Briggs Stratton Lawn Mower 280000 User Manual

Operating & Maintenance  
Instructions  
Model Series  
Covered in  
This Manual  
210000  
280000  
310000  
Model  
Type  
Code  
Month Day  
Year  
Note: General Model Series numbers noted above are inclusive of the specific model  
number found on your engine. To get replacement parts or technical assistance in the  
future, write your engine Model, Type, Code and date of purchase here.  
TABLE OF CONTENTS  
WARNING  
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5  
Engine Information . . . . . . . . . . . . . . . . . . . . . . . . 6  
Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7  
Fuel and Starting Information . . . . . . . . . . . . . . . 8  
Starting and Stopping . . . . . . . . . . . . . . . . . . . 9-10  
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . 11-13  
Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14  
Parts and Service & Storage . . . . . . . . . . . . 15-16  
Warranty Information . . . . . . . . . . . . . . . . . . . . . 17  
Briggs & Stratton does not approve or authorize the use of  
these engines on 3-wheel All Terrain Vehicles (ATVs), motor  
bikes, aircraft products or vehicles intended for use in  
competitive events. Use of these engines in such applications  
could result in property damage, serious injury (including  
paralysis), or even death.  
Need assistance? Go to www.briggsandstratton.com  
for detailed information regarding  
Briggs & Stratton engines.  
Or call, 1-800-233-3723, (U.S.A. and Canada)  
to hear a menu of pre-recorded messages  
offering engine maintenance information.  
PRINTED IN U.S.A.  
Copyright 2003 by Briggs & Stratton Corporation  
FORM NO. 275038-8/03  
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275038  
BEFORE OPERATING ENGINE  
Read entire Operating & Maintenance Instructions AND  
the instructions for the equipment this engine powers.*  
Failure to follow instructions could result in serious injury  
or death.  
THE OPERATING & MAINTENANCE INSTRUCTIONS  
CONTAIN SAFETY INFORMATION TO  
Make you aware of hazards associated with engines  
Inform you of the risk of injury associated with those hazards, and  
Tell you how to avoid or reduce the risk of injury.  
The safety alert symbol  
information about hazards that can result in personal injury.  
( )  
is used to identify safety  
HAZARD SYMBOLS AND MEANINGS  
A signal word (DANGER, WARNING, or CAUTION) is  
used with the alert symbol to indicate the likelihood and the  
potential severity of injury. In addition, a hazard symbol  
may be used to represent the type of hazard.  
Fire  
Explosion  
Moving Parts  
DANGER indicates a hazard which, if not  
avoided, will result in death or serious injury.  
Toxic Fumes  
Hot Surface  
Kickback  
Shock  
WARNING indicates a hazard which, if not  
avoided, could result in death or serious injury.  
CAUTION indicates a hazard which, if not  
avoided, might result in minor or moderate  
injury.  
THE INTERNATIONAL SYMBOLS USED  
ON THE ENGINE OR  
CAUTION, when used without the alert symbol,  
indicates a situation that could result in damage  
to the engine.  
IN THIS MANUAL INCLUDE:  
WARNING  
On Off  
Fuel  
Read Owner’s  
Manual  
Safety Alert  
The engine exhaust from this prod-  
uct contains chemicals known to the  
State of California to cause cancer,  
birth defects, or other reproductive  
harm.  
Oil  
Choke  
Stop Fuel Shutoff  
*
Briggs & Stratton does not necessarily know what equipment this engine will power. For that reason, you should carefully read  
and understand the operating instructions for the equipment on which your engine is placed.  
3
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SAFETY  
WARNING  
WARNING  
Starting engine creates sparking.  
Gasoline and its vapors are extremely  
flammable and explosive.  
Sparking can ignite nearby flammable  
gases.  
Fire or explosion can cause severe burns  
or death.  
Explosion and fire could result.  
WHEN ADDING FUEL  
Turn engine OFF and let engine cool at least 2  
minutes before removing gas cap.  
If there is natural or LP gas leakage in area, do not  
start engine.  
Do not use pressurized starting fluids because  
vapors are flammable.  
Fill fuel tank outdoors or in well-ventilated area.  
Do not overfill fuel tank. Fill tank to approximately  
1-1/2 inches below top of neck to allow for fuel  
expansion.  
Keep gasoline away from sparks, open flames,  
pilot lights, heat, and other ignition sources.  
Check fuel lines, tank, cap, and fittings frequently  
for cracks or leaks. Replace if necessary.  
WARNING  
Rapid retraction of starter cord (kickback) will  
pull hand and arm toward engine faster than  
you can let go.  
WHEN STARTING ENGINE  
Make sure spark plug, muffler, fuel cap and air  
cleaner are in place.  
Broken bones, fractures, bruises or sprains  
could result.  
Do not crank engine with spark plug removed.  
If fuel spills, wait until it evaporates before starting  
engine.  
When starting engine, pull cord slowly until  
resistance is felt, then pull rapidly.  
If engine floods, set choke to OPEN/RUN position,  
place throttle in FAST and crank until engine starts.  
Remove all external equipment/engine loads  
before starting engine.  
Direct coupled equipment components such as,  
but not limited to, blades, impellors, pulleys,  
sprockets, etc., must be securely attached.  
WHEN OPERATING EQUIPMENT  
Do not tip engine or equipment at angle which  
causes gasoline to spill.  
Do not choke carburetor to stop engine.  
WHEN TRANSPORTING EQUIPMENT  
Transport with fuel tank EMPTY or with fuel shut-off  
WARNING  
valve OFF.  
Rotating parts can contact or entangle  
hands, feet, hair, clothing, or accessories.  
WHEN STORING GASOLINE OR EQUIPMENT  
WITH FUEL IN TANK  
Store away from furnaces, stoves, water heaters or  
other appliances that have pilot light or other  
ignition source because they can ignite gasoline  
vapors.  
Traumatic amputation or severe laceration  
can result.  
Operate equipment with guards in place.  
Keep hands and feet away from rotating parts.  
Tie up long hair and remove jewelry.  
Do not wear loose-fitting clothing, dangling  
drawstrings or items that could become caught.  
