do not start the engine out of water. Over-  
heating and serious engine damage can  
occur.  
EMU27110  
2. Start the engine. Leave it idling.  
EWM00090  
Fuel  
G Check to be sure you have plenty of fuel  
for your trip.  
WARNING  
G Do not touch or remove electrical parts  
when starting or during operation.  
G Keep hands, hair, and clothes away  
from the flywheel and other rotating  
parts while the engine is running.  
G Make sure there are no fuel leaks or gaso-  
line fumes.  
G Check fuel line connections to be sure they  
are tight (if equipped Yamaha fuel tank or  
boat tank).  
G Be sure the fuel tank is positioned on a se-  
cure, flat surface, and that the fuel line is  
not twisted or flattened, or likely to contact  
sharp objects (if equipped Yamaha fuel  
tank or boat tank).  
3. Watch for oil flowing through the oil feed  
pipes. After any air in the oil lines has  
been expelled, the oil injection system  
should supply oil normally. If no oil is  
flowing after 10 minutes of idling, consult  
your Yamaha dealer.  
23  
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Operation  
ZMU03829  
ZMU03012  
ECM00130  
EMU27270  
Ring Free Fuel Additive  
CAUTION:  
Gasoline is a precise blend of many different  
substances, each chosen to give certain  
characteristics. Gasoline blends have been  
changing in recent years in response to con-  
cerns about pollution and resulting emis-  
sions regulations. One of the most obvious  
changes has been the elimination of lead  
from most fuels.  
As gasoline has changed, the amount of ad-  
ditives such as aromatics and oxygenates  
has increased. These additives are impor-  
tant for the engines in passenger cars, but  
they can have detrimental effects in marine  
engines, because of increased deposits in  
the combustion chamber. When enough de-  
posits collect, piston rings begin sticking.  
Performance drops and engine wear in-  
creases dramatically.  
While many additives available may reduce  
deposits, Yamaha recommends the use of  
Ring Free Fuel Additive, available from  
your Yamaha dealer. Ring Free Fuel Addi-  
tive has repeatedly proven its ability to clean  
combustion deposits from inside the engine,  
notably the critical piston-ring-land area, and  
fuel system components. Follow product la-  
beling for use instructions.  
Be sure to take the above steps when op-  
erating the engine after a long period of  
storage. Otherwise engine seizure could  
occur.  
EMU27233  
Filling fuel and engine oil  
EMU27242  
Filling fuel for portable tank  
EWM00060  
WARNING  
Gasoline and its vapors are highly flam-  
mable and explosive. Keep away from  
sparks, cigarettes, flames, or other  
sources of ignition.  
1. Remove the fuel tank cap.  
2. Fill the fuel tank carefully.  
3. Close the cap securely after refueling.  
Wipe up any spilled fuel.  
Fuel tank capacity (if equipped Yamaha  
fuel tank):  
25L  
24  
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Operation  
EMU27311  
Filling oil for electric start models  
EWM00530  
WARNING  
Do not add gasoline into the oil tank. Fire  
or explosion could result.  
This engine uses the Yamaha oil injection  
system, which provides superior lubrication  
by ensuring the proper oil ratio for all operat-  
ing conditions. No fuel premixing is needed.  
Simply pour gasoline into the fuel tank and  
oil into the oil tank. Convenient indicator seg-  
ments indicate the status of the oil supply.  
For details on reading the indicator seg-  
ments, see page 26.  
ZMU03370  
3. Slowly pour the engine oil into the en-  
gine oil tank.  
To fill the engine oil tank, proceed as follows:  
Engine oil tank capacity:  
2.8 L (2.96 US qt) (2.46 Imp.qt)  
2
1. Turn the oil filler access cap on the top  
cowling counterclockwise and open it.  
1
ZMU03371  
1. Oil ller access cap  
2. Oil tank ller cap  
4. After filling, replace the all caps secure-  
ly.  
ZMU03369  
2. Open the oil tank filler cap by pulling the  
tab on the cap.  
25  
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Operation  
EMU27321  
Oil level indicator operation  
The various functions of the oil level system are as follows:  
EMU27360  
Electric start models  
Oil level  
Oil level  
warning  
indicator  
(digital  
warning  
indicator  
(analog  
tachometer/  
bottom  
Engine oil tank  
Remarks  
tachometer)  
cowling)  
Green  
more than 770  
3
No relling necessary.  
cm (0.81 US qt,  
0.68 Imp qt)  
3
Yellow  
from 770 cm  
(0.48 US qt, 0.40  
Imp qt) down to  
Add oil; see page 25.  
3
280 cm (0.30 US  
qt, 0.25 Imp qt)  
Red  
G Buzzer sounds in  
remote control box  
and engine speed is  
limited to about 2000  
r/min to help con-  
serve oil.  
3
280 cm (0.30 US  
qt, 0.25 Imp qt) or  
less  
G Check oil lter for  
clogging.  
EMU27450  
EMU27461  
are flammable and explosive. Refrain  
from smoking, and keep away from  
open flames and sparks while loosen-  
ing the air vent screw.  
Operating engine  
Feeding fuel (portable tank)  
EWM00420  
G This product emits exhaust gases  
which contain carbon monoxide, a col-  
orless, odorless gas which could cause  
brain damage or death when inhaled.  
Symptoms include nausea, dizziness,  
and drowsiness. Keep cockpit and cab-  
in areas well ventilated. Avoid blocking  
exhaust outlets.  
WARNING  
G Before starting the engine, make sure  
that the boat is tightly moored and that  
you can steer clear of any obstructions.  
Be sure there are no swimmers in the  
water near you.  
G When the air vent screw is loosened,  
gasoline vapor will be released. Gaso-  
line is highly flammable, and its vapors  
1. If there is an air vent screw on the fuel  
tank cap, loosen it 2 or 3 turns.  
26  
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Operation  
from the fuel tank.  
4. Squeeze the primer pump with the outlet  
end up until you feel it become firm.  
ZMU02295  
2. If there is a fuel joint on the motor, firmly  
connect the fuel line to the joint. Then  
firmly connect the other end of the fuel  
line to the joint on the fuel tank.  
ZMU02025  
EMU27490  
Starting engine  
EMU27662  
Electric start and remote control models  
1. Place the remote control lever in neutral.  
ZMU03833  
NOTE:  
The start-in-gear protection device prevents  
the engine from starting except when in neu-  
tral.  
2. Attach the engine stop switch lanyard to  
a secure place on your clothing, or your  
arm or leg. Then install the lock plate on  
the other end of the lanyard into the en-  
ZMU02024  
3. If a steering friction adjuster is provided  
on your outboard motor, securely attach  
the fuel line to the fuel line clamp.  
gine stop switch.  
EWM00120  
NOTE:  
WARNING  
During engine operation place the tank hori-  
G Attach the engine stop switch lanyard  
zontally, otherwise fuel cannot be drawn  
27  
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Operation  
to a secure place on your clothing, or  
your arm or leg while operating.  
turn to “ ” (on).  
ECM00191  
CAUTION:  
G Never turn the main switch to “  
(start) while the engine is running.  
G Do not attach the lanyard to clothing  
that could tear loose. Do not route the  
lanyard where it could become entan-  
gled, preventing it from functioning.  
G Avoid accidentally pulling the lanyard  
during normal operation. Loss of en-  
gine power means the loss of most  
steering control. Also, without engine  
power, the boat could slow rapidly. This  
could cause people and objects in the  
boat to be thrown forward.  
G Do not keep the starter motor turning  
for more than 5 seconds. If the starter  
motor is turned continuously for more  
than 5 seconds, the battery will be  
quickly discharged, thus making it im-  
possible to start the engine. The starter  
can also be damaged. If the engine will  
not start after 5 seconds of cranking,  
return the main switch to “ ” (on), wait  
10 seconds, then crank the engine  
again.  
NOTE:  
G When the engine is cold, it needs to be  
warmed up. For further information, see  
page 28.  
G If the engine is warm and fails to start,  
open the throttle slightly and try to start the  
engine again. If the engine still fails to  
start, see page 55.  
3. Turn the main switch to “ ” (on).  
4. Turn the main switch to “  
(start),  
EMU27670  
and hold it for a maximum of 5 seconds.  
Warming up engine  
EMU27702  
Electric start and prime start models  
1. After starting the engine, allow it to idle  
for 3 minutes to warm up. Failure to do  
so will shorten engine life.  
2. Check for a steady flow of water from the  
cooling water pilot hole.  
