Multiquip Marine Sanitation System MQ41TDH User Manual
OPERATION AND PARTS MANUAL  
MODEL MQ41TDH  
DIESEL POWERED TRASH PUMP  
(HATZ 1D81Z DIESEL ENGINE)  
Revision #4 (08/15/08)  
To find the latest revision of this  
publication, visit our website at:  
www.multiquip.com  
THIS MANUAL MUST ACCOMPANYTHE EQUIPMENT AT ALLTIMES.  
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REPORTING SAFETY DEFECTS  
REPORTING SAFETY DEFECTS  
If you believe that your vehicle has a defect that could cause a crash or could cause injury or  
death, you should immediately inform the National Highway Traffic Safety Administration  
(NHTSA) in addition to notifying Multiquip at 1-800-421-1244.  
If NHTSA receives similar complaints, it may open an investigation, and if it finds that a safety  
defect exists in a group of vehicles, it may order a recall and remedy campaign. However,  
NHTSA cannot become involved in individual problems between you, your dealer, or  
Multiquip.  
To contact NHTSA, you may either call the Vehicle Safety Hotline toll-free at 1-888-327-4236  
(TTY: 1-800-424-9153), go to http://www.nhtsa.dot.gov; or write to:  
Administrator  
NHTSA  
1200 New Jersey Avenue S.E.  
Washington, DC 20590  
You can also obtain information about motor vehicle safety from http://www.safecar.gov.  
MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07) — PAGE 3  
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TRAINING CHECKLIST  
TRAINING CHECKLIST  
This checklist will lists some of the minimum requirements for machine maintenance and operation. Please detach it and make  
copies.Use this checklist whenever a new operator is to be trained or it can be used as a review for more experienced operator’s.  
TRAINING CHECKLIST  
NO.  
DESCRIPTION  
Read Operator’s Manual completely.  
OK?  
DATE  
1
Machine layout, location of components, checking of engine and oil  
levels.  
2
3
4
Fuel system, refueling procedure.  
Pump priming procedure.  
Emergency stop procedures.  
Engine start-up procedure.  
Lifting of machine (lift loops)  
Pump applications (lift, uses etc.)  
Suction strainer placement.  
Hose connections.  
5
6
7
8
9
10  
11  
12  
13  
14  
15  
16  
Pump placement.  
Trailer safety guidelines.  
Protective clothing guidelines.  
Vacuumtest procedure.  
Machine transport and storage.  
Clean out pump cavity procedure.  
Operator _________________________________________ Trainee __________________________________________  
COMMENTS:  
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DAILY PRE-OPERATION CHECKLIST  
DAILY PRE-OPERATION CHECKLIST  
DAILY PRE-OPERATION CHECKLIST  
Check engine oil level.  
1
2
Check fuel level (and for clean fuel).  
Check cooling fins and cooling air flow.  
Check engine air cleaner blockage indicator.  
Check engine air cleaner.  
3
4
5
6
Check engine battery and cable connections.  
Check pump volute.  
7
8
Check pump impeller.  
9
Check pump seal.  
10  
11  
12  
13  
14  
15  
16  
Check pump casing for cracks.  
Check trailer wheel lug nuts for tightness.  
Check trailer wheel bearings.  
Check trailer hitch and ball.  
Check trailer springs and hardware (jack stand).  
Check trailer tire pressure.  
Check trailer lights.  
COMMENTS:  
MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07) — PAGE 5  
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TABLE OF CONTENTS  
Proposition 65 Warning ............................................. 2  
Reporting Safety Defects.......................................... 3  
Training Checklist ...................................................... 4  
Daily Pre-Operation Checklist ................................... 5  
Table Of Contents ..................................................... 6  
Parts Ordering Procedures ....................................... 7  
Rules For Safe Operation ...................................... 8-9  
Operation and Safety Decals .................................. 10  
Specifications .......................................................... 11  
Components............................................................ 12  
General Information ................................................ 13  
Hatz 1D81Z Diesel  
Engine  
Crankcase Assembly .........................................46-47  
Crankcase Assembly (External Parts) ...............48-49  
Crankshaft Assembly .........................................50-51  
Camshaft Assembly ...........................................52-53  
Piston/Rings Assembly.......................................54-55  
Cylinder Head Assembly ....................................56-59  
Flywheel Assembly ............................................60-61  
Oil Pump Assembly ............................................62-63  
Timing Cover Assembly .....................................64-65  
Fuel Device ........................................................66-67  
Air Ducting Assembly .........................................68-69  
Breather Assembly.............................................70-71  
Fuel Tank Assembly ...........................................72-73  
Fuel Pump Assembly .........................................74-75  
Air Filter Assembly .............................................76-77  
Exhaust Silencer ................................................78-79  
Starter/Alternator Assembly...............................80-81  
Instrument Box Assembly ..................................82-83  
Lifting Magnet/Stop Device ................................84-85  
Multiquip MQ41TDH — Diesel  
PoweredTrashPump  
Application............................................................... 14  
Pre-Setup (Pump) ................................................... 15  
Initial Start-Up (Engine) ..................................... 16-18  
Maintenance ...................................................... 19-22  
Preparation For Long Term Storage ....................... 23  
Troubleshooting (Pump).......................................... 24  
Troubleshooting (Engine)................................... 25-26  
Explanation Of Codes In Remarks Column ............ 28  
Suggested Spare Parts ........................................... 29  
Name Plate And Decals ..................................... 30-31  
Pump Assy. ........................................................ 32-35  
Skid Assy. ........................................................... 36-37  
Trailer-10 Assy. .................................................. 38-39  
Trailer-1 Kit Assy. ............................................... 40-41  
Whl-2 Kit Assy. ................................................... 42-43  
TNKZZ Assy. (Optional Fuel Tank)..................... 44-45  
Terms and Conditions Of Sale — Parts .................. 86  
NOTE  
Specification and part number  
are subject to change without  
notice.  
PAGE 6 —MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07)  
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PARTS ORDERING PROCEDURES  
Ordering parts has never been easier!  
Choose from three easy options:  
Effective:  
January 1st, 2006  
Best Deal!  
Order via Internet (Dealers Only)  
Orderpartson-lineusingMultiquip’sSmartEquipwebsite!  
:
If you have an MQ Account, to obtain a  
Username and Password, E-mail us at:  
[email protected].  
■
■
■
View Parts Diagrams  
Order Parts  
PrintSpecificationInformation  
To obtain an MQ Account, contact your  
District Sales Manager for more information.  
Use the internet and qualify for a 5% Discount  
on Standard orders for all orders which include  
complete part numbers.*  
Gotowww.multiquip.comandclickon  
to log in and save!  
Order Parts  
Note: Discounts Are Subject To Change  
Fax your order in and qualify for a 2% Discount  
on Standard orders for all orders which include  
complete part numbers.*  
Order via Fax (Dealers Only)  
:
All customers are welcome to order parts via Fax.  
Domestic (US) Customers dial:  
1-800-6-PARTS-7 (800-672-7877)  
Note: Discounts Are Subject To Change  
Domestic (US) Dealers Call:  
1-800-427-1244  
Order via Phone:  
Non-Dealer Customers:  
International Customers should contact  
their local Multiquip Representatives for  
Parts Ordering information.  
Contact your local Multiquip Dealer for  
parts or call 800-427-1244 for help in  
locating a dealer near you.  
When ordering parts, please supply:  
❒
Specify Preferred Method of Shipment:  
❒
❒
❒
❒
❒
❒
Dealer Account Number  
✓
UPS/Fed Ex  
✓ DHL  
Dealer Name and Address  
■
■
Priority One  
Ground  
✓
Truck  
Shipping Address (if different than billing address)  
Return Fax Number  
Applicable Model Number  
■ Next Day  
■
Second/ThirdDay  
Quantity, Part Number and Description of Each Part  
All orders are treated asStandard Orders  
andwillshipthesamedayifreceivedprior  
to 3PM PST.  
WE ACCEPT ALL MAJOR CREDIT CARDS!  
MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07) — PAGE 7  
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RULES FOR SAFE OPERATION  
CAUTION:  
■
NEVERtouchthehotexhaustmanifold,  
muffler or cylinder.Allow these parts to  
cool before servicing engine or pump.  
Failure to follow instructions in this manual may  
lead to serious injury or even death! This  
equipment is to be operated by trained and  
qualified personnel only!This equipment is for  
industrial use only.  
The following safety guidelines should always be used when  
operating the MQ41TDHTrash Pump:  
■
■
HighTemperatures – Allow the engine to cool before adding  
fuel or performing service and maintenance functions. Contact  
with hot components can cause serious burns.  
GENERAL SAFETY  
■
DO NOT operate or service this equipment before  
readingthisentiremanual.  
The air-cooled diesel engine of this pump requires an  
adequate free flow of cooling air. Never operate the pump in  
any enclosed or narrow area where free flow of the air is  
restricted. If the air flow is  
■
■
This equipment should not be operated by persons under 18  
years of age.  
NEVER operate this equipment without proper  
protective clothing, shatterproof glasses, steel-toed  
boots and other protective devices required by the  
job.  
restricted it will cause serious  
damage to the pump or  
engine and may cause injury  
to people and property.  
Remember the pump's diesel  
engine gives off DEADLY  
gases.  
■
■
NEVER operate this equipment when not feeling  
well due to fatigue, illness or taking medicine.  
■
Always refuel in a well-ventilated area, away from sparks and  
open flames.  
NEVER operate this equipment under the  
influence or drugs or alcohol.  
■
Always use extreme caution when  
working with flammable liquids. When  
refueling, stop the engine and allow it to  
cool. DO NOT smoke around or near the  
machine. Fire or explosion could result from  
fuel vapors, or if fuel is spilled on a hot  
engine.  
■
NEVER use accessories or attachments, which are not  
recommended by Multiquip for this equipment. Damage to  
the equipment and/or injury to user may result.  
■
■
NEVER operate the pump/engine in an explosive atmosphere  
or near combustible materials. An explosion or fire could result  
causing severe bodily harm or even death.  
■
■
■
Manufacture does not assume responsinility for any accident  
due to equipment modifications.  
Whenever necessary, replace nameplate, operation and  
safety decals when they become difficult read.  
Topping-off to filler port is dangerous, as it tends to spill fuel.  
Always check the machine for loosened threads or bolts before  
starting.  
PAGE 8 —MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07)  
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RULES FOR SAFE OPERATION  
■
NEVER use accessories or attachments, which are not  
recommended by Multiquip for this equipment. Damage to  
the equipment and/or injury to user may result.  
■
■
Always make sure pump is correctly secured to the trailer.  
Check all supports attaching the pump to the trailer and make  
sure they are tight.  
■
■
NEVER pump volatile, flammable or low flash point fluids.  
These fluids could ignite or explode.  
Always make sure that the pump's trailer is placed on solid  
level ground so that it cannot slide or shift around, endangering  
workers. Place blocks under the trailer's bumper to make it  
level (prevents tipping), and use a chocked block underneath  
the wheels to prevents rolling. Also keep the immediate area  
free of bystanders.  
NEVER pump corrosive chemicals or water containing toxic  
substances. These fluids could create serious health and  
environmental hazards. Contact local authorities for  
assistance.  
■
HighTemperatures – Allow the engine to cool before adding  
fuel or performing service and maintenance functions. Contact  
with hot components can cause serious burns.  
■
NEVER open the priming plug when pump is hot. Hot water  
inside could be pressurized much like the radiator of an  
automobile. Allow pump to cool to the touch before loosening  
plug.  
Emergencies  
■
■
NEVER open the pump housing during operation or start the  
pump with the cover off.The rotating impeller inside the pump  
can cut or sever objects caught in it.  
■
Always know the location of the nearest fire extinguisher  
and first aid kit. Know the location of the nearest telephone.  
Also know the phone numbers of the nearest ambulance,  
doctor and fire department. This information will be  
invaluable in the case of an emergency.  
NEVER block or restrict flow from discharge hose. Remove  
kinks from discharge line before starting pump. Operation  
with a blocked discharge line can cause water inside pump to  
overheat.  
Maintenance Safety  
■
NEVER lubricate components or attempt service on a running  
machine.  
■
■
NEVER Run engine without air cleaner. Severe engine  
damage may occur.  
■
Always allow the machine a proper amount of time to cool  
before servicing.  
Check the air cleaner blockage indicator daily. If the rubber  
bellows is pulled inwards this indicates restricted air flow,  
replace air cleaner.  
■
■
Keep the machinery in proper running condition.  
Fix damage to the machine immediately and always replace  
broken parts.  
■
Always read, understand, and follow procedures in Hatz  
Engine Operator’s Manual before attempting to operate  
equipment.  
■
■
■
Dispose of hazardous waste properly.Examples of potentially  
hazardous waste are used motor oil, fuel and fuel filters.  
■
■
Always be sure the operator is familiar with proper safety  
precautions and operations techniques before using pump.  
DO NOT use food or plastic containers to dispose of  
hazardous waste.  
Always store equipment properly when it is not being used.  
Equipment should be stored in a clean, dry location out of the  
reach of children.  
DO NOT pour waste, oil or fuel directly onto the ground,  
down a drain or into any water source.  
■
■
Refer to the Hatz Engine Owner's Manual for engine  
technical questions or information.  
Always fill the pump casing with water before starting the  
engine. Failure to maintain water inside the pump housing  
will cause severe damage to the pump.  
■
In winter drain water from pump housing to prevent freezing.  
MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07) — PAGE 9  
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OPERATION AND SAFETY DECALS  
Machine Safety Decals  
The MQ41TDH CentrifugalTrash pump is equipped with a number of safety decals.These decals are provided for operator safety  
and maintenance information.The illustration below shows these decals as they appear on the machine. If any of these decals  
become unreadable, replacements can be obtained from your dealer.  