4
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SAFETY  
WARNING  
WARNING  
Engines give off carbon monoxide, an  
odorless, colorless, poison gas.  
Unintentional sparking can result in fire or  
electric shock.  
Breathing carbon monoxide can cause  
nausea, fainting or death.  
Unintentional start-up can result in en-  
tanglement, traumatic amputation, or lac-  
eration.  
Start and run engine outdoors.  
Do not start or run engine in enclosed area, even if  
doors or windows are open.  
BEFORE PERFORMING ADJUSTMENTS OR  
REPAIRS  
Disconnect spark plug wire and keep it away from  
spark plug.  
WARNING  
Running engines produce heat. Engine  
parts, especially muffler, become extremely  
hot.  
Disconnect battery at negative terminal (only  
engines with electric start).  
Severe thermal burns can occur on contact.  
WHEN TESTING FOR SPARK  
Use approved spark plug tester.  
Combustible debris, such as leaves, grass,  
brush, etc. can catch fire.  
Do not check for spark with spark plug removed.  
Allow muffler, engine cylinder and fins to cool  
before touching.  
Remove accumulated combustibles from muffler  
area and cylinder area.  
Install and maintain in working order a spark  
arrester before using equipment on forest-covered,  
grass-covered, brush-covered unimproved land.  
The state of California requires this (Section 4442  
of the California Public Resources Code). Other  
states may have similar laws. Federal laws apply  
on federal land.  
ENGINE INFORMATION  
TECHNICAL INFORMATION  
POWER RATINGS: The power ratings for an individual engine  
model are initially developed by starting with SAE (Society of  
Automotive Engineers) code J1940 (Small Engine Power &  
Torque Rating Procedure) (Revision 2002-05). Given both the  
wide array of products on which our engines are placed, and the  
variety of environmental issues applicable to operating the  
equipment, it may be that the engine you have purchased will not  
develop the rated horsepower when used in a piece of power  
equipment (actual “on-site” power). This difference is due to a  
variety of factors including, but not limited to, the following:  
differences in altitude, temperature, barometric pressure,  
humidity, fuel, engine lubrication, maximum governed engine  
speed, individual engine to engine variability, design of the  
particular piece of power equipment, the manner in which the  
engine is operated, engine run-in to reduce friction and clean out  
of combustion chambers, adjustments to the valves and  
carburetor, and other factors. The power ratings may also be  
adjusted based on comparisons to other similar engines utilized  
in similar applications, and will therefore not necessarily match the  
values derived using the foregoing codes.  
5
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ENGINE INFORMATION  
2
4
3
3
4
2
1
5
1
6
5
7
6
7
12  
12  
8
11  
9
11  
8
9
1. Oil drain  
7. Air cleaner  
8. In-line fuel filter (if equipped)  
9. Carburetor  
10. Oil filter (if equipped)  
11. Spark plug wire  
12. Engine  
10  
2. Oil fill/Dipstick  
3. Rotating screen  
4. Blower housing  
10  
5. Muffler/(Muffler guard, if equipped)/  
(Spark arrester, if equipped)  
Model  
xxxxx  
Type  
xxxx xx  
Code  
xxxxxxxx  
6. 12 V electric starter  
MODEL SERIES 210000  
GENERAL INFORMATION  
ENGINE MODEL  
This is a single cylinder, overhead valve (OHV), air-cooled  
engine. It is a low emissions engine.  
In the state of California, OHV Model Series 210000,  
280000 and 310000 engines are certified by the California  
Air Resources Board to meet emissions standards for 250  
hours. Such certification does not grant the purchaser,  
owner or operator of this engine any additional warranties  
with respect to the performance or operational life of this  
engine. This engine is warranted solely according to the  
product and emissions warranties stated elsewhere in this  
manual.  
Bore . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7/16 in. (87.31 mm)  
Stroke . . . . . . . . . . . . . . . . . . . . . . . 2-17/64 in. (77.78 mm)  
Displacement . . . . . . . . . . . . . . . . 21.00 cu. in. (344.1 cc)  
MODEL SERIES 280000  
Bore . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7/16 in. (87.31 mm)  
Stroke . . . . . . . . . . . . . . . . . . . . . . . . 3-1/16 in. (77.78 mm)  
Displacement . . . . . . . . . . . . . . . . 28.42 cu. in. (465.7 cc)  
MODEL SERIES 310000  
Bore . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9/16 in. (90.60 mm)  
Stroke . . . . . . . . . . . . . . . . . . . . . . . . 3-1/16 in. (77.78 mm)  
Displacement . . . . . . . . . . . . . . . . 30.59 cu. in. (501.2 cc)  
Note: For practical operation, the horsepower loading should  
not exceed 85% of rated horsepower. Engine power will  
decrease 3-1/2% for each 1,000 feet (300 meters) above sea  
level and 1% for each 10° F (5.6° C) above 77° F (25° C).  
Engine will operate satisfactorily at an angle up to 15°.  
TUNE-UP SPECIFICATIONS  
Armature air gap . . . 0.010 – 0.014 in. (0.25 – 0.36 mm)  
Spark plug gap . . . . . . . . . . . . . . . . . . 0.030 in. (0.76 mm)  
Valve clearance with valve springs installed and piston 1/4 in.  
(6 mm) past top dead center (check when engine is cold).  
See Repair Manual P/N 272147.  
Intake . . . . . . . . . . . . . 0.003 – 0.005 in. (0.08 – 0.13 mm)  
Exhaust . . . . . . . . . . . 0.005 – 0.007 in. (0.13 – 0.18 mm)  
6
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275038  
OIL  
SAE Viscosity Grades  
CAUTION: This engine is shipped from Briggs &  
Stratton without oil. Check oil level before starting  
engine. If you start the engine without oil, the engine  
will be damaged beyond repair and will not be  
covered under warranty.  
**  
*
OIL CAPACITY  
Engine without oil filter holds approximately 1-1/2 quarts  
(48 ounces; 1.4 liters).  