ECM00511  
CAUTION:  
A continuous flow of water from the cool-  
ing water pilot hole shows that the water  
pump is pumping water through the cool-  
ing passages. If water is not flowing out  
of the hole at all times while the engine is  
5. Immediately after the engine starts, re-  
lease the main switch and allow it to re-  
28  
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Operation  
running, overheating and serious dam-  
age could occur. Stop the engine and  
check whether the cooling water inlet on  
the lower case or the cooling water pilot  
hole is blocked. Consult your Yamaha  
dealer if the problem cannot be located  
and corrected.  
equipped) and move the remote control  
lever quickly and firmly from neutral to  
forward.  
EMU27784  
Reverse (automatic reverse lock and  
power trim and tilt models)  
EWM00190  
ZMU03391  
WARNING  
EMU27740  
When operating in reverse, go slowly. Do  
not open the throttle more than half. Oth-  
erwise the boat could become unstable,  
which could result in loss of control and  
an accident.  
Shifting  
EWM00180  
WARNING  
Before shifting, make sure there are no  
swimmers or obstacles in the water near  
you.  
Tiller control models  
1. Place the throttle grip in the fully closed  
position.  
2. Move the gear shift lever quickly and  
firmly from neutral to reverse.  
Remote control models  
1. Pull up the neutral interlock trigger (if  
equipped) and move the remote control  
lever quickly and firmly from neutral to  
reverse.  
ECM00220  
CAUTION:  
To change the boat direction or shifting  
position from forward to reverse or vice-  
versa, first close the throttle so that the  
engine idles (or runs at low speeds).  
EMU27763  
Forward (tiller handle and remote  
control models)  
Tiller control models  
1. Place the throttle grip in the fully closed  
position.  
2. Move the gear shift lever quickly and  
firmly from neutral to forward.  
Remote control models  
1. Pull up the neutral interlock trigger (if  
29  
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Operation  
ZMU03834  
EMU27820  
3. Tighten the air vent screw on the fuel  
tank cap (if equipped).  
Stopping engine  
Before stopping the engine, first let it cool off  
for a few minutes at idle or low speed. Stop-  
ping the engine immediately after operating  
at high speed is not recommended.  
EMU27844  
Procedure  
1. Push and hold the engine stop button or  
turn the main switch to “  
(off).  
ZMU02301  
4. Remove the key if the boat will be left  
unattended.  
NOTE:  
The engine can also be stopped by pulling  
the lanyard and removing the lock plate from  
the engine stop switch, then turning the main  
switch to “  
(off).  
2. After stopping the engine, disconnect  
the fuel line if there is a fuel joint on the  
outboard motor.  
EMU27861  
Trimming outboard motor  
The trim angle of the outboard motor helps  
determine the position of the bow of the boat  
in the water. Correct trim angle will help im-  
prove performance and fuel economy while  
reducing strain on the engine. Correct trim  
angle depends upon the combination of  
boat, engine, and propeller. Correct trim is  
also affected by variables such as the load in  
30  
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Operation  
the boat, sea conditions, and running speed.  
EWM00740  
clamp bracket.  
G Use caution when trying a trim position  
for the first time. Increase speed gradu-  
ally and watch for any signs of instabil-  
ity or control problems. Improper trim  
angle can cause loss of control.  
G Use the power tilt switch located on the  
bottom engine cowling (if equipped)  
only when the boat is at a complete  
stop with the engine off.  
WARNING  
Excessive trim for the operating condi-  
tions (either trim up or trim down) can  
cause boat instability and can make  
steering the boat more difficult. This in-  
creases the possibility of an accident. If  
the boat begins to feel unstable or is hard  
to steer, slow down and/or readjust the  
trim angle.  
Adjust the outboard motor trim angle using  
the power trim and tilt switch.  
1. Power trim and tilt switch  
UP  
DN  
1
ZMU02543  
1. Trim operating angle  
EMU27881  
ZMU03835  
Adjusting trim angle  
Power trim and tilt models  
To raise the bow (trim-out), press the switch  
EWM00750  
(up).  
To lower the bow (trim-in), press the switch  
(down).  
WARNING  
G Be sure all people are clear of the out-  
board motor when adjusting the tilt an-  
gle, also be careful not to pinch any  
body parts between the drive unit and  
Make test runs with the trim set to different  
angles to find the position that works best for  
31  
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Operation  
your boat and operating conditions.  
NOTE:  
To adjust the trim angle while the boat is  
moving, use the power trim and tilt switch lo-  
cated on the remote control device or tiller  
handle, if equipped.  
EMU27911  
Adjusting boat trim  
When the boat is on plane, a bow-up attitude  
results in less drag, greater stability and effi-  
ciency. This is generally when the keel line of  
the boat is up about 3 to 5 degrees. With the  
bow up, the boat may have a greater tenden-  
cy to steer to one side or the other. Compen-  
sate for this as you steer. The trim tab can  
also be adjusted to help offset this effect.  
When the bow of the boat is down, it is easier  
to accelerate from a standing start onto  
plane.  
Bow Down  
Too much trim-in causes the boat to plow”  
through the water, decreasing fuel economy  
and making it hard to increase speed. Oper-  
ating with excessive trim-in at higher speeds  
also makes the boat unstable. Resistance at  
the bow is greatly increased, heightening the  
danger of bow steeringand making opera-  
tion difficult and dangerous.  
NOTE:  
Bow Up  
Depending on the type of boat, the outboard  
motor trim angle may have little effect on the  
trim of the boat when operating.  
Too much trim-out puts the bow of the boat  
too high in the water. Performance and econ-  
omy are decreased because the hull of the  
boat is pushing the water and there is more  
air drag. Excessive trim-out can also cause  
the propeller to ventilate, which reduces per-  
formance further, and the boat may por-  
poise(hop in the water), which could throw  
the operator and passengers overboard.  
EMU27932  
Tilting up and down  
If the engine will be stopped for some time or  
if the boat is moored in shallows, the out-  
board motor should be tilted up to protect the  
propeller and casing from damage by colli-  
sion with obstructions, and also to reduce  
32  
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Operation  
salt corrosion.  
EWM00220  
2. Disconnect the fuel line from the out-  
board motor or close the fuel cock.  
WARNING  
Be sure all people are clear of the out-  
board motor when tilting up and down,  
also be careful not to pinch any body  
parts between the drive unit and engine  
bracket.  
EWM00250  
WARNING  
Leaking fuel is a fire hazard. If there is a  
fuel joint on the outboard motor, discon-  
nect the fuel line or close the fuel cock if  
the engine will be tilted for more than a  
few minutes. Otherwise fuel may leak.  
ZMU03834  
3. Press the power trim and tilt switch /  
power tilt switch “ ” (up) until the out-  
board motor has tilted up completely.  
ECM00241  
CAUTION:  
G Before tilting the outboard motor, stop  
the engine by following the procedure  
on page 30. Never tilt the outboard mo-  
tor while the engine is running. Severe  
damage from overheating can result.  
G Do not tilt up the engine by pushing the  
tiller handle (if equipped) because this  
could break the handle.  
EMU28005  
Procedure for tilting up  
Power trim and tilt models / power tilt models  
1. Place the remote control lever / the gear  
shift lever in neutral.  
UP  
ZMU03837  
4. Push the tilt support knob into the clamp  
bracket or pull the tilt support lever to-  
ward you to support the engine.  
33  
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Operation  
EMU28052  
Procedure for tilting down  
Power trim and tilt models / power tilt models  
1. Push the power tilt / power trim and tilt  
switch “ ” (up) until the outboard motor  
is supported by the tilt rod and the tilt  
support lever / tilt support knob becomes  
free.  
2. Release the tilt support lever or pull out  
the tilt support knob.  
ZMU02528  
EWM00260  
WARNING  
After tilting the outboard motor, be sure  
to support it with the tilt support knob or  
tilt support lever. Otherwise the outboard  
motor could fall back down suddenly if oil  
in the power trim and tilt unit loses pres-  
sure.  
ZMU02569  
5. Models equipped with trim rods: Once  
the outboard motor is supported with the  
tilt support lever, press the power trim  
and tilt switch “ ” (down) to retract the  
3. Push the power tilt / power trim and tilt  
switch “ ” (down) to lower the outboard  
motor to the desired position.  
trim rods.  
ECM00250  
CAUTION:  
UP  
Be sure to retract the trim rods complete-  
ly during mooring. This protects the rods  
from marine growth and corrosion which  
could damage the power trim and tilt  
mechanism.  
DN  
DN  
ZMU01936  
ZMU02546  
34  
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Operation  
DN  
ZMU03838  
EMU28060  
2. Slightly tilt the outboard motor up to the  
desired position using the power trim / tilt  
switch.  