PAGE 10 —MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07)  
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MQ41TDH — SPECIFICATIONS  
TABLE 1. Engine Specifications  
Engine Make  
Engine Model  
Engine Type  
HATZ  
1D81Z  
Air Cooled 4-Stroke Diesel  
1
Number Of Cylinders  
Bore/Stroke  
88/85 mm  
Combustion Method  
Oil Grade  
Direct Fuel Injection  
See Table 3, pg 17  
.5 gal/1.9 liters  
Diesel  
Oil Capacity  
Fuel Type  
Fuel Tank Capacity  
Weight  
1.85 gal/7.0 liters  
91 kg/201 lbs  
Electric Start  
Starting Method  
TABLE 2. Pump Specifications  
MaximumPumping  
Capacity  
611 gpm(2, 313 lpm)  
MaximumSuction Lift*  
MaximumTotal Head  
MaximumPressure  
MaximumSolids  
25 FT. (7.6 meters)  
90 FT. (27 meters)  
38.96 psi  
2 in. (50 mm)  
Suction and Discharge  
Diameter  
4 in. (101 mm)  
48 x 36 x 46 in.  
(122 x 91 x142 cm)  
Dimensions (LxWxH)  
Weight  
200 lbs (90 kg.)  
* Based on pump operating at sea level. Maximumsuction lift will be less at higher altitudes.  
SOUND MEASUREMENTS  
The required sound specifications, per Appendix 1, paragraph 1.7.4.f of the EC-Machine Regulations,  
are defined as follows:  
The sound pressure level at the operator's location (L) = 87 dB (A)  
The sound power level (L) = 97 dB (A)  
These sound values are determine according to ISO 3744 for the sound power level (L) and ISO  
6081 for the sound pressure level (L) at the operator's location.  
The sound measurements were obtained with the unit operation on pavement at nominal speed.  
MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07) — PAGE 11  
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MQ41TDH — COMPONENTS  
Figure 1. Pump Components  
PAGE 12 —MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07)  
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MQ41TDH — GENERAL INFORMATION  
Pump Clean-out  
The MQ41TDH Trash Pump is a self-priming centrifugal trash  
pump powered by a 15 horsepower air-cooled four stroke HATZ  
diesel engine. Both the intake (suction) and discharge ports on  
the MQ41TDH incorporate a 4-inch diameter opening, which  
allows the pump to pump at a rate of approximately 611 gpm or  
2,313 lpm.  
The clean-out cover on the MQ41TDH has been design for easy  
removal that allows for easy access to the volute and impeller  
for cleaning and servicing.  
Spark Arresters  
State Health Safety Codes and Public Resources Codes specify  
that in certain locations spark arresters be used on internal  
combustion engines that use hydrocarbon fuels. A spark arrester  
is a device designed to prevent accidental discharge of sparks  
or flames from the engine exhaust. Spark arresters are qualified  
and rated by the United States Forest Service for this purpose.  
Trash Pump  
Trash pumps derive their name from their ability to handle a  
greater amount of debris and solids than standard centrifugal  
pumps.These pumps generally handle solids up to 1/2 the size  
of the discharge opening making them less likely to clog. Also  
trash pumps are capable of handling water with 25% solids by  
weight.  
In order to comply with local laws regarding spark arresters,  
consult the engine distributor or the local Health and Safety  
Administrator.  
The advantage of using a trash pump is that it can be quickly  
and easily disassembled in the field to remove debris in the  
event the pump becomes clogged.  
Mechanical Seal Lubrication  
Suction Lift  
The pump uses a water-cooled mechanical seal to prevent water  
from seeping into the engine. The passage of water through the  
pump casing lubricates the seal and prevents it from overheating.  
Never operate the pump without water in the casing as this will  
cause the seal to fail.  
This pump is intended to be used for dewatering applications  
and is capable of suction lifts up to 25 feet at sea level. For  
optimal suction lift performance keep the suction hose or line as  
short as possible. In general always put the pump as close to the  
water as possible.  
Engine Safety  
Internal combustion engines present special hazards during  
operation and fueling! Failure to follow the safety guidelines  
described in the Rules for Safe Operation section of this manual  
and the Hatz Engine Operator's Manual could result in severe  
injury or death.  
Pump Support  
The pump should always be placed on solid stationary ground  
in a level position.To prevent the trailer from tipping, place blocks  
under the trailer's bumper.In addition, place chock blocks behined  
each wheel to prevent the trailer from rolling.  
Accessories  
NEVER place the pump on soft soil. The suction hose or pipe  
connection should always be checked for tightness and leaks. A  
small suction leak in the hose or fittings could prevent the pump  
from priming.  
.
Multiquip offers a complete line of fittings, hoses, and clamps to  
properly connect the pump to match various job conditions. Refer  
to the part list in section 2 of this manual for a complete list of  
accessories  
Elevation  
Elevations over 3,000 feet will effect the performance of the  
pump. Due to less atmospheric pressure at higher altitudes,  
pumps DO NOT have the priming ability that they have at sea  
level.  
A general rule of thumb is that for every 1,000 feet of elevation  
above sea level a pump will lose one foot of priming ability.  
For example, in Flagstaff, Arizona where the elevation is  
approximately 7,000 feet, the pump would have a suction lift of  
only 18 feet rather than the 25 feet at sea level.  
MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07) — PAGE 13  
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MQ41TDH — APPLICATION  
Figure 2 below shows a typical application using the MQ41TH Centrifugal Trash pump. Please note that this  
pump is intended for the removal of clean water and water containing some debris and solids. Maximum size  
of solids should not exceed 2 inches (50 mm) in diameter. DO NOT set strainer on bottom of water bed.  
Placing the strainer above the water bed will prevent the pump from drawing in excessive amounts of sand  
and foreign debris.  
Figure 2. Pump Application  
PAGE 14 —MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07)  
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MQ41TDH — PRE-SETUP (PUMP)  
Before Starting  
NOTE  
1. Read safety instructions at the beginning of manual.  
Suction and discharge hoses are available  
from Multiquip. Contact your nearest dealer  
for more information.  
2. Placepumpasneartowateraspossible,onafirmflat,level  
surface.  
3. Toprimepump,removefillcap(Figure1)andfillpumpcase  
with water. If the pump case is not filled with water before  
starting, it will not begin pumping.  
5. The discharge hose is usually a collapsible (thin-walled)  
hose, however if a thin-walled discharge hose is not avail-  
able, a rigid suction hose can be substituted in its place.  
NOTE  
6. Make sure the suction strainer (Figure 1) is clean and  
securely attached to the water end of the suction hose. The  
strainer is designed to protect the pump by preventing large  
objects from being pulled into the pump.  
Pump case must be filled with water  
before using pump. Otherwise pump will  
not be able to begin pumping.  
WARNING  
CAUTION:  
The strainer should be positioned so it will  
remain completely under water.Running the  
pump with the strainer above water for long  
periods can damage the pump.  
DO NOT open fill cap if pump  
is hot! Water inside may be  
under pressure.  
CAUTION:  
DO NOT pump flammable fluids, corrosive  
chemicals or fluids containing toxic substances.  
These fluids can create potentially dangerous  
health and environmental hazards. Contact  
local authorities for assistance.  
4. Checkforleaksbetweenpumpandengine.Ifwaterisleaking  
between the pump and engine housing, the seal inside the  
pumpmaybewornordamaged.Continued operationofthe  
pumpisnot recommended.Furtherusageofthe pumpunder  
theseconditionsmaycauseseverewaterdamagetoengine.  
Hoses and Clamps  
1. Check that all hoses are securely attached to the pump.  
Make certain suction hose (Figure 1) does not have any air  
leakage.Tighten hose clamps and couplings as required.  
2. Itisrecommendedthat 2 clampsbeusedwhensecuringthe  
suction hose to the inlet side of the pump.  
3. Remember suction hoses must be rigid enough not to  
collapse when the pump is in operation.  
4. Check that the discharge hose (Figure 1) is not restricted.  
Place hose so that it lays as straight as it is possible on the  
ground. Remove any twists or sharp bends from hose which  
may block the flow of water.  
MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07) — PAGE 15  
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MQ41TDH — INITIAL START-UP (ENGINE)  
4. If engine oil is low, fill engine crankcase with lubricating  
oil through filler hole (Figure 3), but do not overfill.  
CAUTION :  
DO NOT attempt to start the engine unless  
5. The oil listed inTable 3 is recommended to ensure better  
the pump has previously been primed with  
water. Severe pump damage will occur if  
pump has not been primed.  
engine performance. Use class CD or higher grade motor  
oil.  
Engine Oil  
1. Make sure pump/engine is on level ground.  
2. Pull the engine oil dipstick (Figure 3) from its holder.  
Table 3. Oil Selection Chart  
OIL: SAE  
F
C
122  
104  
86  
50  
40  
30  
20  
10  
0
ENGINE OIL  
DIPSTICK  
68  
50  
HOLDER  
32  
-14  
-4  
-10  
-20  
-30  
-40  
-22  
-40  
Figure 3. Dipstick Location  
3. Verify that oil level (Figure 4) is maintained between the  
two notches on the dipstick.  
Figure 4. Engine Oil Dipstick  
PAGE 16 —MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07)  
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MQ41TDH — INITIAL START-UP (ENGINE)  
Fuel  
Speed Control Lever  
1. Set the Speed Control Lever (Figure 5) to a position  
CAUTION :  
half way between start and stop.  
Never fill the fuel tank while the engine is  
running or in the dark. Fuel spillage on a  
hot engine can cause a fire or explosion.  
If fuel spillage occurs, wipe up the spilled  
fuel completely to prevent fire hazards.  
NOTE  
Selecting a lower engine speed will reduce  
smoke when starting.  
1. Determine if engine fuel is low by removing fuel cap  
and looking inside tank. Fill with diesel fuel. DO NOT  
fill the tank beyond capacity.  
CAUTION :  
DO NOT smoke while refueling, motor  
fuels are highly flammable and can be  
dangerous if mishandled.  
2. Handle fuel in a safety container. If the container does  
not have a spout use a funnel.  
3. Pay attention to the fuel tank capacity when replenishing  
fuel. Refer to the fuel tank capacity listed on page 11,  
Specification Table1.  
4. Tighten fuel tank cap securely after filling.  
Figure 5. Speed Control Lever  
MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07) — PAGE 17  
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MQ41TDH — INITIAL START-UP (ENGINE)  
Control Box  
Operation  
1. Insert ignition key into ignition switch located on control  
box (Figure 6)  
1. The MQ41TDH trash pump should begin pumping water  
within a minute depending on the length of suction hose  
and height the pump is above water.  
NOTE  
Longer suction hoses will require more time  
for the pump to begin pumping water.  
2. If pump does not begin to pump water after a few  
minutes, check for loose connections or air leaks in  
suction hose. Make sure there is water in the pump end  
and strainer is not clogged with debris, reference pump  
troubleshooting guide on page 25.  
Figure 6. Control Box  
2. Turn ignition key to position I, and verify that charge  
indicator light comes ON.  
Engine Shut-Down  
3. Continue turning the ignition key through positions II  
and III.  
1. Slow down the engine and allow to cool for at least 2  
minutes. Place speed control lever in the stop position  
and listen for the engine to stop running.  
4. Release ignition key as soon as engine starts, and  
verify that ignition key automatically returns back to  
position I.  
CAUTION :  
5. Verify charge indicator light goes OFF immediately when  
NEVER attempt to stop the engine by  
moving the decompression lever. Always  
use the speed control lever to stop engine.  
engine is started.  
6. If charge indicator remains lit, increase engine speed  
until light goes off. When the charge indicator light goes  
off, it can then be assumed that the charging system is  
working correctly .  
2. Turn the ignition key to the 0 position and remove the  
key from the ignition switch.  
7. If the charge light remains on while the engine is running,  
refer to engine troubleshooting guide (pages 25-26) or  
the Hatz EngineInstructionManual.  
CAUTION :  
8. Move speed control lever to full start position for  
maximum engine speed. (See Fig. 5)  
When pump is not in use, keep ignition  
starting key in a safe place, out of the  
reach of unauthorized persons.  
PAGE 18 —MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07)  
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MQ41TDH — MAINTENANCE  
General Inspection  
Changing Oil Filter  
The following maintenance guidelines are intended to assist Change the engine oil filter (Figure 8) and gasket after 250  
the operator in preventative maintenance. For a more detailed hours of operation. To gain access to the oil filter element,  
maintenance schedule refer to the Hatz Engine Instruction unscrew the oil filter cap and replace the oil filter element.  
Manual supplied with the pump.  
Make sure to tighten oil filter cap securely.  
At least daily or prior to each use, the MQ41TDH trash  
pump cover should be removed, and the pump should be  
cleaned and inspected for deficiencies. Check for loose,  
missing or damaged nuts, bolts or other fasteners. Also check  
for fuel or oil leaks, and remove any debris stuck in the  
impeller or volute.  
Check Oil Level  
Check the engine crankcase oil level prior to each use, or  
when the fuel tank is filled. Make sure the pump is level.The  
oil level must be between the two notches on the dipstick  
as shown in Figure 7.  
OIL DIPSTICK  
Figure 8. Oil Filter Element  
SAFE OPERATING  
Fuel Filter  
OIL LEVEL  
MAX  
Replace fuel filter (Figure 9) and drain fuel tank to remove  
water and sediment every 500 hours. If the purity of the fuel  
being used is of lesser quality replace fuel filter more often  
as needed.  
ADD ENGINE OIL  
MIN  
Figure 7. Engine Oil Dipstick  
Changing Engine Oil  
Change engine oil after first 25 hours of operation. Drain and  
refill engine crankcase with the correct type and amount oil  
(referenceTable 3) after 250 hours of operation hours or once  
a week thereafter.  
Figure 9. Fuel Filter  
When draining engine crankcase oil, place oil into a suitable  
container while engine is still warm. Replace the drain plug  
tightly. Add oil through the filler hole.  
NOTE  
When re-installing fuel filter, please  
note the arrows indicating the direction  
of fuel flow.  
MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07) — PAGE 19  
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MQ41TDH — MAINTENANCE  
Air Filter Blockage Indicator  
To clean or replace air filter loosen the wing nut on the air  
filter housing (Figure 11), remove the cover and take out air  
filter cartridge. If only cleaning of the air filter is desired blow  
through the air filter cartridge from the inside, moving a jet  
of dry compressed air up and down until all dust is removed.  
To test the air cleaner blockage indicator (Figure 10) run the  
engine at full speed for a short time. If the rubber bellows is  
pulled inwards (down), and the green rubber band cannot be  
seen, this implies that maintenance work is required on the  
air cleaner. Clean or replace air cleaner.  
AIR FILTER  
CANNISTER  
CLEAN USING  
COMPRESSED  
DRY AIR  
AIR FILTER  
CARTRIDGE  
Figure 10. Air Filter Blockage Indicator  
WING NUT  
Figure 11. Air Filter  
Air Filter Cartridge  
If engine is operating in very dusty and dry grass conditions.  
A clogged air filter will result in high fuel consumption, loss  
of power and excessive carbon buildup in the combustion  
chamber.Clean air filter daily.Remember if operating in dusty  
conditions, check the rubber bellows on the air blockage  
indicator several times a day.  
CAUTION :  
DO NOT blow high pressure, high velocity  
compressed air thru the air filter cartridge.The  
high velocity air will damage the filter, which  
will then allow contaminates to pass into the  
engine.  
PAGE 20 —MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07)  
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MQ41TDH — MAINTENANCE  
Pump Vacuum Test  
5. Check and make sure that there are no air leaks between  
the vacuum tester and the inlet port on the pump. If air  
leaks are present reseat vacuum tester.  
CAUTION :  
6. Run the pump for a few minutes while monitoring the  
vacuum guage. If the guage indicates a reading between  
-25 and -20 in. Hg. (inches of mecury) then it can be  
assumed that the pump is working correctly.  
DO NOT attempt to start the engine unless the  
pump has previously been primed.with water.  
Severe pump damage will occur if pump has  
not been primed.  
7. If the vacuum tester guage indicates a reading  
below -20 in. Hg, it can then be assumed that the pump  
is not functioning correctly, and corrective action needs  
to be taken.  
To perform the pump vacuum test do the following:  
1. Remove the pump fill cap, and fill the pump with water.  
2. Start the engine as outlined in the initial strat-up section,  
and wait for the pump to begin pumping.  
6. To test the flapper valve, shut down the engine. The  
vacuum tester should remain attached to the pump  
suction inlet port by vacuum. This indicates the pump's  
flapper valve is seating properly to hold water in the  
suction hose when the engine is stopped.This prevents  
backflow and allows for faster priming when the engine  
is restarted.  
3. As shown in Figure 12 (next page), place a water hose  
inside the discharge opening of the pump, and turn on  
the water.This flow of water into the discharge opening  
will prevent the pump from running dry.  
4. Place the Pump Vacuum Tester (P/N 7000030) over  
the pump inlet opening (Figure 15) with the vacuum guage  
facing upwards. It may be necessary to apply a small  
amount of water around the rubber seal of the vacuum  
tester to make a good suction fit.  
NOTE  
25 in. Hg (inches of mecury) translates  
into 25 feet of lift at sea level.  
MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07) — PAGE 21  
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MQ41TDH — MAINTENANCE  
Figure 12. Pump Vacuum Tester  
PAGE 22 —MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07)  
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MQ41TDH — PUMP STORAGE  
MQ41TDH — PREPARATIO  
Pump Storage  
For storage of the pump for over 30 days, the following is  
required:  
z
z
Drain the fuel tank completely.  
Run the engine until the fuel in the injection system is  
completely consumed.  
z
Completely drain used oil from the engine crankcase  
and fill with fresh clean oil, then follow the procedures  
described in the engine manual for engine storage.  
z
z
Remove the drain plug from the pump and drain out any  
water from left in the housing.  
Remove the pump cover and clean inside of pump  
housing. Coat inside of pump housing with a light film of  
oil to reduce corrosion. A spray can of oil works well for  
this application.  
z
z
Cover suction and discharge ports with duct tape to  
prevent any foreign matter from falling into pump.  
Cover pump and engine with plastic covering or  
equivalent and store in a clean, dry place.  
MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07) — PAGE 23  
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MQ41TDH — TROUBLESHOOTING (PUMP)  
Practically all breakdowns can be prevented by proper handling and maintenance inspections, but in the event of a  
breakdown, use the table shown for pump troubleshooting guide (Table 4)and the engine troubleshooting guide (Table 5).  
If the problem cannot be remedied, consult our company's business office or service plant.  
TABLE 4 PUMP TROUBLESHOOTING  
SYMPTOM  
POSSIBLE PROBLEM  
Not enough priming water in the housing?  
Engine speed too low?  
SOLUTION  
Add water.  
Increase throttle.  
Clean strainer.  
Strainner plugged?  
Suction hose damaged?  
Replace or repair hose, and clamps  
Check that fittings are tight and properly sealed.  
Move pump closer to water.  
Air leak at suction port?  
Pump does not take on water.  
Pump is located too high above water line?  
Debris collecting in pump housing?  
Clean pump housing.  
Adjust clearance by adding shims or replace impeller.  
Min. .006" - Max. .020"  
Too much distance between impeller and volute.  
Water leaking out weep hole between pump and Check condition of mechanical seal and gaskets,  
engine?  
between pump end and engine housing.  
Engine speed too low?  
Increase throttle speed.  
Pump takes in water, little or no Suction strainer partially plugged?  
Clean strainer.  
discharge.  
Impeller/Volute worn?  
Adjust clearance by adding shims or replace  
impeller/volute  
Tighten, replace or add clamp. (Keep extra seals on  
pump)  
Fittings/clamps are not sealed properly?  
Suction hose leaks at inlet.  
Hose diameter is too large?  
Use smaller diameter hose or replace hose.  
Check pressure, add additional clamp.  
Check hose.  
Pressure too high?  
Discharge does not stay on  
coupling.  
Hose kinked or end blocked?  
Impeller jammed or blocked?  
Open pump cover and clean dirt and debris frominside  
housing.  
Impeller does not turn: pump is  
hard to start.  
Adjust clearance by removing shimfrombehind  
impeller.  
Impeller and volute binding?  
Defective engine?  
See Hatz Diesel Engine Owner's Manual.  
PAGE 24 —MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07)  
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MQ41TDH — TROUBLESHOOTING (ENGINE)  
TABLE 5 ENGINE TROUBLESHOOTING  
SYMPTON  
POSSIBLE PROBLEM  
SOLUTION  
Speed control lever is in "STOP" position?  
STOP solenoid is in the "STOP" position?  
Set speed control lever to "START" position.  
Set stop solenoid to the "START" position.  
Adjust and lubricate if necessary.  
No Fuel reaching injection pump?  
Defective fuel pump?  
Add fuel. Check entire fuel system.  
Replace fuel pump.  
Fuel filter clogged?  
Replace fuel filter and clean tank.  
Replace or repair fuel line.  
Engine will not start or start is  
delayed, although engine can be  
turned over.  
Faulty fuel supply line?  
Check piston, cylinder and valves. Adjust or  
repair per engine repair manual.  
Compression too low?  
Repair or replace injector in accordance with  
engine repair manual.  
Fuel injector not working correctly?  
Oil pressure too low?  
Check engine oil pressure.  
Comply with cold starting instructions and  
proper oil viscosity.  
Low starting temperature limit exceeded  
Defective battery?  
Charge or replace battery.  
Check whether clear (not turbid) fuel emerges  
fromthe fuel line (detach frominjection pump).  
If the fuel is turbid or separated, warmup the  
engine or drain the complete fuel supply  
Fuel separates has inadequate resistance to  
low temperatures?  
At low temperatures engine will  
not start.  
system. Refuel with winter grade diesel fuel.  
Refill engine crankcase with correct type of oil  
for winter environment.  
Engine oil too thick?  
Defective battery?  
Replace battery.  
Throttle lever in STOP position?  
Fuel filter blocked?  
Reposition throttle lever to RUN position.  
Replace fuel filter.  
Engine fires but stops soon as  
starter is switched off.  
Fuel supply blocked?  
Electrical problemat fuel solenoid?  
Fuel tank empty?  
Check the entire fuel system.  
Repair using #7 wire.  
Add fuel.  
Fuel filter blocked?  
Replace fuel filter.  
Engine stops by itself during  
normal operation.  
Defective fuel pump?  
Replace fuel pump.  
Mechanical oil pressure shutdown sensor stops Add oil. Replace low oil shutdown sensor if  
the engine due to low oil? necessary.  
MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07) — PAGE 25  
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MQ41TDH — TROUBLESHOOTING (ENGINE)  
TABLE 5 ENGINE TROUBLESHOOTING (CONTINUED)  
SYMPTON  
POSSIBLE PROBLEM  
Fuel tank empty?  
SOLUTION  
Replace fuel filter.  
Fuel filter clogged?  
Replace fuel filter.  
Fuel tank venting is inadequate?  
Leaks at pipe unions?  
Ensure that tank is adequately vented.  
Low engine power, output and  
speed.  
Check threaded pipe unions tape and tighten  
unions a required.  
Speed control lever does not remain in selected See engine manual for corrective action.  
position?  
Engine oil level too full?  
Air filter blocked?  
Correct engine oil level?  
Clean or replace air filter.  
Adjust valves per engine specification.  
See engine manual.  
Low engine power output and  
low speed, black exhaust smoke.  
Incorrect valve clearances?  
Malfunction at injector?  
Drain off engine oil down to uppermark on  
dipstick.  
Too much oil in engine crankcase?  
Air-cooled diesel engine runs  
very "HOT". Cylinder head  
overheat, telltale lamp comes on  
(option)  
Clean cooling air system, remove shrouds and  
cooling fin areas.  
Entire cooling air systemcontaminated blocked?  
Inadequate sealing at air guide plates or capsule Check that air guide plates and enclosure  
elements? elements are all present and make a tight seal.  
PAGE 26 —MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07)  
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NOTE PAGE  
MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07) — PAGE 27  
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MQ41TDH — EXPLANATION OF CODE IN REMARKS COLUMN  
The following section explains the different symbols and  
QTY. Column  
remarks used in the Parts section of this manual. Use the help  
numbers found on the back page of the manual if there are any  
questions.  
Numbers Used - Item quantity can be indicated by a  
number, a blank entry, or A/R.  
A/R (As Required) is generally used for hoses or other parts  
that are sold in bulk and cut to length.  
The contents and part numbers listed in the parts section are  
subject to change without notice. Multiquip does not  
guarantee the availibility of the parts listed.  
A blank entry generally indicates that the item is not sold  
separately. Other entries will be clarified in the “Remarks”  
Column.  
REMARKS Column  
Sample Parts List:  
Some of the most common notes found in the “Remarks”  
Column are listed below. Other additional notes needed to  
describe the item can also be shown.  
NO. PART NO. PART NAME  
QTY. REMARKS  
1
2
2
3
4
12345  
BOLT ...................... 1 ......INCLUDES ITEMS W/  
WASHER, 1/4 IN. .............NOT SOLD SEPARATELY  
WASHER, 3/8 IN. ... 1 ......MQ-45T ONLY  
HOSE ................... A/R ....MAKE LOCALLY  
BEARING ............... 1 ......S/N2345B AND ABOVE  
*
*
*
12347  
12348  
12349  
Assembly/Kit - All items on the parts list with the same  
unique symbol will be included when this item is purchased.  
Indicated by:  
“INCLUDES ITEMS W/(unique symbol)”  
NO. Column  
Unique Symbols - All items with same unique symbol  
Serial Number Break - Used to list an effective serial  
number range where a particular part is used.  
( , #,  
+
, %, or >) in the number column belong to the same  
*
assembly or kit, which is indicated by a note in the “Remarks”  
column.  
Indicated by:  
“S/N XXXXX AND BELOW”  
“S/N XXXX AND ABOVE”  
“S/N XXXXTO S/N XXX”  
Duplicate Item Numbers - Duplicate numbers indicate  
multiple part numbers are in effect for the same general  
item, such as different size saw blade guards in use or a  
part that has been updated on newer versions of the same  
machine.  
Specific Model Number Use - Indicates that the part is  
used only with the specific model number or model number  
variant listed. It can also be used to show a part is NOT  
used on a specific model or model number variant.  
When ordering a part that has more than one  
item number listed, check the remarks column  
for help in determining the proper part to order.  
Indicated by:  
“XXXXX ONLY”  
“NOT USED ON XXXX”  
“Make/Obtain Locally” - Indicates that the part can be  
purchased at any hardware shop or made out of available  
items. Examples include battery cables, shims, and certain  
washers and nuts.  
PART NO. Column  
Numbers Used - Part numbers can be indicated by a  
number, a blank entry, orTBD.  
“Not Sold Separately” - Indicates that an item cannot be  
purchased as a separate item and is either part of an  
assembly/kit that can be purchased, or is not available for  
sale through Multiquip.  
TBD (To Be Determined) is generally used to show a part  
that has not been assigned a formal part number at time of  
publication.  
A blank entry generally indicates that the item is not sold  
separately or is not sold by Multiquip. Other entries will be  
clarified in the “Remarks” Column.  
PAGE 28 —MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07)  
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MQ41TDH — SUGGESTED SPARE PARTS  
MQ41TDH 1 TO 5 UNITS WITH HATZ  
1D81Z ENGINE  
1 to 5 Units  
Qty.  