-20  
-30  
0
20  
32 40  
0
60  
80  
100  
40  
°F  
°C  
-20  
-10  
10  
20  
30  
STARTING TEMPERATURE RANGE ANTICIPATED BEFORE NEXT OIL CHANGE  
TYPE OF OIL TO USE  
*
CAUTION: Air cooled engines run hotter than  
automotive engines. The use of non-synthetic  
multi-viscosity oils (5W-30, 10W-30, etc.) in  
temperatures above 40° F (4° C) will result in higher  
than normal oil consumption. When using a  
multi-viscosity oil, check oil level more frequently.  
Use a high quality detergent oil classified “For Service  
SF, SG, SH, SJ” or higher, such as Briggs & Stratton  
30W, Part Number 100005 (20 oz) or 100028 (48 oz).  
Do not use special additives.  
Choose a viscosity according to the table opposite.  
Note: Synthetic oil meeting ILSAC GF-2, API  
certification mark and API service symbol  
(shown at left) with “SJ/CF ENERGY CON-  
SERVING” or higher, is an acceptable oil at all  
temperatures. Use of synthetic oil does not  
alter required oil change intervals.  
** CAUTION: SAE 30 oil, if used below 40° F (4° C), will  
result in hard starting and possible engine bore  
damage due to inadequate lubrication.  
CHECKING AND ADDING OIL  
Check oil level before starting the engine.  
Check level daily, or after every eight (8) hours.  
Keep oil level at FULL.  
Do not overfill.  
Oil Fill  
[3] Replace and tighten dip-  
stick. Remove and check  
[1] Place engine level and  
clean around oil fill area.  
[2] Remove dipstick and  
wipe clean with cloth.  
oil level.  
[4] Oil level should be at  
FULL line on dipstick.  
[5] If needed, add oil slowly -  
recheck. Do not over fill.  
[6] Replace and tighten dip-  
stick.  
7
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FUEL  
This engine is certified to operate on gasoline. Exhaust  
TYPE OF FUEL TO USE  
Emission Control System: EM (Engine Modifications).  
Use clean, fresh, regular unleaded gasoline with a  
minimum of 85 octane. Fresh fuel prevents gum from  
forming in the fuel system or on essential carburetor parts.  
Purchase fuel in quantity that can be used within 30 days.  
Do not use gasoline which contains Methanol.  
Do not mix oil with gasoline.  
For engine protection use Briggs & Stratton Gasoline  
Additive available from your Authorized Briggs &  
Stratton Dealer (P/N 5041 or single use pouch).  
CAUTION: Some fuels, called oxygenated or reformu-  
lated gasoline, are gasoline blended with alcohols or  
ethers. Excessive amounts of these blends can damage  
the fuel system or cause performance problems. If any  
undesirable operating symptoms occur, use gasoline  
with a lower percentage of alcohol or ether.  
ADDING FUEL  
WARNING  
[1] Remove cap. Fill tank to approximately 1-1/2  
inches below top of neck to allow for fuel  
expansion. Be careful not to overfill.  
Briggs & Stratton Smart-fill) fuel canfills to the  
correct level and automatically shuts off, reduc-  
ing spills and emissions.  
Turn engine OFF and let engine cool at least 2  
minutes before removing gas cap.  
Fill fuel tank outdoors or in well-ventilated area.  
Keep gasoline away from sparks, open flames,  
pilot lights, heat, and other ignition sources.  
[2] Replace cap before starting.  
If fuel spills, wait until it evaporates before  
starting engine.  
STARTING  
OIL PRESSURE SWITCH  
WARNING  
If engine is equipped with an oil pressure switch, the switch  
will either activate a warning light or stop the engine when  
the engine runs low on oil. (Read the operating instructions  
supplied by the equipment manufacturer to determine  
which way your engine is equipped because the equipment  
manufacturer supplies the oil pressure gauge.)  
Do not use pressurized starting fluids.  
Vapors are flammable.  
See OIL PRESSURE on page 12 for oil filling instructions.  
STARTING AND OPERATING TIPS  
Store and fuel equipment in level position.  
Use fresh fuel. (See Fuel.)  
Periodically remove grass buildup under mower  
deck. (See Maintenance.)  
Use correct type of oil for expected starting  
After engine has started, let it warm up several  
seconds to several minutes, depending on outside  
temperature.  
temperature. (See Oil.)  
Remove external equipment/engine loads. (See  
equipment operating instructions.)  
For maximum performance and life, operate engine  
with choke in RUN and throttle in FAST.  
Start lawn mower on hard surface or over previously  
cut grass.  
8
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STARTING AND STOPPING  
REWIND (MANUAL) STARTER (auxiliary)  
TO START ENGINE  
1/4 TURN  
Choke/throttle control  
Choke  
Throttle  
[1] Check oil level (see p. 7).  
[2] Open fuel shut-off valve  
(if equipped) 1/4 turn.  
[4] If choke and throttle are on the  
same control, move control to  
CHOKE or START  
[3] If choke and throttle controls are  
separate, move choke control to  
CHOKE. Move throttle to FAST.  
WARNING  
[7] Let engine warm up.  
If choke equipped:  
Slowly adjust toward  
RUN position. Wait  
until engine runs  
smoothly before each  
choke adjustment.  
[6] Grasp rope handle. Pull slowly until resistance is  
felt, then pull rapidly to start engine and avoid  
kickback.  
[5] Insert key and  
turn to RUN.  
TO STOP ENGINE  
CAUTION: Do not stop  
engine by moving choke  
control to CHOKE.  
Backfire, fire or engine  
damage could occur.  
1/4 TURN  
[2] Close fuel shut-off valve  
(if equipped).  
[1] With throttle in FAST, turn key to OFF.  
Remove key and store out of reach of children.  
9
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STARTING AND STOPPING  
ELECTRIC (KEY) STARTER (if equipped)  
TO START ENGINE  
Choke  
Throttle  
Choke/throttle control  
[2] If choke and throttle controls are sepa-  
rate, move choke control to CHOKE.  
Move throttle to FAST.  
[3] If choke and throttle are on the  
same control, move control to  
CHOKE or START  
[1] Check oil level.  
CAUTION:  
1/4 TURN  
[6] Let engine warm up.  
If choke equipped:  
Slowly adjust toward  
RUN position. Wait  
until engine runs  
smoothly before each  
choke adjustment.  