Cruising in shallow water  
The outboard motor can be tilted up partially  
to allow operation in shallow water.  
EMU28090  
Power trim and tilt models / power tilt  
models  
The outboard motor can be tilted up partially  
to allow operation in shallow water.  
EWM00660  
WARNING  
G Place the gear shift in neutral before  
setting up for shallow water cruising.  
G Return the outboard motor to its normal  
position as soon as the boat is back in  
deeper water.  
ECM00260  
CAUTION:  
UP  
Do not tilt the outboard motor up so that  
the cooling water inlet on the lower unit is  
above the surface of the water when set-  
ting up for and cruising in shallow water.  
Otherwise severe damage from overheat-  
ing can result.  
ZMU03837  
3. To return the outboard motor to the nor-  
mal running position, press the power  
trim / tilt switch and slowly tilt the out-  
EMU28184  
Procedure for power trim and tilt / power  
tilt models  
1. Place the gear shift lever in neutral.  
board motor down.  
EMU28190  
Cruising in other conditions  
Cruising in salt water  
After operating in salt water, wash out the  
35  
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Operation  
cooling water passages with fresh water to  
prevent them from becoming clogged with  
salt deposits.  
NOTE:  
For cooling system flushing instructions, see  
page 38.  
Cruising in turbid water  
Yamaha strongly recommends that you use  
the optional chromium-plated water pump kit  
if you use the outboard motor in turbid (mud-  
dy) water conditions.  
36  
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Maintenance  
EMU28216  
Starting system:  
Specifications  
Electric  
Starting carburetion system:  
Prime start  
Dimension:  
Overall length:  
713 mm (28.1 in)  
Overall width:  
364 mm (14.3 in)  
Overall height L:  
1374 mm (54.1 in)  
Transom height L:  
521 mm (20.5 in)  
Weight (without propeller) L:  
104.0 kg (229 lb)  
Min. cold cranking amps (CCA/SAE):  
380.0 A  
Min. marine cranking amps (MCA/ABYC):  
502.0 A  
Min. reserve capacity (RC/SAE):  
124 minutes  
Alternator output for battery DC:  
6.0 A  
Drive unit:  
Gear positions:  
Forward-neutral-reverse  
Gear ratio:  
2.33 (28/12)  
Performance:  
Full throttle operating range:  
60TR 45005500 r/min  
70TR 50006000 r/min  
Maximum output:  
Trim and tilt system:  
Power trim and tilt  
Propeller mark:  
K
60TR 44.1 kW@5000 r/min (60  
HP@5000 r/min)  
70TR 51.5 kW@5500 r/min (70  
HP@5500 r/min)  
Fuel and oil:  
Idling speed (in neutral):  
800 50 r/min  
Recommended fuel:  
Regular unleaded gasoline  
Engine:  
Min. pump octane:  
86  
Type:  
2-stroke L  
Recommended engine oil:  
YAMALUBE 2-stroke outboard motor  
oil  
Displacement:  
3
849.0 cm (51.81 cu.in)  
Bore × stroke:  
Lubrication:  
72.0 × 69.5 mm (2.83 × 2.74 in)  
Ignition system:  
CDI (micro computer)  
Spark plug (NGK):  
B8HS-10  
Oil injection  
Engine oil tank capacity:  
2.8 L (2.96 US qt) (2.46 Imp.qt)  
Recommended gear oil:  
Hypoid gear oil SAE#90  
Gear oil quantity:  
Spark plug with resistor (NGK):  
BR8HS-10  
3
610.0 cm (20.62 US oz) (21.51  
Spark plug gap:  
Imp.oz)  
0.91.0 mm (0.0350.039 in)  
Control system:  
Tightening torque for engine:  
Spark plug:  
Remote control  
25.0 Nm (18.4 ft-lb) (2.55 kgf-m)  
37  
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Maintenance  
Propeller nut:  
35.0 Nm (25.8 ft-lb) (3.57 kgf-m)  
dealer for further details.  
EMU28222  
Transporting and storing  
outboard motor  
EWM00690  
WARNING  
G Leaking fuel is a fire hazard. When  
transporting and storing the outboard  
motor, close the air vent screw and fuel  
cock to prevent fuel from leaking.  
G USE CARE when transporting fuel tank,  
whether in a boat or car.  
G DO NOT fill fuel container to maximum  
capacity. Gasoline will expand consid-  
erably as it warms up and can build up  
pressure in the fuel container. This can  
cause fuel leakage and a potential fire  
hazard.  
ZMU03122  
EMU28235  
Clamp screw mounting models  
When transporting or storing the outboard  
motor while removed from a boat, keep the  
outboard motor in the attitude shown.  
EWM00700  
WARNING  
Never get under the lower unit while it is  
tilted, even if a motor support bar is used.  
Severe injury could occur if the outboard  
motor accidentally falls.  
ZMU03122  
ECM00660  
NOTE:  
CAUTION:  
Place a towel or something similar under the  
Do not use the tilt support lever or knob  
when trailering the boat. The outboard  
motor could shake loose from the tilt sup-  
port and fall. If the motor cannot be trail-  
ered in the normal running position, use  
an additional support device to secure it  
in the tilt position.  
outboard motor to protect it from damage.  
EMU30272  
Storing outboard motor  
When storing your Yamaha outboard motor  
for prolonged periods of time (2 months or  
longer), several important procedures must  
be performed to prevent excessive damage.  
It is advisable to have your outboard motor  
serviced by an authorized Yamaha dealer  
prior to storage. However, you, the owner,  
with a minimum of tools, can perform the fol-  
The outboard motor should be trailered and  
stored in the normal running position. If there  
is insufficient road clearance in this position,  
then trailer the outboard motor in the tilt po-  
sition using a motor support device such as  
a transom saver bar. Consult your Yamaha  
38  
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Maintenance  
lowing procedures.  
ECM01411  
es.  
ECM00310  
CAUTION:  
CAUTION:  
G Do not place the outboard motor on its  
side before the cooling water has  
drained from it completely, otherwise  
water may enter the cylinder through  
the exhaust port and cause engine trou-  
ble.  
Avoid running the outboard motor at high  
speed while on the flushing attachment,  
otherwise overheating could occur.  
G Store the outboard motor in a dry, well-  
ventilated place, not in direct sunlight.  
EMU28301  
Procedure  
EMU28380  
Flushing with the flushing attachment  
1. Wash the outboard motor body using  
fresh water. For further information, see  
page 41.  
1. Flushing attachment  
2. Fill the fuel tank with fresh fuel and add  
one ounce of Yamaha Fuel Conditioner  
and Stabilizer(Part No. LUB-FUELC-  
12-00) to each gallon of fuel.  
5. Cooling system flushing is essential to  
prevent the cooling system from clog-  
ging up with salt, sand, or dirt. In addi-  
tion, fogging/lubricating of the engine is  
mandatory to prevent excessive engine  
damage due to rust. Perform the flush-  
NOTE:  
The use of Yamaha Fuel Conditioner and  
Stabilizereliminates the need to drain the  
fuel system. Consult your Yamaha dealer or  
other qualified mechanic if the fuel system is  
to be drained instead.  
ing and fogging at the same time.  
EWM00090  
WARNING  
G Do not touch or remove electrical parts  
when starting or during operation.  
G Keep hands, hair, and clothes away  
from the flywheel and other rotating  
parts while the engine is running.  
3. Remove the top cowling and silencer  
cover/cap. Remove the propeller.  
4. Install the flushing attachment over the  
cooling water inlet.  
ECM00300  
CAUTION:  
6. Run the engine at a fast idle for 1015  
minutes in neutral position while supply-  
ing fresh water.  
7. Just prior to turning off the engine, quick-  
ly spray Yamaha Stor-Rite Engine  
Fogging Oil(Part No. LUB-STRRT-12-  
00) alternately into each carburetor/  
each intake manifold. When properly  
Do not run the engine without supplying  
it with cooling water. Either the engine  
water pump will be damaged or the en-  
gine will be damaged from overheating.  
Before starting the engine, be sure to  
supply water to the cooling water passag-  
39  
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Maintenance  
EMU28430  
done, the engine will smoke excessively  
and almost stall.  
Battery care  
EWM00330  
8. Remove the flushing attachment and  
wipe off any excess water.  
9. Install the silencer cover/cap and top  
cowling. Install the propeller.  
WARNING  
Battery electrolytic fluid is dangerous; it  
contains sulfuric acid and therefore is  
poisonous and highly caustic.  
Always follow these preventive mea-  
sures:  
G Avoid bodily contact with electrolytic  
fluid as it can cause severe burns or  
permanent eye injury.  