P/N  
Description  
1
2
1
3
3
3
1
2
1
1
1
4
3
4
1
5
5
5
5
1
1
0482200280  
0806124035  
0811303554  
0852824230  
0852854230  
0480350300  
4412000030  
0489312820  
0489312960  
4412000130  
1401350350  
0631211100  
0480350300  
2601000220  
0742064100  
01493000  
O RING (MECHNAICAL SEAL SLEEVE)  
MECHANICAL SEAL  
MECHANICAL SEAL SLEEVE  
ADJUST LINER  
ADJUST LINER  
O-RING  
IMPELLER  
O RING(CASING,VOLUTE)  
O RING (DRAIN COVER)  
VOLUTE CASING  
CHECKVALVE  
DRAIN CAP  
O RING, DRAIN CAP  
DRAIN COVER KNOB  
STEEL STRAINER  
AIR FILTER  
OIL FILTER  
FUEL FILTER  
KEY, IGNITION SWITCH  
OIL PRESSURE SWITCH  
TEMPERATURE SWITCH  
01480000  
50478800  
50345300  
40021300  
50268600  
NOTE  
Part numbers on this Suggested  
Spare Parts List may supercede/  
replace the P/N shown in the text  
pages of this book.  
MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07) — PAGE 29  
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MQ41TDH — NAME PLATE AND DECALS  
NAMEPLATE AND DECALS  
1
2
PUMP  
4
3
5
SKID  
PAGE 30 —MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07)  
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MQ41TDH — NAME PLATE AND DECALS  
NAMEPLATE AND DECALS  
NO  
PART NO  
DCS02  
7005000  
5349  
PART NAME  
QTY.  
REMARKS  
1
DECAL: CAUTION  
DECAL: DO NOT RUN DRY  
DECAL: MULTIQUIP  
PLATE, SERIAL NO .................. 1 .................CONTACT MQ SERVICE DEPT. W/MODEL & S/N  
DECAL: CAUTION ..................... 1 .................REPLACES 920202510  
KIT, DECAL................................ 1 .................INCLUDES ITEMS W/  
1
1
1
*
*
2
*
3
4
5
920203290  
DCLMQ41THD  
*
6
*
SEE DECAL ILLUSTRATIONS ON PAGE 10  
MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07) — PAGE 31  
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MQ41TDH — PUMP ASSY.  
PUMP ASSY.  
PAGE 32 —MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07)  
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MQ41TDH — PUMP ASSY.  
PUMP ASSY.  
NO  
2
PART NO  
PART NAME  
QTY. REMARKS  
4419000020  
4412000030  
SHAFT 1D81Z  
0489312820  
0482200280  
0521070740  
0806124035  
0811303554  
4412201240  
0852824230  
0852834230  
0852854230  
0151151230  
0451250120  
0205450120  
0131151060  
0451250100  
0105051225  
014208025  
CASING COVER ............................................. 1 ...... REPLACES 4412000020  
IMPELLER ....................................................... 1 ...... REPLACES 4110030  
7
10  
13  
15  
19  
20  
21  
22  
23  
23  
23  
26  
27  
28  
29  
30  
31  
34  
35  
"O-RING" (CASING VOLUTE) ........................ 1 ...... REPLACES 4110134  
"O-RING" (MECHANICAL SEAL SLEEVE) ..... 1 ...... REPLACES 4115204  
KEY .................................................................. 1 ...... REPLACES 6100103  
MECHANICAL SEAL (CERAMIC-CARBON) 1 ...... REPLACES 0801124035 & 0801224035  
MECHANICAL SEAL SLEEVE ........................ 1 ...... REPLACES 4115210  
IMPELLER WASHER....................................... 1 ...... REPLACES 6000033  
SHIM 42X30 MM X .02 MM.............................. 1 ...... REPLACES 4118110  
SHIM 42X30 MM X .03 MM.............................. 1 ...... REPLACES 4118110  
SHIM 42X30 MM X .05 MM.............................. 1 ...... REPLACES 4118110  
STUD BOLT M12 X 45 X 15 X 20 ................... 18 .... REPLACES 4004512  
LOCK WASHER .............................................. 15 .... REPLACES 4001202  
NUT, M12 ........................................................ 14 .... REPLACES 1501201  
SCREW CASING COVER  
LOCK WASHER  
BOLT (IMPELLER)  
ALLENHEAD BOLT, 8 X 25 - 1.25MM  
LOCK WASHER, 8MM  
8
7
1
4
4
030208200  
MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07) — PAGE 33  
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MQ41TDH — PUMP ASSY. (CONTINUED)  
PUMP ASSY. (CONTINUED)  
PAGE 34 —MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07)  
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MQ41TDH — PUMP ASSY. (CONTINUED)  
PUMP ASSY. (CONTINUED)  
NO  
1
PART NO  
PART NAME  
QTY.  
REMARKS  
4412000010  
4412000170  
1414000090  
1247100250  
4412000130  
2601000220  
1401350350  
1401330360  
0489312820  
0489312960  
0480350300  
0631211100  
0631211100  
0141050825  
0451250080  
0151151230  
0451250120  
0205450120  
0105051065  
0451250100  
0105091025  
0105091020  
CASING ........................................................... 1 ....... REPLACES 4110010  
DRAIN COVER ................................................ 1 ....... REPLACES 4110170  
SUCTION/DISCHARGE PORT ...................... 2 ....... REPLACES 4000090  
DRAIN COVER HANDLE ................................ 2 ....... REPLACES 2010190  
VOLUTE CASING ........................................... 1 ....... REPLACES 4110130  
DRAIN COVER KNOB ..................................... 4 ....... REPLACES 4110171  
3
4
6
8
9
11  
12  
13  
14  
16  
17  
18  
24  
25  
26  
27  
28  
29  
30  
32  
33  
CHECK VALVE  
1
DISCHARGE PORT GASKET ........................ 1 ....... REPLACES 4000094  
O-RING (CASING, VOLUTE) .......................... 1 ....... REPLACES 4110134  
O-RING (DRAIN COVER) ............................... 1 ....... REPLACES 4110174  
O-RING, DRAIN CAP ...................................... 3 ....... REPLACES 1506064  
FILL/DRAIN CAP ............................................. 1 ....... REPLACES 1506060  
DRAIN CAP...................................................... 2 ....... REPLACES 1506060  
SCREW (DRAIN COVER HANDLE) ............... 4 ....... REPLACES 2018025  
LOCK WASHER .............................................. 4 ....... REPLACES 150802  
STUD BOLT, M12 X 45 X 15 X 20 ................... 18 ..... REPLACES 4004512  
LOCK WASHER, M12 ..................................... 15 ..... REPLACES 4001202  
NUT,M12 .......................................................... 14 ..... REPLACES 1501201  
BOLT (CASING COVER)  
6
LOCK WASHER .............................................. 12 ..... REPLACE S2001002  
BOLT (VOLUTE CASING) .............................. 2 ....... REPLACES 4111025  
BOLT (VOLUTE CASING)  
1
MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07) — PAGE 35  
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MQ41TDH — SKID ASSY.  
SKID ASSY.  
PAGE 36 —MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07)  
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MQ41TDH — SKID ASSY.  
SKID ASSY.  
NO  
1
PART NO  
PART NAME  
QTY. REMARKS  
0742064100  
030210250  
3019091  
3019092  
6109180  
STRAINER STEEL  
WASHER SPRING 10MM  
NUT  
1
7
2
6
8
4
8
4
4
2
4
1
2
3
4
WASHER 3/8  
WASHER SPRING  
BOLT 12x25T  
5
6
012212025  
020310080  
6109160  
7
NUT M10 HEX NUT Zn PLATED  
NUT  
8
9
6109210  
BOLT  
10  
11  
12  
13  
14  
15  
6109108  
BOLT BATTERY HOLD DOWN  
SPACER  
4419200580  
6109100  
HOLD DOWN BATTERY  
0723302546  
6119102  
SHOCK MOUNT ............................................. 6 ...... REPLACES 030216400  
LIFTING BAIL  
PUMP & ENGINE BASE  
1
1
6119101A  
MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07) — PAGE 37  
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MQ41TDH —TRAILER -10 ASSY.  
TRAILER-10 ASSY.  
PAGE 38 —MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07)  
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MQ41TDH —TRAILER -10 ASSY.  
TRAILER-10 ASSY.  
NO  
1
PART NO  
0205  
PART NAME  
QTY.  
8
REMARKS  
SCREW, HHC 3/8-16 x 1  
2
10019  
10133  
19103  
2548  
NUT, NYLOC 10-32  
2
3
NUT, NYLOC 3/8-16  
8
4
REFLECTOR, AMBER STICK-ON  
CLAMP, CABLE  
2
5
1
6
4001  
WASHER, FLAT, 3/8 PLTD STD.  
SCREW, RHM 10-32 x 1/2  
TIE, SELF-LOCKING  
16  
2
7
5065  
8
60101  
9315  
6
9
DECAL, TRLR-10  
1
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
9500  
FRAME, TRLR W/A  
1
19102  
9502  
HITCH W/A, BALL  
1
SCREW, HHC 5/8-11 x 4-1/2 GR8  
NUT, NYLOC 5/8-11  
2
9503  
2
9504  
JACK, SWIVEL W/WHEEL (COMPLETE)  
FENDER, 8x30x13, (TRLR-10, -50)  
AXLE & SPRING ASSY.  
TIRE/WHL P155 80D13 BLACK RIM  
SCREW, TEK 12 x 3/4 SELF TAP  
KIT, LIGHT - TRAILER  
1
9505  
2
9506  
1
9508  
2
9509  
1
9510  
1
9512  
PLUG, WIRING  
LIGHT ASSY., LICENSE PLATE  
WHEEL LUG NUT  
6
9514  
1
1U1304  
16  
MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07) — PAGE 39  
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MQ41TDH —TRAILER -1 KIT ASSY.  
TRAILER -1 ASSY.  
CAUTION :  
NEVER use the Trailer-1 for "HIGHWAY"  
towing purposes. This trailer is intended for  
jobsite towing ONLY!  
PAGE 40 —MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07)  
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MQ41TDH —TRAILER -1 KIT ASSY.  
TRAILER -1 ASSY.  
NO  
1
PART NO  
6119102  
6109210  
6109160  
6109180  
6109117  
6109104  
6109146  
0183  
PART NAME  
QTY.  
1
REMARKS  
LIFTING BAIL  
2
CAP SCREW  
12  
12  
12  
1
3
NUT, HEX  
4
WASHER, SPRING  
AXLE AND HUB ASSY.  
PIPE STAND  
5
6
1
7
LOCATING PIN  
COTTER PIN  
WHEEL LUG NUTS  
TOW BAR COUPLER  
PUMP & ENGINE BASE  
1
8
1
9
1U1304  
6109105  
6119101A  
16  
1
10  
11  
1
MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07) — PAGE 41  
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MQ41TDH —WHL-2 KIT ASSY.  
WHL-2 KIT ASSY.  
PAGE 42 —MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07)  
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MQ41TDH —WHL-2 KIT ASSY.  
WHL-2 KIT ASSY.  
NO  
2
PART NO  
6109170  
2010176  
6109210  
8151  
4119149  
4119208  
6109160  
6119102  
6109180  
4119102  
4119103  
PART NAME  
WASHER, SPRING  
SPLIT PIN  
CAP SCREW  
WASHER, FLAT, 3/4 IN.  
TIRE/WHEEL  
WASHER, FLAT  
NUT  
QTY.  
REMARKS  
4
2
4
5
12  
2
6
7
2
4
8
9
12  
1
10  
11  
12  
13  
LIFTING BAIL  
WASHER, SPRING  
HANDLE  
4
1
AXLE  
1
MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07) — PAGE 43  
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MQ41TDH —TNKZZ FUELTANK ASSY. (OPTIONAL)  
TNKZZ FUEL TANK ASSY. (OPTIONAL)  
3
TO ENGINE  
RETURN  
LINE  
1
1
13  
8
9
4
2
6
8
12  
7
2
10  
5
11  
8
7
TO FUEL PUMP  
10  
NOTES:  
1
2
CAP IS INCLUDED WITH TANK.  
IF A GAP EXISTS BETWEEN THE  
TANK BRACKET AND THE THE  
TANK SHIM USING P/N 6109170.  
PAGE 44 —MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07)  
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MQ41TDH —TNKZZ FUELTANK ASSY. (OPTIONAL)  
TNKZZ FUEL TANK ASSY. (OPTIONAL)  
NO  
1
PART NO  
34426  
PART NAME  
QTY.  
REMARKS  
ELBOW BRASS 3/16 X 1/8NPT  
HOSE, FUEL 1/4 INCH DIAMETER  
HOSE FUEL, 5/16 INCH  
TANK  
1
2
6635  
60 IN.  
3
6636  
16 IN.  
4
TNK9120  
TNK9123  
TNK9124  
030210250  
3019092  
6109170  
020310080  
2101030  
84454  
1
1
5
TANK BRACKET (LEFT)  
TANK BRACKET (RIGHT)  
WASHER, SPRING  
WASHER 3/8  
6
1
7
8
8
12  
12  
8
9
WASHER  
10  
11  
12  
13  
NUT, HEX M1O ZN PLATED  
BOLT, HEX 10 X 30  
ELBOW BRASS 1/4 MALE NPT X 5/16  
BOLT  
4
1
2001040  
4
MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07) — PAGE 45  
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HATZ 1D81Z ENGINE — CRANKCASE ASSY.  
CRANKCASE ASSY.  
LETTERS IN BOLD INDICATE TYPE OF BONDING ADHESIVE TO BE USED.  
D= LOCTITE 221 H= SILICON E= LOCTITE 648  
PAGE 46 —MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07)  
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HATZ 1D81Z ENGINE — CRANKCASE ASSY.  
CRANKCASE ASSY.  
NO.  
1
PART NO.  
01249051  
50249101  
03793900  
03793800  
03794000  
03793700  
04033700  
04000800  
50144300  
03794510  
03794800  
50098300  
50325500  
50037800  
50328200  
04011650  
04069500  
04062010  
50357700  
04087400  
04084500  
04084500  
PART NAME  
QTY.  