To prolong starter life,  
use  
short  
starting  
cycles (5 seconds max-  
imum, then wait one  
minute). Follow equip-  
ment manufacturer’s  
recommendations for  
charging battery.  
[4] Open fuel shut-off  
valve (if equipped).  
[5] Insert key and  
turn to START.  
TO STOP ENGINE  
1/4 TURN  
[1] With throttle in FAST, turn key to OFF.  
Remove key and store out of reach of children.  
[2] Close fuel shut-off valve  
(if equipped).  
10  
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MAINTENANCE  
MAINTENANCE  
EMISSION CONTROL  
Regular maintenance will improve the performance and  
extend the life of the engine. See any Authorized Briggs &  
Stratton Dealer for service. Use only genuine Briggs &  
Stratton parts. Other parts may not perform as well,  
may damage the engine, and may result in injury. In  
addition, use of other parts may void your warranty.  
Maintenance, replacement or repair of the emission  
control devices and systems may be performed by any  
nonroad engine repair establishment or individual.  
However, to obtain no charge repairs under the terms and  
provisions of the Briggs & Stratton warranty statement, any  
service or emission control part repair or replacement must  
be performed by a factory authorized dealer.  
Task  
CHANGING OIL  
Perform task at hourly  
or calendar interval,  
whichever comes first.  
TO REMOVE  
5/16” HEX  
3/8” SQUARE  
Check Oil Level  
Change Oil  
*
Change oil filter  
(if equipped)  
*
7/16” PIPE  
OIL DRAIN  
PLUG  
Typical drain  
plugs  
Service air cleaner  
pre-cleaner (if  
equipped)  
**  
**  
[1] Place engine level.  
WARNING  
Replace air cleaner  
cartridge (if not  
equipped with pre-  
cleaner)  
[2] Disconnect spark plug  
wire and keep away from  
spark plug. Disconnect  
battery (if equipped with  
electric starter) at nega-  
tive terminal.  
Replace air cleaner  
cartridge (if equipped  
with pre-cleaner)  
*
*
[3] With engine OFF but still warm remove oil drain  
plug and drain oil into appropriate receptacle.  
Clean Extended Life  
Seriesair cleaner  
cartridge  
[4] Reinstall drain plug. Remove dipstick.  
*
*
[5] Fill to FULL mark on dipstick with new oil.  
Replace Extended  
Life Series  
air cleaner cartridge  
Do not overfill.  
*
*
Note: Engine without oil filter holds approximately 1-1/2  
quarts (48 ounces; 1.4 liters). Engine equipped with filter  
holds approximately 1-3/4 quarts (56 ounces; 1.7 liters).  
Inspect spark arrester  
(if equipped)  
[6] Replace dipstick.  
Replace spark plug  
Replace in-line fuel fil-  
ter (if equipped)  
Clean cooling system  
*
*
Check valve clear-  
ance  
*
Change oil after first 5 to 8 hours of use, then every  
CAUTION: Used oil is a hazardous waste product.  
Dispose of used oil properly. Do not discard with  
household waste. Check with your local authorities,  
service center, or dealer for safe disposal/recycling  
facilities.  
50 hours or every season. Change oil every 25 hours  
when operating the engine under heavy load or in high  
temperatures.  
** Clean more often under dusty conditions or when  
airborne debris is present. Replace air cleaner parts, if  
very dirty.  
11  
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MAINTENANCE  
AIR CLEANER  
CAUTION: Do not use pressurized air or solvents to clean cartridge. Pressurized air can damage cartridge;  
solvents will dissolve cartridge.  
FLAT AIR CLEANER REMOVAL/ INSTALLATION  
[1] Pull up on air cleaner cover handle, and rotate toward  
engine.  
[2] Remove air cleaner cover.  
[3] Carefully lift air cleaner cartridge and pre-cleaner, if  
equipped, from blower housing.  
OVAL AIR CLEANER REMOVAL / INSTALLATION  
[1] Remove cover knob and cover.  
[2] Remove cartridge knob.  
[3] Carefully lift air cleaner assembly (pre-cleaner, if  
equipped, and cartridge) from base over stud.  
Note: To clean pre-cleaner, wash in soapy water. Squeeze  
Note: To clean pre-cleaner (if equipped), separate it from  
cartridge and wash soapy water. Squeeze dry in a clean  
cloth. Saturate in engine oil. Squeeze in clean, absorbent  
cloth to remove all EXCESS oil.  
dry in a clean cloth. DO NOT OIL.  
[4] Clean base of air cleaner cartridge area carefully to  
prevent debris from entering engine.  
[5] Place air cleaner pre-cleaner, if equipped, and cartridge  
into blower housing. Cartridge must fit securely in base.  
[6] Align tabs on cover with slots of blower housing and  
replace cover.  
[4] Clean base carefully to prevent debris from entering  
carburetor.  
[5] Reassemble pre-cleaner on cartridge and place  
assembly over stud. Air cleaner must fit securely in  
base.  
[7] Hook handle and close cover.  
[6] Tighten cartridge knob securely.  
[7] Replace cover and tighten cover knob securely.  
COVER  
KNOB  
COVER  
CARTRIDGE  
KNOB  
PRE-CLEANER  
(if equipped)  
CARTRIDGE  
CARTRIDGE  
PRE-CLEANER  
COVER  
TABS  
STUD  
BASE  
SLOTS  
EXTENDED LIFE SERIESE CARTRIDGE ONLY  
This filter, IF STAMPED ‘WASH-  
ABLE’, can be washed with warm  
water and mild soap.  
IMPORTANT: Rinse in tap water  
with SCREEN side up allowing dirt  
and debris to filter out.  
Leave filter to dry overnight before  
reinstalling.  
12  
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MAINTENANCE  
HIGH FLOW AIR CLEANER MAINTENANCE  
Perform this maintenance every 25 hours or every season,  
clean more often under dusty conditions or when airborne  
debris is present. This filter is made of cotton, which is  
different from a standard paper filter, therefore it MUST be  
oiled.  
[1] Remove clamp and pull air cleaner from intake  
manifold.  
WARNING  
Never use motor oil, transmission fluid, WD40, or other  
oils. Failure to follow instructions can cause fires  
resulting in death or serious injury. Use only air filter oil  
designed specifically for air filters.  