NOTE:  
A flushing attachment is available from your  
Yamaha dealer.  
EMU28410  
Lubrication (oil injection models)  
1. Grease the spark plug threads and in-  
stall the spark plug(s) and torque to  
proper specification. For information on  
spark plug installation, see page 44.  
2. Fill the oil tanks. This prevents the for-  
mation of condensation. For models with  
a remote oil tank, it may be necessary to  
manually override the control unit to  
completely fill the engine oil tank.  
3. Change the gear oil. For instructions,  
see page 50. Inspect the oil for the pres-  
ence of water which indicates a leaky  
seal. Seal replacement should be per-  
formed by an authorized Yamaha dealer  
prior to use.  
G Wear protective eye gear when han-  
dling or working near batteries.  
Antidote (EXTERNAL):  
G SKIN - Flush with water.  
G EYES - Flush with water for 15 minutes  
and get immediate medical attention.  
Antidote (INTERNAL):  
G Drink large quantities of water or milk  
followed by milk of magnesia, beaten  
egg, or vegetable oil. Get immediate  
medical attention.  
Batteries also generate explosive hydro-  
gen gas; therefore, you should always  
follow these preventive measures:  
G Charge batteries in a well-ventilated ar-  
ea.  
G Keep batteries away from fire, sparks,  
or open flames (for example: welding  
equipment, lighted cigarettes, and so  
on.)  
4. Grease all grease fittings. For further de-  
tails, see page 43.  
EMU28421  
Cleaning and anticorrosion  
measures  
1. Wash down the exterior of the outboard  
motor with fresh water and dry off com-  
pletely.  
2. Spray the outboard motor exterior with  
Yamaha Silicone Protectant(Part No.  
LUB-SILCNE-13-00).  
3. Wax the cowling with a non-abrasive  
wax such as Yamaha Silicone Wax”  
(Part No. ACC-11000-15-02).  
G DO NOT SMOKE when charging or han-  
dling batteries.  
KEEP BATTERIES AND ELECTROLYTIC  
FLUID OUT OF REACH OF CHILDREN.  
Batteries vary among manufacturers. There-  
fore the following procedures may not al-  
ways  
apply.  
Consult  
your  
battery  
manufacturers instructions.  
Procedure  
40  
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Maintenance  
EMU28483  
EWM01070  
1. Disconnect and remove the battery from  
the boat. Always disconnect the black  
negative cable first to prevent the risk of  
shorting.  
Periodic maintenance  
WARNING  
Be sure to turn off the engine when you  
perform maintenance unless otherwise  
specified. If you or the owner is not famil-  
iar with machine servicing, this work  
should be done by your Yamaha dealer or  
other qualified mechanic.  
2. Clean the battery casing and terminals.  
Fill each cell to the upper level with dis-  
tilled water.  
3. Store the battery on a level surface in a  
cool, dry, well-ventilated place out of di-  
rect sunlight.  
4. Once a month, check the specific gravity  
of the electrolyte and recharge as re-  
quired to prolong battery life.  
EMU28450  
Maintenance, replacement, or repair of  
the emission control devices and sys-  
tems may be performed by any marine  
engine repair establishment or individual.  
All warranty repairs, however, including  
those to the emission control system,  
must be performed by an authorized  
Yamaha marine dealership.  
Cleaning the outboard motor  
After use, wash the exterior of the outboard  
motor with fresh water. Flush the cooling  
system with fresh water.  
A service manual is available for purchase  
through your Yamaha dealer for owners who  
have the mechanical skills, tools, and other  
equipment necessary to perform mainte-  
nance not covered by this owners manual.  
EMU28510  
Replacement parts  
If replacement parts are necessary, use only  
genuine Yamaha parts or parts of the same  
type and of equivalent strength and materi-  
als. Any part of inferior quality may malfunc-  
tion, and the resulting loss of control could  
endanger the operator and passengers.  
Yamaha genuine parts and accessories are  
available from your Yamaha dealer.  
ZMU03223  
NOTE:  
For cooling system flushing instructions, see  
page 38.  
EMU28460  
Checking painted surface of motor  
Check the motor for scratches, nicks, or flak-  
ing paint. Areas with damaged paint are  
more likely to corrode. If necessary, clean  
and paint the areas. A touch-up paint is avail-  
able from your Yamaha dealer.  
41  
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Maintenance  
EMU28521  
Maintenance chart  
Frequency of maintenance operations may be adjusted according to the operating condi-  
tions, but the following table gives general guidelines. Refer to the sections in this chapter for  
explanations of each owner-specific action.  
The “ ” symbol indicates the check-ups which you may carry out yourself.  
The “ ” symbol indicates work to be carried out by your Yamaha dealer.  
Initial  
Every  
50 hours  
100  
hours (6  
months)  
200  
hours (1  
year)  
Item  
Actions  
10 hours  
(1 month)  
(3  
months)  
Inspection / replace-  
ment  
Anode(s) (external)  
Inspection / replace-  
ment  
Anode(s) (internal)  
Battery  
Inspection / charging  
Cooling water pas-  
sages  
Cleaning  
Cowling clamp  
Inspection  
Fuel lter (can be dis-  
assembled)  
Inspection / cleaning  
Inspection  
Fuel system  
Fuel tank (Yamaha por-  
table tank)  
Inspection / cleaning  
Gear oil  
Change  
Greasing points  
Greasing  
Idling speed (carbure-  
tor models)  
Inspection / adjustment  
PCV (Pressure Con-  
trol Valve)  
Inspection  
Inspection  
Power trim and tilt unit  
Inspection / replace-  
ment  
Propeller and cotter pin  
Shift link / shift cable  
Thermostat  
Inspection / adjustment  
Inspection  
Throttle link / throttle  
cable / throttle pick-up  
timing  
Inspection / adjustment  
Water pump  
Oil pump  
Inspection  
Inspection / adjustment  
42  
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Maintenance  
Initial  
50 hours  
Every  
100  
200  
hours (1  
year)  
Item  
Actions  
10 hours  
(1 month)  
(3  
hours (6  
months)  
months)  
Oil tank water drain  
Spark plug(s)  
Inspection / cleaning  
Cleaning / adjustment /  
replacement  
NOTE:  
When operating in salt water, turbid or muddy water, the engine should be flushed with clean  
water after each use.  
EMU28931  
Greasing  
Yamaha marine grease (Water resistant grease)  
60D, 70D  
ZMU03125  
43  
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Maintenance  
EMU28951  
Cleaning and adjusting spark plug  
EWM00560  
WARNING  
When removing or installing a spark plug,  
be careful not to damage the insulator. A  
damaged insulator could allow external  
sparks, which could lead to explosion or  
fire.  
The spark plug is an important engine com-  
ponent and is easy to inspect. The condition  
of the spark plug can indicate something  
about the condition of the engine. For exam-  
ple, if the center electrode porcelain is very  
white, this could indicate an intake air leak or  
carburetion problem in that cylinder. Do not  
attempt to diagnose any problems yourself.  
Instead, take the outboard motor to a  
Yamaha dealer. You should periodically re-  
move and inspect the spark plug because  
heat and deposits will cause the spark plug  
to slowly break down and erode. If electrode  
erosion becomes excessive, or if carbon and  
other deposits are excessive, you should re-  
place the spark plug with another of the cor-  
rect type.  
1. Spark plug gap  
2. Spark plug I.D. mark (NGK)  
Spark plug gap:  
0.91.0 mm (0.0350.039 in)  
When fitting the plug, always clean the gas-  
ket surface and use a new gasket. Wipe off  
any dirt from the threads and screw in the  
spark plug to the correct torque.  
Spark plug torque:  
25.0 Nm (18.4 ft-lb) (2.55 kgf-m)  
NOTE:  
If a torque-wrench is not available when you  
are fitting a spark plug, a good estimate of  
the correct torque is 1/4 to 1/2 a turn past fin-  
ger-tight. Have the spark plug adjusted to the  
correct torque as soon as possible with a  
torque-wrench.  
Standard spark plug:  
B8HS-10  
BR8HS-10  
Before fitting the spark plug, measure the  
electrode gap with a wire thickness gauge;  
adjust the gap to specification if necessary.  
EMU28962  
Checking fuel system  
EWM00060  
WARNING  
Gasoline and its vapors are highly flam-  
mable and explosive. Keep away from  
sparks, cigarettes, flames, or other  
44  
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Maintenance  
EMU28980  
sources of ignition.  
Inspecting fuel filter  
EWM00910  
EWM00310  
WARNING  
Leaking fuel can result in fire or explo-  
sion.  
G Check for fuel leakage regularly.  