REMARKS  
CRANKCASE ...................................... 1 ........ INCLUDES ITEMS W/  
*
3
CYL. PIN 6/20  
NOZZLE  
BEARING BUSH  
PLUG  
4
*
4
1
*
5
1
*
6
1..2  
1
*
7
MAIN BEARING  
MAIN BEARING -O.5  
PLUG  
*
8
1
9
1
*
10  
STUD M 6X16  
STUD  
2
*
11  
12  
13  
14  
15  
16  
17  
18  
19  
22  
23  
25  
26  
1
*
*
*
*
*
*
INTERMEDIATE PIECE  
STUD 8 X 20  
1
2
COVER 10  
1
STUD M 8 X 22  
STUD M 16 X 22  
THRUST PLATE  
SHIM 1.05  
8
2
1
0..4  
4
HEX SCREW M 9 X 28  
GRUB SCREW M 8 X 10  
STUD M 6 X 22  
SEALING RING  
SEALING RING  
1
*
*
1
2
2
MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07) — PAGE 47  
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HATZ 1D81Z ENGINE — CRANKCASE ASSY. (EXTERNAL PARTS)  
CRANKCASE ASSY.(EXTERNAL PARTS)  
LETTERS IN BOLD INDICATE TYPE OF BONDING ADHESIVE TO BE USED.  
D= LOCTITE 221 H= SILICON E= LOCTITE 648  
PAGE 48 —MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07)  
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HATZ 1D81Z ENGINE — CRANKCASE ASSY. (EXTERNAL PARTS)  
CRANKCASE ASSY.(EXTERNAL PARTS)  
NO.  
1
PART NO.  
03794100  
03794300  
93794201  
50051000  
03795800  
50329000  
03795100  
01248810  
50417600  
03794900  
03795000  
50327100  
01241700  
50170900  
50329100  
50001600  
50373100  
50140400  
03794700  
50328300  
01321200  
50286400  
01321100  
PART NAME  
QTY.  
2
REMARKS  
WASHER  
2
CAM FOLLOWER  
CAM FOLLOW SPINDLE  
ALLEN SCREW M 6 X 30  
O-RING 12 X 18, 3 X 7.3  
O-RING 9.5 X 2.5  
O-RING 265 X 269, 4 X 3.6  
PLATE  
ALL. SCREW. M 8 X 25 Z4  
HOUSING  
SUCTION SIEVE  
ALLEN SCREW M 6 X 50  
OIL SUMP  
LOCK WASHER 6  
ALLEN SCREW M 6 X 10  
JOINT A22X27  
DRAIN PLUG M 22 X 1.5  
DRAIN PLUG  
COVER  
2
3
2
4
2
5
2
6
3
7
1
8
1
10  
11  
12  
13  
14  
15  
16  
17  
18  
18  
20  
21  
22  
23  
24  
25#  
26#  
27  
28  
29  
30  
22  
1
1
2
1
12  
12  
2
0..2  
0..2  
1
HEXAGON NUT M6  
CLOS. SCREW + SIEVE  
JOINT A 24 X 29  
3
1
1
OIL RELIEF VALVE ASSY. ................... 1 ........ INCLUDES ITEMS W/#  
OIL RELIEF VALVE .............................. 1 ........ CANNOT BE PURCHASED SEPARATELY  
50412900  
50062400  
50062300  
01241500  
O-RING 18 X 2  
1
2
2
JOINT A10 X 13.5  
CLOSING SCREW M10 X 1  
DIPSTICK ASSY .................................. 1 ........ INCLUDES ITEMS W/  
*
DIPSTICK ............................................ 1 ........ CANNOT BE PURCHASED SEPARATELY  
*
*
31  
32  
50359700  
50329200  
05068800  
50081200  
50170600  
01480000  
01248900  
04033401  
04053210  
04024220  
04062110  
04024301  
50170800  
04045800  
04046300  
50001400  
50044200  
50434300  
50050700  
50140400  
04069500  
04069600  
04069800  
04069900  
04065400  
04084000  
50139200  
05068900  
O-RING 20.29 X 2.62  
O-RING 50X55X3  
LUB. OIL FILT. HOUS.  
LOCK WASHER A6  
ALLEN SCREW M 6 X 20  
SUPRA OIL FILTER  
COVER  
2
2
33  
34  
35  
36  
37  
38  
39  
41  
42  
43  
44  
45  
46  
47  
48  
49  
50  
52  
53  
53  
54  
54  
55  
56  
58  
59  
1
4
4
1
1
COVER  
1
SET SCREW M9  
CAM FOLLOWER BRACK.  
BOLT  
1
1
1
CAM FOLLOWER T/U  
ALLEN SCREW M 6 X 25  
OIL SUMP  
1
1
1
DRAIN EXTENSION  
JOINT A 18 X 22  
CLOS. SCREW M 18 X 1.5  
STUD M 8 X 18  
ALLEN SCREW M 6 X 16  
DRAIN PLUG  
1
1
1
2
8
1
SHIM 1.05  
0..3  
0..3  
0..1  
0..1  
1
SHIM 1.2  
SHIM 1.05  
SHIM 1.20  
CYLINDER HEAD BOLT  
LIFTING SPRING  
STUD M 6 X 16  
GASKET  
1
2
1
MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07) — PAGE 49  
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HATZ 1D81Z ENGINE — CRANKSHAFT ASSY.  
CRANKSHAFT ASSY.  
LETTERS IN BOLD INDICATE TYPE OF BONDING ADHESIVE TO BE USED.  
D= LOCTITE 221 H= SILICON E= LOCTITE 648  
PAGE 50 —MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07)  
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HATZ 1D81Z ENGINE — CRANKSHAFT ASSY.  
CRANKSHAFT ASSY.  
NO.  
1
PART NO.  
01269810  
PART NAME  
QTY. REMARKS  
CRANKSHAFT ASSY. ................................ 1 ...... INCLUDES ITEMS W/  
*
2
CRANKSHAFT ............................................. 1 ...... CANNOT BE PURCHASED SEPARATELY  
*
3
50087200  
03796000  
50055000  
50362600  
03796120  
04000600  
50224900  
01292100  
COVER 28  
1
1
2
1
1
1
1
*
4
COUNTER WEIGHT  
ALLEN SCREW M 10 X 50  
FITTING KEY A 6 X 4 X 32  
GEARWHEEL F. CRANKS  
BUFFER RING  
5
6
*
7
8
9
O-RING 123 X 2.5  
10  
11#  
12#  
13  
14#  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
BEARING FLANGE ASSY. ........................... 1 ...... INCLUDES ITEMS W/#  
BEARING FLANGE ...................................... 1 ...... CANNOT BE PURCHASED SEPARATELY  
MAIN BEARING  
04006800  
04036100  
50362700  
50413600  
50364300  
04023110  
01485500  
04022910  
05033200  
03962700  
50017800  
50414400  
01512001  
MAIN BEARING -0.5  
1
OIL SEAL 62 X 90 X 10  
WASHER  
1
8
HEXAGON NUT M8  
8
STUBSHAFT SAE W/KEY  
STUBSHAFT SAE TAPER  
STUBSHAFT ITALIA  
STUBSHAFT ITALIA 23  
FITTING KEY A6.35 X 63  
WOODRUFF KEY 4 X 6.5  
WEAR SLEEVE 62 X 12.7  
1
1
1
1
1
1
0..1  
KIT, CRANKSHAFT REPLACEMENT60-81 1  
MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07) — PAGE 51  
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HATZ 1D81Z ENGINE — CAMSHAFT ASSY.  
CAMSHAFT ASSY.  
PAGE 52 —MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07)  
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HATZ 1D81Z ENGINE — CAMSHAFT ASSY.  
CAMSHAFT ASSY.  
NO.  
1
PART NO.  
03796400  
03796500  
01242000  
04099900  
03796800  
03796900  
01267300  
01267200  
PART NAME  
SHAFT  
QTY.  
REMARKS  
2
2
2
1
1
1
2
BUSH  
3
GEARWHEEL  
CAMSHAFT  
GEARWHEEL  
GEARWHEEL  
4
5
6
7
SHAFT, PUMP SIDE............................ 1 ........ INCLUDES ITEMS W/  
*
8
SHAFT STARTER SIDE...................... 1 ........ INCLUDES ITEMS W/#  
9
COUNTER BALANCE......................... 1 ........ CANNOT BE PURCHASED SEPARATELY  
*
*
10  
50324900  
WOODRUFF KEY 3 X 3.7  
2
11 #  
12#  
PIN ....................................................... 2 ........ CANNOT BE PURCHASED SEPARATELY  
COUNTERBALANCE ......................... 1 ........ CANNOT BE PURCHASED SEPARATELY  
MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07) — PAGE 53  
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HATZ 1D81Z ENGINE — PISTON/RINGS ASSY.  
PISTON/RINGS ASSY.  
PAGE 54 —MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07)  
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HATZ 1D81Z ENGINE — PISTON/RINGS ASSY.  
PISTON/RINGS ASSY.  
NO.  
PART NO.  
01243901  
01313510  
01265101  
01265201  
01314610  
01314710  
PART NAME  
QTY.  
REMARKS  
1
PISTON ASSY. STD................................. 1 .............. INCLUDES ITEMS W/  
PISTON ASSY. OVERSIZED ................... 1 .............. INCLUDES ITEMS W/  
*
*
1
2
PISTON ASSY. 100+0.5 ........................... 1 .............. INCLUDES ITEMS W/#  
PISTON ASSY. 100+1.0 ........................... 1 .............. INCLUDES ITEMS W/#  
PISTON ASSY. 100+0.5 .......................... 1 .............. INCLUDES ITEMS W/#  
PISTON ASSY. 100+1.0 ........................... 1 .............. INCLUDES ITEMS W/#  
PISTON.................................................... 1 .............. CANNOT BE PURCHASED SEPARATELY  
WRIST PIN  
CIRCLIP 30 X 1.2  
2
2
2
3 #+  
*
4 #+  
50353600  
50020800  
01247300  
01264500  
01265000  
1
2
1
1
1
*
5 #+  
*
6
+
PISTON RING SET 100  
PISTON RING SET +0.5  
PISTON RING SET +1.0  
*
7#  
7#  
8
9
+
CYLINDER ............................................... 1 .............. CANNOT BE PURCHASED SEPARATELY  
CYLINDER ASSY. W/ PISTON ............... 1 .............. INCLUDES ITEMS W/+  
01508301  
01244001  
10  
CONROD ASSY. ..................................... 1 .............. INCLUDES ITEMS W/%  
11%  
12%  
13%  
14  
CONROD................................................. 1 .............. CANNOT BE PURCHASED SEPARATELY  
04032200  
04001800  
04001900  
04033100  
BUSH FOR CONROD  
CONROD SCREW  
BIG END BEARING  
ROD BEARING -0.5  
1
2
1
1
15  
MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07) — PAGE 55  
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HATZ 1D81Z ENGINE — CYLINDER HEAD ASSY.  
K= HOT TEMPERATURE FELT 100g  
PAGE 56 —MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07)  
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HATZ 1D81Z ENGINE — CYLINDER HEAD ASSY.  
CYLINDER HEAD ASSY.  
NO.  
1
PART NO.  
01264810  
01499610  
PART NAME  
QTY.  
REMARKS  
CYLINDER HEAD ASSY. .................. 1 ........... INCLUDES ITEMS W/  
*
*
1
CYLINDER HEAD ASSY. .................. 1 ........... INCLUDES ITEMS W/  
2
CYLINDER HEAD ............................ 1 ........... CANNOT BE PURCHASED SEPARATELY  
*
*
3
04008710  
50038400  
04068910  
04068920  
04005001  
04091001  
04005101  
04091100  
04005201  
04005300  
04005401  
03786300  
04003710  
VALVE GUIDE  
STUD M 8 X 35  
2
1
*
4
5
ROCKER SHAFT ASSY. “C”............. 1 ........... INCLUDES ITEMS W/+  
5
ROCKER SHAFT ASSY.................... 1 ........... INCLUDES ITEMS W/+  
6
VALVE INLET  
VALVE INLET  
VALVE EXHAUST  
VALVE EXHAUST  
WASHER  
1
1
1
1
2
2
2
2
1
6
7
7
8
9
VALVE SPRING  
CUP  
VALVE COLLET  
ROCKER INLET  
10  
11  
12  
13#  
14%  
15%  
16+  
17  
18%  
19  
20  
21  
22#  
23  
24  
25  
26  
27  
28  
29+  
30  
31  
32  
35  
36  
37  
38  
39  
40  
41  
42  
43  
44  
45  
46  
47  
48  
49  
50  
ROCKER INLET ............................... 1 ........... CANNOT BE PURCHASED SEPARATELY  
RATCHET WHEEL ........................... 1 ........... CANNOT BE PURCHASED SEPARATELY  
03778401  
SPRING SHEET  
1
ROCKER SHAFT ............................. 1 ........... CANNOT BE PURCHASED SEPARATELY  
50117200  
03365710  
03366001  
03783000  
03173100  
CIRCLIP  
1
1
1
2
2
RATCHET F. DECOMPR.  