[7] Spray the filter with oil, or pour small amount onto  
each pleat and allow filter to stand for 20 minutes. The  
filter is correctly oiled when the cotton changes from  
white to the color of the oil.  
[2] Remove as much dirt from the filter as possible.  
[3] Using the High Flow Air Filter Cleaner Kit, Briggs &  
Stratton part no. 5089D, spray the filter with cleaner.  
Allow the solution to soak in to the filter for about 15  
minutes.  
CAUTION: DO NOT over-oil air filter, it will interfere  
with engine performance and may cause engine  
damage. If the filter is placed on cardboard for 10  
minutes and leaves a stain, it is over oiled. Wash/clean  
and re-oil per above instructions.  
CAUTION: Never use strong detergents, high  
pressure water, or gasoline to clean this filter.  
[4] Rinse the filter with warm water, inside first and then  
outside. (Let the water run from the clean side to the  
dirty side.)  
[8] Re-install air filter.  
CARBURETOR  
HIGH FLOW  
AIR FILTER  
[5] Allow the filter to dry completely. It is best to allow the  
filter to dry naturally. Don’t use heat, this might shrink  
the cotton.  
[6] Use only air filter oil, such as the oil included in the  
cleaning kit (P/N 5089D), to re-oil the filter.  
FILTER  
P/N 698973  
CLAMP  
OIL PRESSURE  
OIL FILTER (IF EQUIPPED)  
Replace oil filter after every 100 hours of operation.  
[1] Drain engine oil and remove oil filter.  
If oil pressure drops too low, an oil pressure switch (if  
engine is equipped) will either activate a warning light or  
stop the engine. Check oil level with dipstick. If oil level is  
between ADD and FULL mark on dipstick, Do not try to  
restart engine. Contact an Authorized Briggs & Stratton  
Service Dealer. Do not operate engine until oil pressure is  
corrected.  
[2] Before installing new filter, lightly oil filter gasket with  
fresh, clean engine oil.  
[3] Screw filter on by hand until gasket contacts oil filter  
adapter. Tighten 1/2 to 3/4 turn more.  
If oil level is below ADD mark on dipstick, add oil to bring  
level to FULL mark. Restart engine and check oil pressure.  
If pressure is normal, continue to operate engine.  
Note: Oil pressure gauge, if engine is equipped, is supplied  
by manufacturer of equipment.  
[4] Add fresh oil. Fill to FULL line on dipstick.  
[5] Start and run engine at idle to check for oil leaks.  
[6] Stop engine. Recheck oil level and add oil if required.  
13  
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MAINTENANCE  
ENGINE AND ENGINE PARTS  
We recommend that you see an authorized Briggs & Stratton Service Dealer for all maintenance and service of the engine  
and engine parts. Use only genuine Briggs & Stratton parts.  
If you perform any maintenance on the engine, first disconnect the spark plug wire  
from the spark plug, and disconnect the battery at the negative terminal (electric  
WARNING  
starter engines only) to prevent unintentional sparking. Unintentional sparking can  
result in fire or electric shock. Unintentional start-up can result in entanglement,  
traumatic amputation or laceration. Use only correct tools.  
Do not strike the flywheel with a hammer or hard object because the flywheel may  
later shatter during operation.  
Do not tamper with governor spring, links or other parts to increase engine speed.  
WARNING  
REPLACE FUEL FILTER (if equipped)  
MUFFLER  
Replacement parts for the muffler  
must be the same and installed in the  
same position as the original parts,  
otherwise fire can occur.  
EXTENDED LIFE SERIESFUEL FILTER  
PART NO. 695666 OR 5070  
(WITH FUEL PUMP)  
WARNING  
WARNING  
If muffler is equipped with spark arrester screen, remove  
screen for inspection. Replace screen if damaged or  
plugged.  
Drain fuel tank or close  
fuel shut-off valve before  
replacing fuel filter.  
Otherwise, fuel can leak  
out, creating a fire/ex-  
plosion hazard.  
STANDARD FUEL FILTER  
PART NO. 394358  
(WITH FUEL PUMP)  
PART NO. 298090 OR 5018  
(WITHOUT FUEL PUMP)  
SPARK PLUG  
Use only Briggs & Stratton Spark Tester (part number  
19368) to check for spark.  
FUEL HOSE  
CLAMPS  
AIR COOLING SYSTEM  
CLEAN OUT CHAFF AND  
DEBRIS  
Note: In some areas, local  
law requires using resistor  
.030” (0.76 mm)  
WIRE GAGE  
Debris may clog the en-  
gine’s air cooling system.  
Remove blower housing  
and clean area shown to  
prevent overheating and  
engine damage.  
spark plug to suppress igni-  
tion signals. If this engine  
was originally equipped  
with resistor spark plug,  
use same type for replace-  
ment.  
CLEANING DEBRIS  
Daily or before every use, clean grass, chaff or accumu-  
lated debris from engine. Keep linkage, spring and  
controls clean. Keep area around and behind muffler free  
of any combustible debris.  
Engine parts should be kept clean to  
WARNING  
reduce the risk of overheating and  
ignition of accumulated debris. This is  
especially important if cutting tall grass.  
CAUTION: Do not use water to clean engine parts.  
Water could contaminate fuel system. Use a brush  
or dry cloth.  
CLEAN  
CLEAN  
CLEAN  
CLEAN  
Muffler,  
Spark Arrester  
Linkage, Springs,  
Controls  
Finger Guard  
Rotating Screen  
14  
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ADJUSTMENTS  
TO ADJUST REMOTE CHOKE  
TUNE-UP SPECIFICATIONS  
Armature air gap . . . 0.010 – 0.014 in. (0.25 – 0.36 mm)  
Spark plug gap . . . . . . . . . . . . . . . . . . 0.030 in. (0.76 mm)  
CASING  
CLAMP  
SCREW  
Valve clearance with valve springs installed and piston 1/4 in.  
(6 mm) past top dead center (check when engine is cold).  
See Repair Manual P/N 272147.  
[1] Hold choke control to CHOKE or START position.  
[2] Loosen casing clamp screw.  