G If any fuel leakage is found, the fuel  
system must be repaired by a qualified  
mechanic. Improper repairs can make  
the outboard unsafe to operate.  
WARNING  
Gasoline is highly flammable, and its va-  
pors are flammable and explosive.  
G If you have any question about properly  
doing this procedure, consult your  
Yamaha dealer.  
G Do not perform this procedure on a hot  
or running engine. Allow the engine to  
cool.  
Check the fuel lines for leaks, crack, or mal-  
function. If a problem is found, your Yamaha  
dealer or other qualified mechanic should re-  
pair it immediately.  
G There will be fuel in the fuel filter. Keep  
away from sparks, cigarettes, flames or  
other sources of ignition.  
G This procedure will allow some fuel to  
spill. Catch fuel in a rag. Wipe up any  
spilled fuel immediately.  
G The fuel filter must be reassembled  
carefully with the O-ring, filter cup, and  
hoses in place. Improper assembly or  
replacement could result in a fuel leak,  
which could result in a fire or explosion  
hazard.  
EMU29001  
Cleaning fuel filter  
1. Remove the nut holding the fuel filter as-  
sembly if equipped.  
1
ZMU02552  
Checkpoints  
G Fuel system parts leakage  
G Fuel line joint leakage  
G Fuel line cracks or other damage  
G Fuel connector leakage  
ZMU03897  
1. Nut  
2. Unscrew the filter cup, catching any  
45  
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Maintenance  
spilled fuel in a rag.  
parts while the engine is running.  
3. Remove the filter element, and wash it in G 2-hp models: The propeller rotates  
solvent. Allow it to dry. Inspect the filter  
element and O-ring to make sure they  
are in good condition. Replace them if  
necessary. If any water is found in the  
fuel, the Yamaha portable fuel tank or  
other fuel tanks should be checked and  
cleaned.  
whenever the engine is running. Do not  
move the throttle control lever from the  
start position during warm-up. The boat  
could unexpectedly start to move,  
which could result in an accident.  
ECM00490  
CAUTION:  
This procedure must be performed while  
the outboard motor is in the water. A  
flushing attachment or test tank can be  
used.  
2
3
A diagnostic tachometer should be used for  
this procedure. Results may vary depending  
on whether testing is conducted with the  
flushing attachment, in a test tank, or with the  
outboard motor in the water.  
4
1
ZMU02079  
1. Start the engine and allow it to warm up  
fully in neutral until it is running smooth-  
ly.  
1. Filter cup  
2. Filter element  
3. Filter housing  
4. O-ring  
2-hp model: Warm the engine with the  
throttle in the start position or less. If the  
outboard is mounted on a boat, be sure  
the boat is tightly moored.  
4. Reinstall the filter element in the cup.  
Make sure the O-ring is in position in the  
cup. Firmly screw the cup onto the filter  
housing.  
NOTE:  
Correct idling speed inspection is only possi-  
5. Attach the filter assembly to the bracket ble if the engine is fully warmed up. If not  
so that the fuel hoses are attached to the warmed up fully, the idle speed will measure  
filter assembly.  
higher than normal. If you have difficulty ver-  
6. Run the engine and check the filter and ifying the idle speed, or the idle speed re-  
lines for leaks.  
quires adjustment, consult a Yamaha dealer  
or other qualified mechanic.  
EMU29040  
Inspecting idling speed  
EWM00450  
2. Verify whether the idle speed is set to  
specification. For idle speed specifica-  
WARNING  
tions, see page 37.  
G Do not touch or remove electrical parts  
when starting or during operation.  
G Keep hands, hair, and clothes away  
from the flywheel and other rotating  
EMU29061  
Checking water in engine oil tank  
A translucent water drain hose is connected  
from the bottom of the oil tank to the filler  
46  
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Maintenance  
EMU29153  
neck. If water or foreign matter collects in this  
hose, consult a Yamaha dealer.  
Checking power trim and tilt system  
EWM00430  
WARNING  
2
G Never get under the lower unit while it  
is tilted, even when the tilt support lever  
is locked. Severe injury could occur if  
the outboard motor accidentally falls.  
G Make sure no one is under the outboard  
motor before performing this test.  
1
1. Check the power trim and tilt unit for any  
sign of oil leaks.  
ZMU03898  
2. Operate each of the power trim and tilt  
switches on the remote control and en-  
gine bottom cowling (if equipped) to  
check that all switches work.  
3. Tilt the outboard motor up and check  
that the tilt rod and trim rods are extend-  
ed completely.  
1. Drain hose  
2. Filler neck side  
EMU29111  
Checking wiring and connectors  
G Check that each grounding wire is properly  
secured.  
G Check that each connector is engaged se-  
curely.  
ZMU03841  
1. Tilt rod  
2. Trim rods  
EMU29120  
Exhaust leakage  
Start the engine and check that no exhaust  
leaks from the joints between the exhaust  
cover, cylinder head, and body cylinder.  
EMU29130  
4. Use the tilt support lever to lock the mo-  
tor in the up position. Operate the tilt  
down switch briefly so the motor is sup-  
ported by the tilt support lever.  
Water leakage  
Start the engine and check that no water  
leaks from the joints between the exhaust  
cover, cylinder head, and body cylinder.  
47  
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Maintenance  
gine accidentally starts when you are  
near the propeller.  
G Before inspecting, removing, or install-  
ing the propeller, remove the spark  
plug caps from the spark plugs. Also,  
place the shift control in neutral, turn  
the main switch to “  
(off) and re-  
move the key, and remove the lanyard  
from the engine stop switch. Turn off  
the battery cut-off switch if your boat  
has one.  
1. Tilt support lever  
G Do not use your hand to hold the pro-  
peller when loosening or tightening the  
propeller nut. Put a wood block be-  
tween the anti-cavitation plate and the  
propeller to prevent the propeller from  
turning.  
5. Check that the tilt rod and trim rods are  
free of corrosion or other flaws.  
6. Activate the tilt-down switch until the trim  
rods have retracted completely into the  
cylinders.  
7. Activate the trim-up switch until the tilt  
rod is fully extended. Unlock the tilt sup-  
port lever.  
ZMU01896  
8. Tilt the outboard motor down. Check  
that the tilt rod and trim rods operate  
smoothly.  
NOTE:  
Consult your Yamaha dealer if any operation  
is abnormal.  
ZMU01897  
EMU29171  
Checking propeller  
Checkpoints  
EWM00321  
G Check each of the propeller blades for  
wear, erosion from cavitation or ventila-  
WARNING  
You could be seriously injured if the en-  
48  
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Maintenance  
tion, or other damage.  
G Check the propeller shaft for damage.  
G Check the splines / shear pin for wear or  
damage.  
G Check for fish line tangled around the pro-  
peller shaft.  
1. Cotter pin  
2. Propeller nut  
3. Washer  
4. Spacer  
5. Propeller  
6. Thrust washer  
G Check the propeller shaft oil seal for dam-  
age.  
1
NOTE:  
3
If the shear pin equipped: it is designed to  
break if the propeller hits a hard underwater  
obstacle to help protect the propeller and  
drive mechanism. The propeller will then  
spin freely on the shaft. If this happens, the  
shear pin must be replaced.  
6
2
4
5
ZMU03842  
EMU29193  
Removing the propeller  
1. Straighten the cotter pin and pull it out  
using a pair of pliers.  
1. Cotter pin  
2. Propeller nut  
3. Washer  
2. Remove the propeller nut, washer, and  
spacer (if equipped).  
4. Spacer  
5. Propeller  
6. Thrust washer  
3. Remove the propeller and thrust wash-  
er.  
EMU29230  
Installing the propeller  
ECM00340  
CAUTION:  
G Be sure to install the thrust washer be-  
fore installing the propeller, otherwise  
49  
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Maintenance  
the lower case and propeller boss  
could be damaged.  
G Be sure to use a new cotter pin and  
bend the ends over securely. Otherwise  
the propeller could come off during op-  
eration and be lost.  
the outboard motor falls on you.  
G Never get under the lower unit while it  
is tilted, even when the tilt support lever  
or knob is locked. Severe injury could  
occur if the outboard motor accidental-  
ly falls.  
1. Apply Yamaha marine grease or a cor- 1. Tilt the outboard motor so that the gear  
rosion resistant grease to the propeller  
shaft.  
oil drain screw is at the lowest point pos-  
sible.  
2. Install the spacer(if equipped), thrust 2. Place a suitable container under the  
washer, and propeller on the propeller  
shaft.  
gear case.  
3. Remove the gear oil drain screw.  
3. Install the spacer (if equipped) and the  
washer. Tighten the propeller nut to the  
specified torque.  