SPRING  
ADJUSTING SCREW  
HEXAGON NUT  
DOWEL PIN ..................................... 1 ........... CANNOT BE PURCHASED SEPARATELY  
50123800  
04004700  
04004800  
01245200  
50001100  
04048900  
40022401  
50034700  
04009810  
04004100  
04068800  
04036800  
04036500  
04036600  
04002700  
04002800  
04002900  
04003000  
04003100  
04003200  
04003300  
04006111  
01245410  
50081200  
50170800  
04008100  
BALL 7MM III  
BUSH  
PRESSURE SPRING  
ADJUSTING SCREW  
JOINT A 12 X 15.5  
RUBBER RING  
O-RING 8 X 2 GRAY  
PIN 4 X 22  
HANDLE  
PIN  
GASK. F. CYL. HEAD 0.5  
GASK. F. CYL. HEAD 0.6  
GASK. F. CYL. HEAD 0.7  
GASK. F. CYL. HEAD 0.8  
GASK. F. CYL. HEAD 0.9  
GASK. F. CYL. HEAD 1.0  
GASK. F. CYL. HEAD 1.1  
GASK. F. CYL. HEAD 1.2  
GASK. F. CYL. HEAD 1.3  
CYL. HEAD SCREW 305 MM  
CYL. HEAD SCREW 258 MM  
VALVE COVER GASKET 16>  
VALVE COVER  
1
1
1
1
1
1
1..2  
1
1
1
0..1  
0..1  
0..1  
0..1  
0..1  
0..1  
0..1  
0..1  
0..1  
2
2
1
1
LOCK WASHER A6  
ALLEN SCREW M 6 X 25  
LIFTING BRACKET  
4
4
1
MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07) — PAGE 57  
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HATZ 1D81Z ENGINE — CYLINDER HEAD ASSY.  
CYLINDER HEAD ASSY.  
PAGE 58 —MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07)  
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HATZ 1D81Z ENGINE — CYLINDER HEAD ASSY.  
CYLINDER HEAD ASSY.  
NO.  
51  
52  
53  
PART NO.  
50366300  
50208500  
01493200  
PART NAME  
ALLEN SCREW M 8X 20  
LOCK WASHER 8  
QTY.  
2
2
REMARKS  
■
DEVICE HOUSING .......................... 1 ........... INCLUDES ITEMS W/  
■
54  
55  
56  
57  
60  
61  
66  
67  
68  
69  
70  
71  
72  
74  
75  
76  
77  
78  
79  
80  
81  
82  
83  
85  
86  
88  
89  
90  
90  
91  
HOUSING DEVICE BASE ................ 1 ........... CANNOT BE PURCHASED SEPARATELY  
O-RING 12 X 16 X2  
■✓✢  
■✓  
40081700  
2
CAP ................................................... 1 ........... CANNOT BE PURCHASED SEPARATELY  
✓
5
01308300  
01269700  
03457500  
04004200  
50330100  
01280600  
01275610  
CLOSING PLUG .............................. 1 ........... INCLUDES ITEMS W/  
OIL PRESSURE PIPE  
DISC F. STUD  
PRESSURE SPRING  
O-RING 4 X 1.2  
1
4
1
2
INCLUDES ITEMS W/  
5
5
✪
✢
OIL FILTER DEVICE ........................ 1 ........... INCLUDES ITEMS W/  
CLOSING PLUG ASSY 46MM ......... 1 ........... INCLUDES ITEMS W/  
✪
✢
✪
5
CLOSING PLUG .............................. 1 ........... CANNOT BE PURCHASED SEPARATELY  
TUBE ................................................ 1 ........... CANNOT BE PURCHASED SEPARATELY  
ROD .................................................. 1 ........... CANNOT BE PURCHASED SEPARATELY  
04047920  
50132000  
04048220  
50034500  
04048110  
03579800  
04048000  
03778200  
50132000  
50405200  
01285010  
50034600  
03787300  
04097200  
04038500  
04104300  
01557600  
INTERM. PIECE DECOMP.  
ROLL PIN 4 X 16  
1
1
1
1
1
1
1
1
1
2
DECOMPRESSION SHAFT “C”  
ROLL PIN 4 X 14  
INTERMEDIATE PIECE  
RUBBER WASHER  
WASHER 10.5 X 50 X 0.8  
HANDLE 6 X 18  
ROLL PIN 4 X 16  
VALVE STEM SEAL CAP  
ROCKER EXHAUST ........................ 1 ........... INCLUDES ITEMS W/#  
ROLL PIN 4 X 18  
SHIM 0.2  
1
1
1
1
1
PRES. SPRING DECOMPR.  
OIL RESTRICTOR VALVE ASSY.  
OIL RESTRICTOR VAVE  
*
*
GEARWHEEL F. DECOMPR........... 1 ........... INCLUDES ITEMS W/%  
MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07) — PAGE 59  
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HATZ 1D81Z ENGINE — FLYWHEEL ASSY.  
FLYWHEEL ASSY.  
PAGE 60 —MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07)  
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HATZ 1D81Z ENGINE — FLYWHEEL ASSY.  
FLYWHEEL ASSY.  
NO.  
1
PART NO.  
01244310  
50330200  
04002500  
50347000  
04002000  
04002000  
50330300  
04007410  
50363100  
04007131  
PART NAME  
QTY.  
REMARKS  
PUSHROD  
2
2
2
2
2
2
2
1
6
1
2
O-RING 19 X 3N  
3
PROTECTION TUBE  
CIRCLIP AS 24 X 1.75  
PRESSURE SPRING  
PRESSURE RING  
O-RING 23 X 3  
4
5
6
7
15  
16  
18  
PLATE  
ALLEN SCREW M 10 X 40  
FLYWHEEL , ELECTRIC START  
MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07) — PAGE 61  
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HATZ 1D81Z ENGINE — OIL PUMP ASSY.  
OIL PUMP ASSY.  
LETTERS IN BOLD INDICATE TYPE OF BONDING ADHESIVE TO BE USED.  
D= LOCTITE 221 H= SILICON E= LOCTITE 648  
PAGE 62 —MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07)  
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HATZ 1D81Z ENGINE — OIL PUMP ASSY.  
OIL PUMP ASSY.  
NO.  
1
PART NO.  
50328000  
03797412  
01242401  
03797310  
04063400  
03798600  
50334700  
03797600  
03797510  
03797701  
03798002  
03798102  
03797900  
03797801  
50081200  
50170800  
50051000  
50084901  
03798720  
50260501  
04046000  
PART NAME  
QTY.  
5
REMARKS  
CTR. SUNK SCR.AM 6 X 16  
COVER F. OIL PUMP  
SPRING CAPSULE+BUSH  
GEARWHEEL  
GOVERNOR SPRING 2.9  
CUP  
CIRCLIP5  
BEARING BUSH  
HOUSING  
2
1
3
1
4
1
6
1
7
1
8
1
9
1
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
1
PLATE CENTRIF. WEIGHT  
CENTRIFUGAL WEIGHT  
CENTRIFUGAL WEIGHT  
WASHER  
1
1
1
1
PIN  
1
LOCK WASHER A6  
ALLEN SCREW M 6 X 25  
ALLEN SCREW M 6 X 30  
PIN 8 X 12  
5
3
2
2
GEARWHEEL  
ROLL PIN 2 X 10  
CIRCLIP  
1
2
0.3  
MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07) — PAGE 63  
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HATZ 1D81Z ENGINE —TIMING COVER ASSY.  
TIMING COVER ASSY.  
LETTERS IN BOLD INDICATE TYPE OF BONDING ADHESIVE TO BE USED.  
D= LOCTITE 221 H= SILICON E= LOCTITE 648  
PAGE 64 —MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07)  
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HATZ 1D81Z ENGINE —TIMING COVER ASSY.  
TIMING COVER ASSY.  
NO.  
3#  
6#  
7
PART NO.  
05325600  
03797600  
50330400  
04000400  
50399000  
50417400  
50329500  
04000310  
04023210  
50364700  
01281001  
PART NAME  
COVER 50  
BEARING BUSH  
O-RING 27 X 2N  
COVER  
QTY.  
1
REMARKS  
1
1
8
1
9
CIRCLIP 32 X 1.2  
ALLEN SCREW M 8 X 30 Z3  
ALLEN SCREW M 12 X 40  
BEARING BUSH  
BEARING BUSH  
OIL SEAL 32 X 52 X 7  
1
11  
12  
15#  
16#  
17#  
22  
24#  
25#  
26  
13  
1
1
1
1
TIMING COVER ASSY. NO. 3 ............ 1 .......... INCLUDES ITEMS W/#  
TIMING COVER ................................ 1 .......... CANNOT BE PURCHASED SEPARATELY  
04052400  
03797412  
NOZZLE  
COVER F. OIL PUMP  
1
1
MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07) — PAGE 65  
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HATZ 1D81Z ENGINE — FUEL DEVICE ASSY.  
FUEL DEVICE ASSY.  
LETTERS IN BOLD INDICATE TYPE OF BONDING ADHESIVE TO BE USED.  
D= LOCTITE 221 H= SILICON E= LOCTITE 648  
PAGE 66 —MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07)  
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HATZ 1D81Z ENGINE — FUEL DEVICE ASSY.  
FUEL DEVICE ASSY.  
NO.  
1
PART NO.  
50331500  
04000901  
50050700  
50390200  
50363400  
04011700  
03209700  
04102400  
04102500  
04102600  
04071300  
04102200  
04102300  
50416200  
50148000  
01313600  
04025800  
40085001  
50415101  
50415200  
PART NAME  
ROLLER TAPPET CPL.  
GUIDE  
QTY.  
REMARKS  
1
1
1
0..1  
0..1  
1
2
3
ALLEN SCREW M 6 X 16  
O-RING 17 X 1.1  
O-RING 17 X 1.2  
PLATE  
4
4
5
6
SHIM 0.3  
0..1  
0..1  
0..1  
0..1  
0.2  
0..2  
0..2  
1
7
SHIM 0.60/42.2  
8
SHIM 0.90/42.2  
9
SHIM 1.20/42.2  
10  
10  
10  
11  
13  
15  
16  
16  
17  
18%  
19%  
20  
21  
22  
24  
25  
26  
27  
28 #  
GASKET  
GASKET INJECTION PUMP 0.2  
GASKET INJECTION PUMP 0.3  
INJECTION PUMP  
HEXAGON NUT M8  
FUEL PRESSURE PIPE  
JOINT WASHER  
INJECTOR SEAL  
3
1
1
1
INJECTOR........................................ 1 ........... INCLUDES ITEMS W/%  
NOZZLE DLLA 154PV3  
1
INJECTOR........................................ 1 ........... CANNOT BE PURCHASED SEPARATELY  
03792400  
04035700  
50000800  
50333400  
50313000  
50038400  
50004600  
05035200  
FLANGE  
WASHER  
1
1
2
1
1
1
1
1
COPPER WASHER  
BANJO UNION  
BANJO BOLT M6  
STUD M 8 X 35  
SET SCREW AM 8 X 16  
PRESSURE SPRING  
*
29 #  
PIN .................................................... 1 ........... CANNOT BE PURCHASED SEPARATELY  
PIST. + SPRG. EXT. FUEL ................ 1 ........... INCLUDES ITEMS W/  
O-RING 22 X 1.6  
CYL. F. EXTR. FUEL DEV.  
DISC.  
CLOS. SCREW M 16 X 1.5  
JOINT A12 X 15.5  
RING PIECE NW6  
PIPE NIPPLE  
FUEL HOSE 4.5 X 100  
VENT VALVE  
FUEL HOSE 4.5/150  
FUEL HOSE 4.5 X 55  
T-CONNECTION NW3  
FUEL PIPE 390  
*
30  
01519500  
50328900  
04001410  
04001600  
50330800  
50001100  
50015800  
03662300  
04060400  
00805500  
03807100  
04060200  
50157800  
03902000  
05029600  
50279600  
50357200  
50399801  
50399900  
01459700  
01498902  
*
36#  
37#  
38#  
39#  
40  
41  
42  
43  
44  
45  
45  
46  
47  
48  
49  
50  
51  
52  
53  
60  
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
2
4
1
1
FUEL HOSE 4.5/850  
CONNECTING NIPPLE  
HOSE CLIP 5SKZ  
CLAMP 11.3  
CLAMP 9.5  
CLIP  
PIST. + CYL. EXTR. FUEL ................ 1 ........... INCLUDES ITEMS W/#  
MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07) — PAGE 67  
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HATZ 1D81Z ENGINE — AIR DUCTING ASSY.  
AIR DUCTING ASSY.  
PAGE 68 —MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07)  
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HATZ 1D81Z ENGINE — AIR DUCTING ASSY.  
AIR DUCTING ASSY.  
NO.  
1
PART NO.  
01246220  
PART NAME  
QTY.  
REMARKS  
COOLING AIR DUCT ASSY .......1................. INCLUDES ITEMS W/  
*
2
COOLING AIR DUCT .................1................. CANNOT BE PURCHASED SEPARATELY  
*
3 %  
04007601  
04007720  
01246411  
SEALING STRIP 32.2MM  
SEALING STRIP 76MM  
2
2
*
4 %  
*
5
COOLING AIR DUCT .................1................. INCLUDES ITEMS W/%  
6%  
7
SIDE SHROUD ............................1................. CANNOT BE PURCHASED SEPARATELY  
COOLING AIR DUCT ASSY. .......1................. INCLUDES ITEMS W/#  
01246600  
8#  
9#  
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
COOLING AIR DUCT .................1................. CANNOT BE PURCHASED SEPARATELY  
04007901  
50081200  
50144400  
50149100  
50206300  
04008500  
50093700  
50093600  
50364900  
50331400  
04008211  
50333500  
50334800  
50226000  
03225504  
40002500  
04080400  
50170900  
50177100  
SEALING STRIP 413MM  
LOCK WASHER A6  
HEXAGON NUT M6  
ALLEN SCREW M6 X 12  
ALLEN SCREW M8 X 18  
PARTING SHEET  
1
15  
4
12  
4
1
FLAT WASHER A13  
HEXAGON NUT M12  
STUD M12 X 40  
6
6
2
STUD M12 X 35  
4
INTERMED. HOUSING  
HEXSCREW M 6 X 8  
RUBBER SLEEVE  
1
2
1
*
23  
GRUB SCREW M 8 X 6  
NAME PLATE  
4
24  
25  
28  
29  
30  
1
POP RIVET 2.4 MM  
COVER F. BLOW DUCTING  
LOCK WASHER 6  
4
1
4
HEXSCREW M 6 X 16  
2
MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07) — PAGE 69  
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HATZ 1D81Z ENGINE — BREATHER ASSY.  
BREATHER ASSY.  