[3] Pull casing, wire and choke lever in direction of  
Intake . . . . . . . . . . . . . 0.003 – 0.005 in. (0.08 – 0.13 mm)  
Exhaust . . . . . . . . . . . 0.005 – 0.007 in. (0.13 – 0.18 mm)  
CONTROL ADJUSTMENTS  
arrow to end of travel.  
[4] Tighten casing clamp screw.  
CARBURETOR ADJUSTMENT  
WARNING  
The manufacturer of the equipment on which this  
engine is installed specifies top speed at which the  
engine will be operated. DO NOT EXCEED this speed.  
WARNING  
Differences in fuel, temperature, altitude or load may require  
minor carburetor adjustment. Air cleaner and its cover must  
be assembled to carburetor before starting engine.  
The carburetor on this engine is equipped with an idle  
mixture valve with a limiter (see inset), which allows some  
adjustment, and an idle speed adjustment screw.  
TO ADJUST CARBURETOR  
TO ADJUST REMOTE THROTTLE  
If the engine does not start or if it runs roughly, the remote  
throttle control may need adjustment. See your authorized  
Briggs & Stratton dealer or follow the instructions below.  
CARBURETOR  
THROTTLE  
LEVER  
IDLE MIXTURE  
VALVE  
WITH LIMITER  
HOLE IN  
GOVERNOR  
CONTROL LEVER  
STOP  
SWITCH  
GOVERNOR  
CONTROL PLATE  
IDLE  
SPEED  
SCREW  
[1] To adjust idle speed, start engine and warm up  
about 5 minutes.  
[2] With engine running, place equipment throttle  
control in SLOW position.  
[3] Rotate carburetor throttle lever against the idle  
speed screw and hold it. Turn idle speed screw to  
obtain 1750 rpm (use a tachometer).  
GOVERNOR CONTROL RACK  
CASING CLAMP SCREW  
[1] Move remote throttle control to FAST position.  
[4] Then rotate idle mixture valve full travel clockwise  
and then counterclockwise.  
[2] Hole in governor control lever (located just behind  
governor control plate) must align with hole in  
governor control plate, as illustrated above.  
Note: DO NOT remove limiter caps. DO NOT  
force beyond limits.  
[3] If holes do not line up, loosen casing clamp screw  
and then move governor control rack until it does.  
[5] Then, position idle mixture valve in middle of travel.  
[6] Check idle speed. Re-adjust to 1750 rpm, if needed.  
[7] Move throttle control to FAST position. Engine  
should accelerate smoothly. If it does not, adjust  
idle mixture valve counterclockwise 1/8 turn.  
[4] Tighten casing clamp screw.  
[5] Check operation of throttle. Move throttle control to  
STOP position.  
Note: Engines operated at approximately 3000 to 5000 feet  
(900 to 1500 meters) above sea level may require a high  
altitude carburetor nozzle. If erratic performance is observed,  
contact a Briggs & Stratton Authorized Service Dealer for cost  
to install/purchase a high altitude carburetor nozzle.  
[6] Governor control lever must make good contact with  
stop switch (if equipped). Readjust if necessary.  
15  
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SERVICE & STORAGE  
You may locate your nearest Authorized Briggs & Stratton  
Service Dealer in our dealer locator map on our web site  
PARTIAL LIST OF BRIGGS & STRATTON PARTS  
Models 280000, 310000 AVSE series  
Extended Life SeriesE flat air cleaner cartridge 697153  
(washable, no pre-cleaner required)  
Extended Life SeriesE Maintenance Kit . . . . . . . . 5128  
(Includes oil, A/C filter, spark plug, gas additive)  
Flat air cleaner cartridge and pre-cleaner kit . . . . . 5077  
Flat air cleaner cartridge . . . . . . . . . . . . . . . . . . . . 698083  
Flat air cleaner pre-cleaner . . . . . . . . . . . . . . . . . . 697015  
or in the “Yellow Pages”  
directory under “Engines, Gasoline” or “Gasoline  
Engines,” or “Lawn Mowers” or similar category.  
Note: Walking fingers logo and “Yellow Pages” are regis-  
tered trademarks in various jurisdictions.  
An illustrated shop manual includes  
common specifications and detailed  
information covering adjustment,  
tune-up and repair of Briggs & Strat-  
ton single cylinder, OHV, 4 cycle  
engines. It is available for purchase  
from an Authorized Briggs & Stratton  
Service Dealer or you can order it  
from the factory. Write:  
Maintenance Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5127  
(Includes oil, A/C filter, spark plug, gas additive)  
Model 210000 AVSE series  
Flat air cleaner cartridge and pre-cleaner kit . . . . . 5079  
Flat air cleaner cartridge . . . . . . . . . . . . . . . . . . . . 698413  
Flat air cleaner pre-cleaner . . . . . . . . . . . . . . . . . . 697292  
Maintenance Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5126  
(Includes oil, A/C filter, spark plug, gas additive)  
Briggs & Stratton Corporation  
Attn: Service Division  
P. O. Box 1144  
Part No. 272147  
Oval air cleaner cartridge and pre-cleaner kit . . . . 5053  
Oval air cleaner cartridge . . . . . . . . . . . . . . . . . . . . 496894  
Oval air cleaner pre-cleaner . . . . . . . . . . . . . . . . . . 272403  
High Flow Air Filter (cylinder) . . . . . . . . . . . . . . . . 698973  
High Flow Air Filter Cleaning Kit . . . . . . . . . . . . . . . 5089D  
Synthetic Oil (32 oz.) . . . . . . . . . . . . . . . . . . . . . . . 100074  
Oil (20 oz.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100005  
Oil (48 oz.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100028  
Oil filter (3-1/2 in. long) . . . . . . . . . . . . . . . . . . . . . . 491056  
Oil filter (2-1/4 in. long) . . . . . . . . . . . . . . . . . . . . . . 492932  
Fuel filter . . . . . . . . . . . . . . . . . . . . . . . . . 298090 -or- 5018  
(for engines without fuel pump installed)  
Milwaukee, WI 53201  
STORAGE  
Engines stored over 30 days need special attention.  