4. Align the propeller nut with the propeller  
shaft hole. Insert a new cotter pin in the  
hole and bend the cotter pin ends.  
2
1
ZMU03133  
1. Gear oil drain screw  
2. Oil level plug  
NOTE:  
If the magnetic gear oil drain screw  
equipped: remove all metal particles from  
the screw before installing it.  
NOTE:  
If the propeller nut does not align with the  
propeller shaft hole after tightening to the  
specified torque, tighten the nut further to  
align it with the hole.  
4. Remove the oil level plug to allow the oil  
to drain completely.  
ECM00710  
CAUTION:  
EMU29280  
Inspect the used oil after it has been  
drained. If the oil is milky, water is getting  
into the gear case which can cause gear  
damage. Consult a Yamaha dealer for re-  
pair of the lower unit seals.  
Changing gear oil  
EWM00800  
WARNING  
G Be sure the outboard motor is securely  
fastened to the transom or a stable  
stand. You could be severely injured if  
50  
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Maintenance  
when cleaning the fuel tank.  
NOTE:  
G Remove the fuel tank from the boat be-  
fore cleaning it. Work only outdoors in  
an area with good ventilation.  
G Wipe up any spilled fuel immediately.  
G Reassemble the fuel tank carefully. Im-  
proper assembly can result in a fuel  
leak, which could result in a fire or ex-  
plosion hazard.  
For disposal of used oil consult your Yamaha  
dealer.  
5. With the outboard motor in a vertical po-  
sition, and using a flexible or pressur-  
ized filling device, inject the gear oil into  
the gear oil drain screw hole.  
Recommended gear oil:  
Hypoid gear oil SAE#90  
Gear oil quantity:  
G Dispose of old gasoline according to lo-  
cal regulations.  
3
610.0 cm (20.62 US oz) (21.51  
1. Empty the fuel tank into an approved  
container.  
Imp.oz)  
2. Pour a small amount of suitable solvent  
into the tank. Install the cap and shake  
the tank. Drain the solvent completely.  
3. Remove the screws holding the fuel joint  
assembly. Pull the assembly out of the  
tank.  
ZMU03132  
6. When the oil begins to flow out of the oil  
level plug hole, insert and tighten the oil  
level plug.  
7. Insert and tighten the gear oil drain  
screw.  
EMU29302  
ZMU03232  
4. Clean the filter (located on the end of the  
suction pipe) in a suitable cleaning sol-  
vent. Allow the filter to dry.  
5. Replace the gasket with a new one. Re-  
install the fuel joint assembly and tighten  
Cleaning fuel tank  
EWM00920  
WARNING  
Gasoline is highly flammable, and its va-  
pors are flammable and explosive.  
G If you have any question about properly  
doing this procedure, consult your  
Yamaha dealer.  
the screws firmly.  
EMU29312  
Inspecting and replacing anode(s)  
Yamaha outboard motors are protected from  
corrosion by sacrificial anodes. Inspect the  
external anodes periodically. Remove scales  
from the surfaces of the anodes. Consult a  
G Keep away from sparks, cigarettes,  
flames, or other sources of ignition  
51  
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Maintenance  
Yamaha dealer for replacement of external poisonous and highly caustic.  
anodes.  
Always follow these preventive mea-  
sures:  
G Avoid bodily contact with electrolytic  
fluid as it can cause severe burns or  
permanent eye injury.  
ECM00720  
CAUTION:  
Do not paint anodes, as this would render  
them ineffective.  
G Wear protective eye gear when han-  
dling or working near batteries.  
Antidote (EXTERNAL):  
NOTE:  
Inspect ground leads attached to external  
anodes on equipped models. Consult a  
Yamaha dealer for inspection and replace-  
ment of internal anodes attached to the pow-  
er unit.  
G SKIN - Flush with water.  
G EYES - Flush with water for 15 minutes  
and get immediate medical attention.  
Antidote (INTERNAL):  
G Drink large quantities of water or milk  
followed by milk of magnesia, beaten  
egg, or vegetable oil. Get immediate  
medical attention.  
Batteries also generate explosive hydro-  
gen gas; therefore, you should always  
follow these preventive measures:  
G Charge batteries in a well-ventilated ar-  
ea.  
G Keep batteries away from fire, sparks,  
or open flames (for example: welding  
equipment, lighted cigarettes, and so  
on.)  
ZMU01901  
G DO NOT SMOKE when charging or han-  
dling batteries.  
KEEP BATTERIES AND ELECTROLYTIC  
FLUID OUT OF REACH OF CHILDREN.  
ECM00360  
CAUTION:  
ZMU02559  
G A poorly maintained battery will quickly  
deteriorate.  
G Ordinary tap water contains minerals  
harmful to a battery, and should not be  
used for topping up.  
EMU29320  
Checking battery (for electric start  
models)  
EWM00330  
WARNING  
Battery electrolytic fluid is dangerous; it  
contains sulfuric acid and therefore is  
1. Check the electrolyte level at least once  
a month. Fill to the manufacturers rec-  
ommended level when necessary. Top  
52  
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Maintenance  
up only with distilled water (or pure de-  
ing on the battery.  
ionized water suitable to use in batter- G Reversal of the battery cables will dam-  
ies).  
age the electrical parts.  
G Connect the red battery cable first  
when installing the battery and discon-  
nect the black battery cable first when  
removing it. Otherwise, the electrical  
parts can be damaged.  
G The electrical contacts of the battery  
and cables must be clean and properly  
connected, or the battery will not start  
the engine.  
Connect the red battery cable to the POSI-  
TIVE (+) terminal first. Then connect the  
black battery cable to the NEGATIVE (-) ter-  
minal.  
2. Always keep the battery in a good state  
of charge. Installing a voltmeter will help  
you monitor your battery. If you will not  
use the boat for a month or more, re-  
move the battery from the boat and store  
it in a cool, dark place. Completely re-  
charge the battery before using it.  
3. If the battery will be stored for longer  
than a month, check the specific gravity  
of the fluid at least once a month and re-  
charge the battery when it is low.  
NOTE:  
Consult a Yamaha dealer when charging or  
re-charging batteries.  
1. Red cable  
2. Black cable  
3. Battery  
EMU29331  
Connecting the battery  
EWM00570  
EMU29370  
WARNING  
Disconnecting the battery  
Disconnect the BLACK cable from the NEG-  
ATIVE (-) terminal first. Then disconnect the  
RED cable from the POSITIVE (+) terminal.  
EMU29390  
Mount the battery holder securely in a  
dry, well-ventilated, vibration-free loca-  
tion in the boat. Install a fully charged bat-  
tery in the holder.  
ECM01121  
Checking top cowling  
Check the fitting of the top cowling by push-  
CAUTION:  
G Make sure the main switch (on applica- ing it with both hands. If it is loose have it re-  
ble models) is “ ” (off) before work- paired by your Yamaha dealer.  
53  
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Maintenance  
ZMU04678  
EMU29400  
Coating the boat bottom  
A clean hull improves boat performance. The  
boat bottom should be kept as clean of ma-  
rine growth as possible. If necessary, the  
boat bottom can be coated with an anti-foul-  
ing paint approved for your area to inhibit  
marine growth.  
Do not use anti-fouling paint which includes  
copper or graphite. These paints can cause  
more rapid engine corrosion.  
ZMU01943  
54  
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Trouble Recovery  
EMU29422  
A. Fill tank with clean, fresh fuel.  
Troubleshooting  
A problem in the fuel, compression, or igni-  
tion systems can cause poor starting, loss of  
power, or other problems. This section de-  
scribes basic checks and possible remedies,  
and covers all Yamaha outboard motors.  
Therefore some items may not apply to your  
model.  
Q. Is fuel filter clogged?  
A. Clean or replace filter.  
Q. Is starting procedure incorrect?  
A. See page 27.  
Q. Has fuel pump malfunctioned?  
If your outboard motor requires repair, bring  
it to your Yamaha dealer.  
A. Have serviced by a Yamaha dealer.  
If the engine trouble warning indicator is  
flashing, consult your Yamaha dealer.  
Q. Are spark plug(s) fouled or of incorrect  
type?  
A. Inspect spark plug(s). Clean or replace  
with recommended type.  
Starter will not operate.  
Q. Is battery capacity weak or low?  
A. Check battery condition. Use battery of  
recommended capacity.  
Q. Are spark plug cap(s) fitted incorrectly?  
A. Check and re-fit cap(s).  
Q. Are battery connections loose or corrod-  
ed?  
Q. Is ignition wiring damaged or poorly con-  
nected?  