LETTERS IN BOLD INDICATE TYPE OF BONDING ADHESIVE TO BE USED.  
D= LOCTITE 221 H= SILICON E= LOCTITE 648  
PAGE 70 —MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07)  
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HATZ 1D81Z ENGINE — BREATHER ASSY.  
BREATHER ASSY.  
NO.  
1#  
2#  
3
PART NO.  
PART NAME  
QTY.  
REMARKS  
THROTTLE ARM ............................. 1 ........... CANNOT BE PURCHASED SEPARATELY  
THROTTLE LINKAGE ..................... 1 ........... CANNOT BE PURCHASED SEPARATELY  
04000100  
50266100  
04037500  
50328701  
04000200  
01242810  
03799010  
04052700  
50386100  
50129900  
01279210  
01302910  
03799210  
50328300  
03799400  
50144400  
40021500  
40021400  
03888300  
03927300  
50144500  
50144400  
01246801  
50403500  
01317000  
04080300  
03568700  
SHIM  
1
2
1
4
1
1
1
1
1
1
1
1
1
3
2
2
2
2
1
1
1
1
4
CIRCLIP 6  
5
LEVER  
6#  
7
ALLEN SCREW M 5 X 8  
TENSION SPRING  
GUIDE  
8
9
THIGH SPRING  
SPACER RING  
O-RING 21 X 2  
10  
11  
12  
13  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
26  
37  
38%  
39%  
40%  
41%  
42%  
43  
44  
45  
46%  
47  
48  
O-RING 32 X 37 X 2.5  
STOP RING SPD. CONT. S  
STOP RING SPD. CONT. C  
FRICTION PLATE  
HEXAGON NUT M6  
GRUB SCREW  
HEXAGON NUT M6  
SEAL WIRE 0.5-0.3  
LEAD SEAL 8MM  
THROTTLE LEVER  
SCREW M 6 X 32  
FLAT WASHER 6.4  
HEXAGON NUT M6  
GOVERNOR LEVER ASSY. ............. 1 ........... INCLUDES ITEMS W/#  
GRUB SCREW M 8 X 20  
1
BREATHER VALVE ASSY. ................ 1 ........... INCLUDES ITEMS W/%  
BREATHER CUP  
RUBBER DIAPHRAM  
1
1
BREATHER ...................................... 1 ........... CANNOT BE PURCHASED SEPARATELY  
04074700  
04074800  
04080500  
50081200  
50170700  
04090500  
50411500  
50405301  
05038000  
50388300  
01475600  
BREATHER HOSE  
BREATHER HOSE  
BUSH  
1
1
2
2
2
1
1
1
1
1
LOCK WASHER A6  
ALLEN SCREW M 6 X 16  
CLIP  
SET PIN  
GRUB SCREW M 6 X 45  
HOSE 7 X 12 X 120  
HOSE CLAMP  
*
49  
*
50  
*
51  
ADJUST. SCREW ID 1D81 .............. 1 ........... INCLUDES ITEMS W/  
*
MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07) — PAGE 71  
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HATZ 1D81Z ENGINE — FUELTANK ASSY.  
FUEL TANK ASSY.  
PAGE 72 —MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07)  
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HATZ 1D81Z ENGINE — FUELTANK ASSY.  
FUEL TANK ASSY.  
NO.  
2
PART NO.  
01494200  
05097600  
03981802  
03981701  
03981900  
PART NAME  
QTY.  
REMARKS  
FUEL TANK ASSY ( 7 LTRS.) ................. 1 ............ INCLUDES ITEMS W/#  
3
WASHER  
12  
12  
6
4#  
5#  
6#  
7#  
8
RUBBER WASHER  
BUSH 8.4 X 13 X 7.5  
RUBBER SHELL  
6
FUEL TANK ............................................. 1 ............ CANNOT BE PURCHASED SEPARATELY  
03989800  
50377001  
50177500  
50385800  
03801200  
50478800  
50144400  
50144500  
03165500  
03493600  
50165500  
05031900  
50387300  
50001000  
50359800  
05029200  
03663700  
01490300  
BUSH 8.5 X 20 X 49  
STUD M 8 X 75  
2
2
4
1
1
9
10#  
11#  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21#  
22#  
23#  
24  
25  
26%  
27%  
28  
29  
30#  
31  
32  
33  
34  
ALLEN SCREW M 8 X 40  
CAP, FUEL TANK  
FUEL HOSE 7/220  
FUEL FILTER ......................................... 1 ............ REPLACES 40089401  
HEXAGON NUT M6  
FLAT WASHER 6.4  
PIPE CLIP  
1
1
1
1
1
1
1
1
1
4
1
FUEL HOSE 7/330  
HEXSCREW M 6 X 12  
GUARD  
SIEVE  
JOINT A 10 X 16  
HEXSCREW M 10 X 12  
BUSH 9 X 18 X 8  
FUEL PIPE L W 4.5 X 50  
PROTEC. GUARD TOP.......................... 1 ............ INCLUDES ITEMS W/%  
FINGER GUARD .................................... 1 ............ CANNOT BE PURCHASED SEPARATELY  
04030901  
03150900  
01402200  
50183000  
50148000  
50208500  
05045300  
05044001  
05036900  
05043900  
50414800  
01519401  
SEALING STRIP 29 MM  
CLAMP  
GUARD  
ALLEN SCREW M 8 X 35  
HEXAGON NUT M8  
LOCK WASHER 8  
CLAMP 21 MM  
HOSE 10/12 MM  
HOSE CLIP  
WATER SEPARATOR  
CLOS. SCREW M 10  
1
1
1
4
2
4
1
1
1
1
1
*
35  
*
36  
*
37  
*
38  
WATER SEPARATOR............................. 1 ............ INCLUDES ITEMS W/  
*
MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07) — PAGE 73  
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HATZ 1D81Z ENGINE — FUEL PUMP ASSY.  
FUEL PUMP ASSY.  
PAGE 74 —MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07)  
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HATZ 1D81Z ENGINE — FUEL PUMP ASSY.  
FUEL PUMP ASSY.  
NO.  
1
PART NO.  
04011900  
03796400  
04011801  
04000800  
50331800  
50332301  
50328300  
50001200  
50006400  
50015900  
01468801  
49062501  
PART NAME  
BUSH  
SHAFT  
LEVER F. FEED PUMP  
PLUG  
O-RING  
QTY.  
1
REMARKS  
2
1
3
1
4
1
5
1
6
FUEL FEED PUMP  
HEXAGON NUT M6  
JOINT A 14 X 18  
BANJO BOLT A8  
RING PIECE N W 8  
FUEL PIPE  
1
7
3
8
4
9
2
10  
11  
12  
1
1
DIAPHRAM  
1
MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07) — PAGE 75  
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HATZ 1D81Z ENGINE — AIR FILTER ASSY.  
AIR FILTER ASSY.  
L= SILICON SEALER  
PAGE 76 —MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07)  
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HATZ 1D81Z ENGINE — AIR FILTER ASSY.  
AIR FILTER ASSY.  
NO.  
1
PART NO.  
50038900  
04006300  
04006200  
04004312  
50095100  
50398400  
01493000  
01483400  
50148100  
50129500  
50412000  
05036400  
05039300  
03579400  
50062400  
50062300  
01496800  
04047701  
05039401  
PART NAME  
STUD M 8 X 60  
GASKET  
INSULATING FLANGE  
AIRFILTER HOUSING  
LOCK WASHER A8  
CYLINDER HEAD BOLT  
AIR FILTER  
RETAINING STRAP  
FLAT WASHER 8.4  
HEXAGON NUT M8  
CIRCLIP 10 X 1  
QTY. REMARKS  
2
2
2
3
1
1
1
1
1
1
2
2
1
1
1
1
1
1
4
5
6
7
8
9
10  
11  
12  
13  
14  
15  
16  
34  
35  
CENTERING COVER  
BUSH 33 X 35 X 23.5  
SEALING RING  
JOINT A 10 X 13.5  
CLOSING SCREW M 10 X 1  
COVER AIRFILTER ............................. 1 ........ INCLUDES ITEMS W/  
*
SEALING STRIP LG 704  
CLOSING CAP  
1
1
*
37  
*
36  
CLOSING COVER............................... 1 ........ CANNOT BE PURCHASED SEPARATELY  
*
38  
03814100  
05038700  
01490800  
01287900  
04047300  
50395700  
50411900  
50120000  
40028300  
05033500  
05044501  
05043601  
05045600  
05043700  
50173500  
50170900  
50170600  
03961400  
05043800  
50159500  
50006200  
50062400  
50358400  
01499800  
INSULATING DISC  
WASHER 11 X 36 X 3  
WING SCREW  
1
1
1
1
1
1
2
2
2
1
1
1
1
1
1
1
1
2
1
4
1
2
1
39  
40  
41  
42  
43  
46  
GASKET AIRFILTER  
INTERMEDIATE FLANGE  
COVER 15  
CLOSING PLUG 7  
DISC A 6.4  
*
47  
48  
HEXAGON NUT M 6  
VALVE PLATE  
52  
53#  
54#  
55#  
56#  
57  
INDIC. PLATE  
RUBBER CAP  
SIGNAL RING  
ADAPTER  
PIPE CLIP  
58  
LOCK WASHER 6  
ALLEN SCREW M 6 X 20  
FUEL HOSE 3.51-50  
HOSE 2 X 4 X 170  
RING PIECE N W 4  
BANJO BOLT A 4  
JOINT A 10 X 13.5  
STRAP  
59  
60  
61  
62  
63  
64  
65  
66  
MAINT. INDICATOR ............................ 1 ........ INCLUDES ITEMS W/#  
MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07) — PAGE 77  
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HATZ 1D81Z ENGINE — EXHAUST SILENCER ASSY.  
EXHAUST SILENCER ASSY.  
J= HOT TEMPERATURE PASTE  
PAGE 78 —MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07)  
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HATZ 1D81Z ENGINE — EXHAUST SILENCER ASSY.  
EXHAUST SILENCER ASSY.  
NO.  
1
PART NO.  
PART NAME  
QTY.  
REMARKS  
01498800  
EXHAUST SILENCER S ASSY. ......... 1 .......... INCLUDES ITEMS W/  
*
2
EXHAUST SILENCER ....................... 1 .......... CANNOT BE PURCHASED SEPARATELY  
*
3
6
50404000  
01471110  
03877300  
03877700  
50249500  
50145900  
40028600  
03997100  
01191901  
05034200  
50255700  
ALLEN SCREW M 8 X 30  
GASKET SET EXHAUST SIL.  
ELBOW  
3
1
*
10  
11  
12  
13  
14  
16  
18  
19  
20  
1
PIPE CLIP 52.5  
1
HEX SCREW M 10 X 50  
FLAT WASHER 10.5  
HEX NUT M 10  
1
1
1
EXHAUST TUBE  
1
MUFFLER GUARD ID  
LOCK WASHER  
1
10  
5
ALLEN SCREW M 6 X 12  
MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07) — PAGE 79  
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HATZ 1D81Z ENGINE — STARTER/ALTERNATOR ASSY.  
STARTER/ALTERNATOR ASSY.  
PAGE 80 —MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07)  
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HATZ 1D81Z ENGINE — STARTER/ALTERNATOR ASSY.  
STARTER/ALTERNATOR ASSY.  
NO.  
1
PART NO.  
50201200  
50353420  
50093700  
50380600  
01459700  
50149100  
50208500  
50148000  
04021000  
50170700  
01439000  
50401200  
50165600  
50236600  
01462800  
04021100  
04009920  
50144500  
50165500  
50170900  
04021210  
04020421  
50397100  
01440300  
50165400  
01248121  
01425021  
01440100  
50380800  
50373700  
50373600  
50216300  
50335700  
50402100  
50402000  
50358400  
01440200  
01470200  
50379700  
01439400  
40026600  
50400300  
50179900  
01430800  
50023000  
50426900  
03814100  
50426800  
03814200  
50016800  
50275300  
01430900  
01193401  
PART NAME  
QTY.  
2
REMARKS  
STUD M 12 X 50  
2
STARTER 12 V 10 TOOTH  
FLAT WASHER A 13  
HEXAGON NUT M 12  
CLIP  
ALLEN SCREW M 6 X 12  
LOCK WASHER 8  
HEXAGON NUT M 8  
BUSH 6.3 X 12.15 X 5  
ALLEN SCREW M 6 X 16  
COIL WITH WIRE 12 V  
ALLEN SCREW M 6 X 35  
LOCK WASHER  
ALLEN SCREW M 6 X 25  
ELECTRIC WIRE  
PROTECT. ALTERNATOR  
PARTING SHEET  
FLAT WASHER 6.4  
HEXSCREW M 6 X 12  
LOCK WASHER 6  
GEAR RING 123 TEETH  
MAGNET SEGMENT  
ALLEN SCREW M 4 X 10  
SUPPORT  
ALLEN SCREW M 8 X 16  
REGULATOR 12 V  
REGULATOR 24 V  
FASTENING PLATE  
CTR. SUNK SCREW M 6 X 10  
PLUG SLEEVE HOUSING  
PIN TERM. HOUSING 6 WAY  
WASHER 5.3  
HEXSCREW M 5 X 25  
PLUG SLEEVE HOUSING  
PLUG SLEEVE HOUSING  
STRAP  
SUPPORT  
CLIP  
PLUG SLEEVE HOUSING  
WIRING HARNESS  
PROTECTION CAP. RUBBER  
HEXSCREW M 8 X 40  
STAR WASHER  
BATTERY CABLE PLUS  
HEXAGON NUT M 8  
SERRATED WASH. A 8.4  
INSULATING DISC  
TOOTH LOCK J 10.5  
INSULATING TUBE  
DISC 8.4  
HEXSCREW M 8 X 35  
BATTERY CABLE MINUS  
ELECTRIC WIRE  
1
3
2
4
2
5
2
6
2
7
4
8
2
9
2
10  
12  
13  
14  
15  
16  
17  
18  
19  
21  
22  
23  
24  
25  
26  
27  
28  
28  
29  
30  
31  
32  
33  
34  
35  
36  
37  
38  
42  
43  
44  
46  
47  
48  
49  
50  
51  
52  
53  
54  
55  
56  
57  
58  
2
1
1
2
1
1
1
1
1
5
6
1
7
14  
1
2
1
1
1
2
1
1
2
2
1
1
4
1
2
1
1
1
1
1..2  
1
3
1
2
1
1
2
1
1
1
MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07) — PAGE 81  
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HATZ 1D81Z ENGINE — INSTRUMENT BOX ASSY.  