[1] To prevent gum from forming in fuel system or on  
essential carburetor parts:  
a) if fuel tank contains oxygenated or reformulated  
gasoline (gasoline blended with an alcohol or an  
ether), run engine until it stops from lack of fuel, or b) if  
fuel tank contains gasoline, either run engine until it  
stops from lack of fuel, or add a gasoline additive to the  
gas in the tank. (See parts list. Single – use pouches of  
gas additive are available from your service dealer.) If  
you use a gas additive, run the engine for several  
minutes to circulate the additive through the carburetor.  
Then, engine and fuel can be stored up to 24 months.  
Extended Life Seriesfuel filter . . . . . . 695666 -or- 5070  
(for engines equipped with fuel pump)  
Fuel filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 394358  
(for engines equipped with fuel pump)  
Gas additive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5041  
Resistor spark plug . . . . . . . . . . . . . . . . . . . . . . . . . 491055  
Long life platinum spark plug . . . . . . . . . . . . . . . . . . . 5066  
(used on most OHV engines)  
[2] While engine is still warm, change oil.  
Spark plug wrench . . . . . . . . . . . . . . . . . . . 89838 -or- 5023  
Spark tester . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19368  
Oil pump kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5056  
(uses standard electric drill to remove oil from engine quickly)  
[3] Remove spark plug and pour about 1 oz. (30 ml) of  
engine oil into cylinder. Replace spark plug and crank  
slowly to distribute oil.  
[4] Clean engine of surface debris, chaff or grass.  
SERVICE  
[5]  
Store in a clean, dry area.  
WARNING Do not store in same area  
as a stove, furnace, water  
See an Authorized Briggs & Stratton Service Dealer. Each  
one carries a stock of Genuine Briggs & Stratton Parts and  
is equipped with special service tools. Trained mechanics  
assure expert repair service on all Briggs & Stratton  
engines. Only dealers advertising as “Authorized Briggs &  
Stratton” are required to meet Briggs & Stratton standards.  
heater, or other appliance  
that uses a pilot light or  
has a device that can  
create a spark.  
When you purchase equipment powered by a  
Briggs & Stratton engine, you are assured of  
highly skilled, reliable service at more than  
30,000  
Authorized  
Service  
Dealers  
worldwide, including more than 5,000 Master  
Service Technicians. Look for these signs  
wherever Briggs & Stratton service is offered.  
16  
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LIMITED WARRANTY  
Briggs & Stratton Corporation will repair or replace, free of charge, any part(s) of the engine that is defective in material or workmanship or both.  
Transportation charges on parts submitted for repair or replacement under this warranty must be borne by purchaser. This warranty is effective for the  
time periods and subject to the conditions stated below. For warranty service, find the nearest Authorized Service Dealer in our dealer locator map  
THERE IS NO OTHER EXPRESS WARRANTY. IMPLIED WARRANTIES, INCLUDING THOSE OF MERCHANTABILITY AND FITNESS FOR A  
PARTICULAR PURPOSE, ARE LIMITED TO ONE YEAR FROM PURCHASE, OR TO THE EXTENT PERMITTED BY LAW ANY AND ALL IMPLIED  
WARRANTIES ARE EXCLUDED. LIABILITY FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES ARE EXCLUDED TO THE EXTENT  
EXCLUSION IS PERMITTED BY LAW. Some states or countries do not allow limitations on how long an implied warranty lasts, and some states or  
countries do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation and exclusion may not apply to you.  
This warranty gives you specific legal rights and you may also have other rights which vary from state to state and country to country.  
r
(Kool Bore)  
r
(Sleeve Bore)  
4
5
Consumer Use  
2 years  
1 year  
2 years  
90 days  
1 year  
90 days  
2 years  
1 year  
Commercial Use  
*
Note the following special warranty periods: 2 years for Classicengines in the European Union and Eastern European countries, for all consumer products in  
the European Union, and for emission control systems on engines certified by EPA and CARB. 5 years for consumer use, 90 days for commercial use of Touch-N-  
Mowstarter on Quantumand Intekengines. Engines used in competitive racing or on commercial or rental tracks are not warrantied.  
The warranty period begins on the date of purchase by the first retail consumer or commercial end user, and continues for the period of time stated in the table  
above. “Consumer use” means personal residential household use by a retail consumer. “Commercial use” means all other uses, including use for commercial,  
income producing or rental purposes. Once an engine has experienced commercial use, it shall thereafter be considered as a commercial use engine for pur-  
poses of this warranty.  
NO WARRANTY REGISTRATION IS NECESSARY TO OBTAIN WARRANTY ON BRIGGS & STRATTON PRODUCTS. SAVE YOUR PROOF OF PURCHASE  
RECEIPT. IF YOU DO NOT PROVIDE PROOF OF THE INITIAL PURCHASE DATE AT THE TIME WARRANTY SERVICE IS REQUESTED, THE  
MANUFACTURING DATE OF THE PRODUCT WILL BE USED TO DETERMINE THE WARRANTY PERIOD.  
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EMISSION CONTROL WARRANTY COVERAGE IS APPLICABLE TO CERTIFIED ENGINES PURCHASED IN CALIFORNIA IN 1995 AND THERE-  
AFTER, WHICH ARE USED IN CALIFORNIA, AND TO CERTIFIED MODEL YEAR 1997 AND LATER ENGINES WHICH ARE PURCHASED AND  
USED ELSEWHERE IN THE UNITED STATES (AND AFTER JANUARY 1, 2001 IN CANADA).  
The California Air Resources Board (CARB), U.S. Elsewhere in the United States, new non-road, Your emission control system includes parts  
EPA and B&S are pleased to explain the Emission spark-ignition engines certified for model year such as the carburetor, air cleaner, ignition sys-  
Control System Warranty on your model year 1997 and later must meet similar standards set tem, muffler and catalytic converter. Also in-  
2002 and later small off-road engine (SORE). In forth by the U.S. EPA. B&S must warrant the emis- cluded may be connectors and other emission  
California, new small off-road engines must be de- sion control system on your engine for the periods related assemblies.  
signed, built and equipped to meet the State’s of time listed below, provided there has been no  
Where a warrantable condition exists, B&S will  
repair your small off-road engine at no cost to  
you including diagnosis, parts and labor.  
stringent anti-smog standards.  
abuse, neglect or improper maintenance of your  
small off-road engine.  