A. Tighten battery cables and clean battery  
terminals.  
A. Check wires for wear or breaks. Tighten  
all loose connections. Replace worn or bro-  
ken wires.  
Q. Is fuse for electric start relay or electric cir-  
cuit blown?  
Q. Are ignition parts faulty?  
A. Check for cause of electric overload and  
repair. Replace fuse with one of correct am-  
perage.  
A. Have serviced by a Yamaha dealer.  
Q. Is engine stop switch lanyard not at-  
tached?  
Q. Are starter components faulty?  
A. Attach lanyard.  
A. Have serviced by a Yamaha dealer.  
Q. Are engine inner parts damaged?  
A. Have serviced by a Yamaha dealer.  
Q. Is shift lever in gear?  
A. Shift to neutral.  
Engine idles irregularly or stalls.  
Q. Are spark plug(s) fouled or of incorrect  
type?  
Engine will not start (starter operates).  
Q. Is fuel tank empty?  
A. Fill tank with clean, fresh fuel.  
A. Inspect spark plug(s). Clean or replace  
with recommended type.  
Q. Is fuel contaminated or stale?  
55  
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Trouble Recovery  
Q. Is fuel system obstructed?  
A. Return to home position.  
A. Check for pinched or kinked fuel line or  
other obstructions in fuel system.  
Q. Is motor angle too high?  
A. Return to normal operating position.  
Q. Is fuel contaminated or stale?  
A. Fill tank with clean, fresh fuel.  
Q. Is carburetor clogged?  
A. Have serviced by a Yamaha dealer.  
Q. Is fuel filter clogged?  
A. Clean or replace filter.  
Q. Is fuel joint connection incorrect?  
A. Connect correctly.  
Q. Have ignition parts failed?  
A. Have serviced by a Yamaha dealer.  
Q. Is throttle valve adjustment incorrect?  
A. Have serviced by a Yamaha dealer.  
Q. Has warning system activated?  
A. Find and correct cause of warning.  
Q. Is battery cable disconnected?  
A. Connect securely.  
Q. Is spark plug gap incorrect?  
A. Inspect and adjust as specified.  
Warning buzzer sounds or indicator  
lights.  
Q. Is ignition wiring damaged or poorly con- Q. Is cooling system clogged?  
nected?  
A. Check water intake for restriction.  
A. Check wires for wear or breaks. Tighten  
all loose connections. Replace worn or bro- Q. Is engine oil level low?  
ken wires.  
A. Fill oil tank with specified engine oil.  
Q. Is specified engine oil not being used?  
A. Check and replace oil as specified.  
Q. Is heat range of spark plug incorrect?  
A. Inspect spark plug and replace it with rec-  
ommended type.  
Q. Is thermostat faulty or clogged?  
A. Have serviced by a Yamaha dealer.  
Q. Is specified engine oil not being used?  
A. Check and replace oil with specified type.  
Q. Are carburetor adjustments incorrect?  
A. Have serviced by a Yamaha dealer.  
Q. Is engine oil contaminated or deteriorat-  
ed?  
Q. Is fuel pump damaged?  
A. Replace oil with fresh, specified type.  
A. Have serviced by a Yamaha dealer.  
Q. Is oil filter clogged?  
Q. Is air vent screw on fuel tank closed?  
A. Open air vent screw.  
A. Have serviced by a Yamaha dealer.  
Q. Has oil feed/injection pump malfunc-  
tioned?  
Q. Is choke knob pulled out?  
56  
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Trouble Recovery  
A. Have serviced by a Yamaha dealer.  
Q. Are weeds or other foreign matter tangled  
on gear housing?  
Q. Is load on boat improperly distributed?  
A. Remove foreign matter and clean lower  
A. Distribute load to place boat on an even unit.  
plane.  
Q. Is fuel system obstructed?  
Q. Is water pump or thermostat faulty?  
A. Have serviced by a Yamaha dealer.  
A. Check for pinched or kinked fuel line or  
other obstructions in fuel system.  
Q. Is there excess water in fuel filter cup?  
A. Drain filter cup.  
Q. Is fuel filter clogged?  
A. Clean or replace filter.  
Engine power loss.  
Q. Is propeller damaged?  
Q. Is fuel contaminated or stale?  
A. Fill tank with clean, fresh fuel.  
A. Have propeller repaired or replaced.  
Q. Is spark plug gap incorrect?  
Q. Is propeller pitch or diameter incorrect?  
A. Install correct propeller to operate out-  
A. Inspect and adjust as specified.  
board at its recommended speed (r/min) Q. Is ignition wiring damaged or poorly con-  
range.  
nected?  
A. Check wires for wear or breaks. Tighten  
all loose connections. Replace worn or bro-  
Q. Is trim angle incorrect?  
A. Adjust trim angle to achieve most efficient ken wires.  
operation.  
Q. Have ignition parts failed?  
Q. Is motor mounted at incorrect height on A. Have serviced by a Yamaha dealer.  
transom?  
A. Have motor adjusted to proper transom Q. Is specified engine oil not being used?  
height.  
A. Check and replace oil with specified type.  
Q. Has warning system activated?  
A. Find and correct cause of warning.  
Q. Is thermostat faulty or clogged?  
A. Have serviced by a Yamaha dealer.  
Q. Is boat bottom fouled with marine growth? Q. Is air vent screw closed?  
A. Clean boat bottom. A. Open the air vent screw.  
Q. Are spark plug(s) fouled or of incorrect Q. Is fuel pump damaged?  
type?  
A. Have serviced by a Yamaha dealer.  
A. Inspect spark plug(s). Clean or replace  
with recommended type.  
Q. Is fuel joint connection incorrect?  
A. Connect correctly.  
57  
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Trouble Recovery  
board motor unsafe to operate.  
Q. Is heat range of spark plug incorrect?  
A. Inspect spark plug and replace it with rec-  
ommended type.  
If the outboard motor hits an object in the wa-  
ter, follow the procedure below.  
Q. Is high pressure fuel pump drive belt bro-  
ken?  
A. Have serviced by a Yamaha dealer.  
Q. Is engine not responding properly to shift  
lever position?  
A. Have serviced by a Yamaha dealer.  
Engine vibrates excessively.  
Q. Is propeller damaged?  
A. Have propeller repaired or replaced.  
1. Stop the engine immediately.  
2. Inspect the control system and all com-  
ponents for damage. Also inspect the  
boat for damage.  
3. Whether damage is found or not, return  
to the nearest harbor slowly and careful-  
ly.  
Q. Is propeller shaft damaged?  
A. Have serviced by a Yamaha dealer.  
Q. Are weeds or other foreign matter tangled  
on propeller?  
A. Remove and clean propeller.  
4. Have a Yamaha dealer inspect the out-  
board motor before operating it again.  
EMU29462  
Replacing fuse  
If the fuse has blown on an electric start  
model, open the fuse holder and replace the  
Q. Is motor mounting bolt loose?  
A. Tighten bolt.  
fuse with a new one of the proper amperage.  
Q. Is steering pivot loose or damaged?  
A. Tighten or have serviced by a Yamaha  
dealer.  
EWM00630  
WARNING  
Be sure to use the specified fuse. An in-  
correct fuse or a piece of wire could allow  
excessive current flow. This could cause  
electric system damage and a fire hazard.  
EMU29432  
Temporary action in  
emergency  
EMU29440  
Impact damage  
EWM00870  
WARNING  
The outboard motor can be seriously  
damaged by a collision while operating or  
trailering. Damage could make the out-  
58  
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Trouble Recovery  
EMU29531  
Starter will not operate  
If the starter mechanism does not operate  
(the engine cannot be cranked with the start-  
er), the engine can be started with an emer-  
gency starter rope.  
EWM01020  
1
WARNING  
2
G Use this procedure only in an emergen-  
cy and only to return to port for repairs.  
G When the emergency starter rope is  
used to start the engine, the start-in-  
gear protection device does not oper-  
ate. Make sure the remote control lever  
is in neutral. Otherwise the boat could  
unexpectedly start to move, which  
could result in an accident.  
G Attach the engine stop switch lanyard  
to a secure place on your clothing, or  
your arm or leg while operating.  
G Do not attach the lanyard to clothing  
that could tear loose. Do not route the  
cord where it could become entangled,  
preventing it from functioning.  
G Avoid accidentally pulling the lanyard  
during normal operation. Loss of en-  
gine power means the loss of most  
steering control. Also, without engine  
power, the boat could slow rapidly. This  
could cause people and objects in the  
boat to be thrown forward.  
G Be sure no one is standing behind you  
when pulling the starter rope. It could  
whip behind you and injure someone.  
G An unguarded, rotating flywheel is very  
dangerous. Keep loose clothing and  
other objects away when starting the  
engine. Use the emergency starter rope  
only as instructed. Do not touch the fly-  
wheel or other moving parts when the  
engine is running. Do not install the  
ZMU02561  
1. Fuse holder  
2. Fuse (20 A)  
NOTE:  
Consult your Yamaha dealer if the new fuse  
immediately blows again.  
EMU29510  
Power trim and tilt will not operate  
If the engine cannot be tilted up or down with  
the power trim and tilt/ the power tilt because  
of a discharged battery or a failure with the  
power trim and tilt unit/the power tilt, the en-  
gine can be tilted manually.  
1. Loosen the manual valve screw by turn-  
ing it clockwise until it stops.  
1
ZMU02562  
1. Manual valve screw  
2. Put the engine in the desired position,  
then tighten the manual valve screw by  
turning it counterclockwise.  
59  
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Trouble Recovery  
starter mechanism or top cowling after  
the engine is running.  
ON  
OFF  
G Do not touch the ignition coil, spark  
plug wire, spark plug cap, or other elec-  
trical components when starting or op-  
erating the motor. You could get an  
electrical shock.  
EMU29573  
Emergency starting engine  
1. Remove the top cowling.  
2. Disconnect the start-in-gear protection  
cable from the starter, if equipped.  
3. Remove the starter/flywheel cover after  
removing the bolt(s).  
ZMU03541  
5. Insert the knotted end of the emergency  
starter rope into the notch in the flywheel  
rotor and wind the rope several turns  
around the flywheel clockwise.  
6. Pull the rope slowly until resistance is  
felt.  
7. Give a strong pull straight out to crank  
and start the engine. Repeat if neces-  
sary.  
ZMU02609  
4. Prepare the engine for starting. For fur-  
ther information, see page 27. Be sure  
the engine is in neutral and that the en-  
gine stop switch lanyard lock plate is at-  
tached to the engine stop switch. The  
main switch must be “ ” (on), if  
equipped.  
ZMU02614  
NOTE:  
When the engine does not start with this pro-  
cedure, see page 60.  
EMU29670  
Engine fails to operate  
EMU29691  
Ignition system malfunction  
If the battery voltage is low or in the unlikely  
event of an ignition system malfunction, the  
engine speed may become erratic or the en-  
gine may stop. In such a situation, follow the  
60  
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Trouble Recovery  
procedure below.  
flywheel or other moving parts when the  
1. Remove the CDI unit cover or electrical engine is running.  
cover, if equipped.  
2. Disconnect the yellow cord (emergency  
circuit) of the CDI unit to return to port.  
EWM00350  
1. Adjust the trim angle so that the drive  
shaft is at right angles to the water sur-  
face or is trimmed in.  
2. On models equipped with an emergency  
starter valve, open it. The valve is locat-  
ed behind the silencer cover on the front  
of the engine.  
WARNING  
When the yellow cord is disconnected,  
the idle and low speeds are slightly high-  
er than normal. Use care when starting off  
or stopping.  
ECM00380  
CAUTION:  
Follow this procedure only in an emer-  
gency and just long enough to return to  
port for repairs.  
OPEN  
CLOSE  
ZMU03844  
1
3. Squeeze the primer pump two or three  
times to feed fuel.  
1
2
2
ZMU03843  
1. CDI unit  
2. Emergency connector  
EMU29704  
ZMU03142  
Cold engine fails to start  
If the engine fails to start when it is cold, use  
the following procedure.  
EWM00410  
4. Open the throttle slightly without shifting  
using the throttle grip, neutral throttle le-  
ver or free accelerator. It is necessary to  
change the throttle opening slightly de-  
pending on the engine temperature. Af-  
ter the engine starts, return the throttle to  
its original position.  
WARNING  
When starting or operating the engine, do  
not touch the ignition coil, spark plug  
wire, spark plug cap, or other electrical  
parts carrying high voltage. Keep loose  
clothing and other objects away from the  
engine when starting it. Do not touch the  
61  
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Trouble Recovery  
ON  
N
START  
ZMU03845  
ZMU03922  
5. Turn the main switch to “ ” (on).  
7. After the engine starts, close the emer-  
gency starter valve (if used), then return  
the throttle to its original position.  
ON  
OFF  
OPEN  
ZMU03541  
CLOSE  
6. Turn the main switch to “  
ECM00191  
(start).  
ZMU03145  
CAUTION:  
G Never turn the main switch to “  
NOTE:  
When the starter mechanism malfunctions,  
(start) while the engine is running.  
see page 59.  
G Do not keep the starter motor turning  
for more than 5 seconds. If the starter  
motor is turned continuously for more  
than 5 seconds, the battery will be  
quickly discharged, thus making it im-  
possible to start the engine. The starter  
can also be damaged. If the engine will  
not start after 5 seconds of cranking,  
return the main switch to “ ” (on), wait  
10 seconds, then crank the engine  
again.  
EMU29760  
Treatment of submerged motor  
If the outboard motor is submerged, immedi-  
ately take it to a Yamaha dealer. Otherwise  
some corrosion may begin almost immedi-  
ately.  
If you cannot immediately take the outboard  
motor to a Yamaha dealer, follow the proce-  
dure below in order to minimize engine dam-  
age.  
EMU29771  
Procedure  
1. Thoroughly wash away mud, salt, sea-  
weed, and so on, with fresh water.  
62  
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Trouble Recovery  
dealer as soon as possible.  
ECM00400  
CAUTION:  
Do not attempt to run the outboard motor  
until it has been completely inspected.  
ZMU01909  
2. Remove the spark plugs and face the  
spark plug holes downward to allow any  
water, mud, or contaminants to drain.  
ZMU01910  
3. Drain the fuel from the carburetor, fuel  
filter, and fuel line.  
4. Feed fogging oil or engine oil through  
the carburetor(s) and spark plug holes  
while cranking with the manual starter or  
emergency starter rope.  
ZMU01911  
5. Take the outboard motor to a Yamaha  
63  
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Consumer information  
EMU29811  
Important warranty information for U.S.A. and Canada  
64  
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Consumer information  
65  
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Consumer information  
EMU29820  
YAMAHA MOTOR CORPORATION, U.S.A.  
OUTBOARD MOTOR TWO YEAR LIMITED WARRANTY  
66  
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Consumer information  
67  
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Consumer information  
68  
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Consumer information  
EMU29840  
IMPORTANT WARRANTY INFORMATION IF YOU USE YOUR  
YAMAHA OUTSIDE U.S.A. OR CANADA  
69  
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Printed in Japan  
March 2004-–0.5 × 1 !  
Printed on recycled paper  
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OUTBOARD MOTOR WARRANTY REGISTRATION  
ENREGISTREMENT DE LA GARANTIE DU MOTEUR HORS-BORD  
Please complete and mail this card. This information is necessary to accurately register your unit for warranty.  
Veuillez signer ci-dessous pour attester que le montage et l’inspection ont été faits dans le respect des directives d’inspection et  
que la marche à suivre pour la garantie et l’entretien a été expliquée à l’acheteur au détail.  
(For Dealer Use Only)  
OUTBOARD MOTOR MODEL AND SERIAL NUMBER (From I.D. label on clamp bracket)  
(A l’usage du concessionnaire)  
MODÉLE ET NO. DE SÉRIE DU MOTEUR HORS-BORD (sur l’étiquette d’identification de la presse de fixation)  
YAMAHA DEALER NUMBER  
NO. DU CONCESSIONNAIRE  
YAMAHA  
DEALER NAME  
NOM DU  
CONCESSIONNAIRE  
YAMAHA MOTOR CO., LTD.  
MADE IN JAPAN  
PAYS D'ORIGINE JAPON  
USAGE  
(Check One)  
PLEASURE  
LOISIR  
DATE SOLD  
DATE DE  
LIVRAISON  
COMMERCIAL  
COMMERCIAL  
UTILISATION  
(En cocher un.)  
MONTH  
DAY  
YEAR  
MOIS  
JOUR  
ANNÉE  
OWNER’S NAME  
NOM DU  
PROPRIÉTAIRE  
FIRST  
PRÉNOM  
LAST  
NOM DE FAMILLE  
ADDRESS  
ADRESSE  
STREET  
RUE  
CITY  
VILLE  
STATE/PROVINCE  
PROVINCE  
ZIP  
CODE POSTAL  
PHONE NUMBER (  
)
NUMÉRO DE TÉLÉPHONE  
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PLACE  
POSTAGE  
HERE  
ATTN: WARRANTY DEPARTMENT  
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