Small off-road engines are warranted relative to emission control parts defects for a period of two years, subject to provisions set forth below. If any  
covered part on your engine is defective, the part will be repaired or replaced by B&S.  
As the small off-road engine owner, you are re- As the small off-road engine owner, you should The undisputed warranty repairs should be  
sponsible for the performance of the required however be aware that B&S may deny you war- completed in a reasonable amount of time, not  
maintenance listed in your Operating and Main- ranty coverage if your small off-road engine or a to exceed 30 days.  
tenance Instructions. B&S recommends that part has failed due to abuse, neglect, improper  
you retain all your receipts covering mainte- maintenance or unapproved modifications.  
If you have any questions regarding your war-  
ranty rights and responsibilities, you should con-  
nance on your small off-road engine, but B&S  
You are responsible for presenting your small  
tact  
a
B&S Service Representative at  
cannot deny warranty solely for the lack of re-  
off-road engine to an Authorized B&S Service  
1-414-259-5262.  
ceipts or for your failure to ensure the perfor-  
mance of all scheduled maintenance.  
Dealer as soon as a problem exists.  
The emission warranty is a defects warranty.  
Defects are judged on normal engine perfor-  
mance. The warranty is not related to an in-use  
emission test.  
The following are specific provisions relative to your Emission Control Defects Warranty Coverage. It is in addition to the B&S engine warranty for non-  
regulated engines found in the Operating and Maintenance Instructions.  
1. Warranted Parts  
2. Length of Coverage  
set forth in the B&S Engine Warranty Policy.  
B&S is not liable to cover failures of War-  
ranted Parts caused by the use of add-on,  
non-original, or modified parts.  
B&S warrants to the initial owner and each  
subsequent purchaser that the Warranted  
Parts shall be free from defects in materials  
and workmanship which caused the failure  
of the Warranted Parts for a period of two  
years from the date the engine is delivered to  
a retail purchaser.  
Coverage under this warranty extends only  
to the parts listed below (the emission con-  
trol systems parts) to the extent these parts  
were present on the engine purchased.  
5. Maintenance  
a. Fuel Metering System  
Any Warranted Part which is not scheduled  
for replacement as required maintenance or  
which is scheduled only for regular inspec-  
tion to the effect of “repair or replace as nec-  
essary” shall be warranted as to defects for  
the warranty period. Any Warranted Part  
which is scheduled for replacement as re-  
quired maintenance shall be warranted as to  
defects only for the period of time up to the  
first scheduled replacement for that part. Any  
replacement part that is equivalent in perfor-  
mance and durability may be used in the per-  
formance of any maintenance or repairs.  
The owner is responsible for the perfor-  
mance of all required maintenance, as de-  
fined in the B&S Operating and Maintenance  
Instructions.  
Cold start enrichment system  
Carburetor and internal parts  
Fuel Pump  
3. No Charge  
Repair or replacement of any Warranted  
Part will be performed at no charge to the  
owner, including diagnostic labor which  
leads to the determination that a Warranted  
Part is defective, if the diagnostic work is  
performed at an Authorized B&S Service  
Dealer. For emissions warranty service  
contact your nearest Authorized B&S Ser-  
vice Dealer as listed in the “Yellow Pages”  
under “Engines, Gasoline,” “Gasoline En-  
gines,” “Lawn Mowers,” or similar category.  
b. Air Induction System  
Air cleaner  
Intake manifold  
c. Ignition System  
Spark plug(s)  
Magneto ignition system  
d. Catalyst System  
Catalytic converter  
Exhaust manifold  
Air injection system, Pulse valve  
4. Claims and Coverage Exclusions  
Warranty claims shall be filed in accordance  
with the provisions of the B&S Engine War-  
ranty Policy. Warranty coverage shall be ex-  
cluded for failures of Warranted Parts which  
are not original B&S parts or because of  
abuse, neglect or improper maintenance as  
e. Miscellaneous Items  
6. Consequential Coverage  
Vacuum, temperature, position,  
time sensitive valves  
and switches  
Coverage hereunder shall extend to the fail-  
ure of any engine components caused by  
the failure of any Warranted Part still under  
warranty.  
Connectors and assemblies  
5,819,513  
5,813,384  
5,765,713  
5,645,025  
5,642,701  
5,619,845  
5,606,948  
5,606,851  
5,548,955  
5,546,901  
5,503,125  
5,501,203  
5,497,679  
5,320,795  
5,271,363  
5,269,713  
5,265,700  
5,243,878  
5,235,943  
5,197,425  
5,197,422  
5,191,864  
5,188,069  
5,186,142  
5,138,996  
5,086,890  
5,070,829  
5,058,544  
5,040,644  
5,009,208  
4,996,956  
4,977,879  
4,971,219  
4,895,119  
4,819,593  
4,719,682  
4,633,556  
4,630,498  
4,522,080  
4,520,288  
4,512,499  
4,453,507  
4,430,984  
DES. 308,871  
DES. 308,872  
DES. 309,457  
DES. 356,951  
DES. 361,771  
DES. 375,963  
6,325,036  
6,284,123  
6,260,529  
6,230,678  
6,202,616  
6,116,212  
6,077,063  
6,064,027  
6,014,808  
5,894,715  
5,852,951  
5,823,153  
18  
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INFORMATIONS IMPORTANTES  
CORPORATION BRIGGS & STRATTON  
FAMILLE YBSXS.3192VA 274812  
CE MOTEUR EST CONFORME AUX NORMES  
ANTIPOLLUTION 2000 – 2001 DE CALIFORNIE  
POUR LES PETITS MOTEURS HORS ROUTE ET  
AUX NORMES ENVIRONNEMENTALES  
AMÉRICAINES (EPA PHASE 2) POUR LES  
PETITS MOTEURS HORS ROUTE. CONSULTEZ  
LE MANUEL DU PROPRIÉTAIRE POUR LES  
SPÉCIFICATIONS, L’ENTRETIEN ET LES  
AJUSTEMENTS. CONFORME À LA PÉRIODE  
D’ÉMISSION EPA : CATÉGORIE : C  
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