INSTRUMENT BOX ASSY.  
LETTERS IN BOLD INDICATE TYPE OF BONDING ADHESIVE TO BE USED.  
D= LOCTITE 221 H= SILICON E= LOCTITE 648  
PAGE 82 —MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07)  
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HATZ 1D81Z ENGINE — INSTRUMENT BOX ASSY.  
INSTRUMENT BOX ASSY.  
NO.  
1
PART NO.  
01407000  
01457700  
40028200  
00716311  
50289200  
50160800  
50159010  
50049300  
50159100  
50160700  
50158800  
03666700  
50147100  
05004300  
50276502  
50345300  
PART NAME  
QTY.  
REMARKS  
INSTRUMENT BOX 12 V ................. 1 ........... INCLUDES ITEMS W/  
INSTRUMENT BOX 24 V ................. 1 ........... INCLUDES ITEMS W/  
*
*
1
2
HEX. NUT M5  
1
1
4
1
1
3
1
1
2
2
2
1
*
3
INSRTUMENT BOX, ENCL.  
HEXSCREW M 6 X 12  
CLOSING PLUG, PLASTIC  
MALE CABLE COUPLING  
ALLEN SCREW M 5 X 10  
HEXAGON NUT, PLASTIC  
CONNECTING BLOCK  
ALLEN SCREW M 4 X 20  
BRACKET  
*
4
*
5
*
6
*
7
*
8
*
9
*
10  
*
11  
*
12  
HEXAGON NUT M 4  
DECAL F. INST. BOX  
*
13  
*
14  
GLOW START. SWITCH.................. 1 ........... INCLUDES ITEMS W/%  
*
15 %  
IGN. KEY DS 14603  
1
*
18%  
KEY SWITCH ................................... 1 ........... CANNOT BE PURCHASED SEPARATELY  
*
20  
50176501  
50176600  
50176400  
40096000  
03509211  
40009700  
40009800  
40091400  
01150101  
49050900  
50276600  
50276700  
01090201  
01089801  
01089901  
50358400  
50276000  
50275802  
50275902  
40021300  
50268600  
01433601  
05027800  
50001000  
01475200  
INDICATOR LAMP, BATTERY  
INDICATOR LAMP, OIL  
INDICATOR LAMP, TEMP.  
CLOSING PLUG  
1
*
21  
1
22  
24  
1
0..3  
1
*
25  
INSTRU. BOX FRONT  
BULB 12 V - 2 W  
*
26  
0..4  
0..4  
0..2  
1
*
26  
BULB 24 V - 2 W  
*
27  
CLOSING PLUG, PLASTIC  
DIODE ASSY.  
*
28  
*
29 %  
FLAP FOR SWITCHBOX  
PLUG SLEEVE HOUSING  
PLUG SLEEVE HOUSING  
DIODE ASSY.  
1
*
30  
1
*
31  
1
*
32  
2
*
33  
DIODE ASSY.  
1
*
34  
DIODE ASSY.  
1
*
35  
STRAP  
1
*
36  
RELAY SOCKET  
1
*
37  
MOTOR START RELAY  
RELAY ENG. PROT. 24 V  
OIL PRESSURE SWITCH  
TEMP. SWITCH  
1
*
37  
1
*
41  
1
42#  
47  
1
WIRING HARNESS  
INTERMED. PIECE. TEMP  
JOINT A 10 X 16  
1
48#  
49#  
50  
1
1
TEMP. SWITCH 12 V “C” .................. 1 ........... INCLUDES ITEMS W/#  
MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07) — PAGE 83  
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HATZ 1D81Z ENGINE — LIFTING MAGNET/STOPDEVICE ASSY.  
LIFTING MAGNET/S TOP DEVICE ASSY.  
LETTERS IN BOLD INDICATE TYPE OF BONDING ADHESIVE TO BE USED.  
D= LOCTITE 221 H= SILICON E= LOCTITE 648  
PAGE 84 —MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07)  
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HATZ 1D81Z ENGINE — LIFTING MAGNET/STOPDEVICE ASSY.  
LIFTING MAGNET/STOP DEVICE ASSY.  
NO.  
1
PART NO.  
01254602  
50343300  
04021400  
04021800  
04021700  
50144500  
50328300  
05015100  
PART NAME  
LEVER CPL.  
QTY.  
REMARKS  
1
1
1
1
1
1
1
1
2
O-RING 4.6 X 1.85  
BUSH  
3
4
SPRING  
LEVER  
FLAT WASHER 6.4  
HEXAGON NUT M 6  
SUPPORT SOLENOID  
5
6
7
8
9#  
10#  
11  
13  
14  
BUSHING ......................................... 1 ........... CANNOT BE PURCHASED SEPARATELY  
LINKAGE .......................................... 1 ........... CANNOT BE PURCHASED SEPARATELY  
SHAFT + LEVER STOPMAG .......... 1 ........... INCLUDES ITEMS W/#  
01515300  
01515500  
05058400  
LIFTING MAGNET 12 V ................... 1 ........... INCLUDES ITEMS W/  
*
CABLE HOLDER  
1
*
15  
STOP MAGNET ............................... 1 ........... CANNOT BE PURCHASED SEPARATELY  
*
16  
05023501  
50170900  
50144400  
50216300  
50112600  
50366800  
50114300  
40037300  
03999001  
03996600  
03565400  
05069200  
04021700  
50144500  
50328300  
50248900  
CONSOLE  
1
2
2
3
4
2
2
2
1
1
1
1
1
1
1
1
17  
18  
19  
20  
22  
23  
24  
25  
26  
27  
28  
29  
30  
31  
LOCK WASHER 6  
HEXAGON NUT M 6  
WASHER 5.3  
ALLEN SCREW M 5 X 10  
STUD M 6 X 12  
DISC 6.4  
CLAMP 8-12  
FUEL HOSE 7/70  
SHAFT  
RUBBER SLEEVE  
BUSH F. BELT TENSION  
LEVER  
WASHER  
HEXAGON NUT M6  
BELLOWS  
32  
*
MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07) — PAGE 85  
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EXPLANATION OF CODE IN REMARKS COLUMN  
PAYMENT TERMS  
5. Partsmustbeinnewandresalablecon- Multiquipreservestherighttoquoteandsell  
dition,intheoriginalMultiquippackage(if directtoGovernmentagencies,andtoOriginal  
any), and with Multiquip part numbers Equipment Manufacturer accounts who use  
Terms of payment for parts are net 30 days.  
FREIGHTPOLICY  
clearlymarked.  
our products as integral parts of their own  
products.  
All parts orders will be shipped collect or  
prepaidwiththechargesaddedtotheinvoice.  
All shipments are F.O.B. point of origin.  
Multiquip’sresponsibilityceaseswhenasigned  
manifesthasbeenobtainedfromthecarrier,  
andanyclaimforshortageordamagemustbe  
settledbetweentheconsigneeandthecarrier.  
6. Thefollowingitemsarenotreturnable:  
SPECIALEXPEDITINGSERVICE  
a. Obsolete parts. (If an item is in the  
price book and shows as being re- A$35.00surchargewillbeaddedtotheinvoice  
placedbyanotheritem,itisobsolete.) forspecialhandlingincludingbusshipments,  
insuredparcelpostorincaseswhereMultiquip  
mustpersonallydeliverthepartstothecarrier.  
(such as gaskets, seals, “O” rings,  
b. Any parts with a limited shelf life  
andotherrubberparts)thatwerepur- LIMITATIONSOFSELLER’SLIABILITY  
MINIMUMORDER  
chasedmorethansixmonthspriorto  
thereturndate.  
Multiquip shall not be liable hereunder for  
damagesinexcessofthepurchasepriceofthe  
TheminimumchargeforordersfromMultiquip  
is $15.00 net. Customers will be asked for  
instructionsregardinghandlingofordersnot  
meetingthisrequirement.  
c. Anylineitemwithanextendeddealer item with respect to which damages are  
netpriceoflessthan$5.00.  
claimed, and in no event shall Multiquip be  
liable for loss of profit or good will or for any  
otherspecial,consequentialorincidentaldam-  
ages.  
d. Special order items.  
RETURNEDGOODSPOLICY  
e. Electricalcomponents.  
f. Paint,chemicals,andlubricants.  
g. Decalsandpaperproducts.  
h. Itemspurchasedinkits.  
Returnshipmentswillbeacceptedandcredit  
willbeallowed,subjecttothefollowingprovi-  
sions:  
LIMITATIONOFWARRANTIES  
Nowarranties,expressorimplied,aremade  
in connection with the sale of parts or trade  
accessoriesnorastoanyenginenotmanufac-  
tured by Multiquip. Such warranties made in  
connectionwiththesaleofnew,completeunits  
are made exclusively by a statement of war-  
rantypackagedwithsuchunits,andMultiquip  
neitherassumesnorauthorizesanypersonto  
assume for it any other obligation or liability  
whatever in connection with the sale of its  
products.Apartfromsuchwrittenstatementof  
warranty, there are no warranties, express,  
impliedorstatutory,whichextendbeyondthe  
descriptionoftheproductsonthefacehereof.  
1. AReturnedMaterialAuthorizationmust  
be approved by Multiquip prior to ship-  
ment.  
7. Thesenderwillbenotifiedofanymaterial  
receivedthatisnotacceptable.  
2. ToobtainaReturnMaterialAuthorization,  
alistmustbeprovidedtoMultiquipParts  
Salesthatdefinesitemnumbers,quanti-  
ties, and descriptions of the items to be  
returned.  
8. Suchmaterialwillbeheldforfiveworking  
days from notification, pending instruc-  
tions.Ifareplyisnotreceivedwithinfive  
days,thematerialwillbereturnedtothe  
senderathisexpense.  
a. Thepartsnumbersanddescriptions  
must match the current parts price  
list.  
9. Creditonreturnedpartswillbeissuedat  
dealer net price at time of the original  
purchase,lessa15%restockingcharge.  
b. The list must be typed or computer  
generated.  
10. In cases where an item is accepted, for  
which the original purchase document  
can not be determined, the price will be  
basedonthelistpricethatwaseffective  
twelvemonthspriortotheRMAdate.  
c. The list must state the reason(s) for  
thereturn.  
Effective: February 22, 2006  
d. The list must reference the sales  
order(s)orinvoice(s)underwhichthe  
itemswereoriginallypurchased.  
11. Credit issued will be applied to future  
purchasesonly.  
e. The list must include the name and  
phonenumberofthepersonrequest-  
ingtheRMA.  
PRICINGANDREBATES  
Prices are subject to change without prior  
notice.Pricechangesareeffectiveonaspe-  
cificdateandallordersreceivedonorafterthat  
datewillbebilledattherevisedprice.Rebates  
3. AcopyoftheReturnMaterialAuthoriza-  
tionmustaccompanythereturnshipment.  
4. Freight is at the sender’s expense. All forpricedeclinesandaddedchargesforprice  
partsmustbereturnedfreightprepaidto increaseswillnotbemadeforstockonhand  
Multiquip’sdesignatedreceivingpoint.  
atthetimeofanypricechange.  
PAGE 86 —MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07)  
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NOTES  
MQ41TDH TRASH PUMP — PARTS & OPERATION MANUAL — REV. #3 (04/02/07) — PAGE 87  
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OPERATION AND PARTS MANUAL  
HERE’S HOW TO GET HELP  
PLEASE HAVETHE MODEL AND SERIAL  
NUMBER ON-HANDWHEN CALLING  
UNITED STATES  
Multiquip Corporate Office  
18910 Wilmington Ave.  
Carson, CA 90746  
MQ Parts Department  
800-427-1244  
Tel. (800) 421-1244  
Fax (800) 537-3927  
Fax:800-672-7877  
Fax:310-637-3284  
310-537-3700  
Contact: [email protected]  
Mayco Parts  
800-306-2926  
310-537-3700  
Warranty Department  
800-421-1244, Ext. 279 Fax:310-537-1173  
310-537-3700, Ext. 279  
Fax:800-672-7877  
Fax:310-637-3284  
Service Department  
800-421-1244  
Technical Assistance  
800-478-1244  
Fax:310-537-4259  
Fax:310-631-5032  
310-537-3700  
MEXICO  
MQ Cipsa  
UNITED KINGDOM  
Multiquip (UK) Limited Head Office  
Hanover Mill, Fitzroy Street,  
Ashton-under-Lyne,  
Carr. Fed. Mexico-Puebla KM 126.5  
Momoxpan, Cholula, Puebla72760Mexico  
Contact:p[email protected]  
Tel: (52) 222-225-9900  
Fax: (52) 222-285-0420  
Tel: 0161 339 2223  
Fax: 0161 339 3226  
Lancashire OL7 0TL  
Contact:[email protected]  
CANADA  
Multiquip  
BRAZIL  
Multiquip  
4110IndustrielBoul.  
Laval, Quebec, Canada H7L 6V3  
Contact:j[email protected]  
Tel: (450) 625-2244  
Fax: (450) 625-8664  
Av. Evandro Lins e Silva, 840 - grupo 505 Tel: 011-55-21-3433-9055  
Barra de Tijuca - Rio de Janeiro Fax: 011-55-21-3433-9055  
Contact:[email protected],s[email protected]  
© COPYRIGHT 2008, MULTIQUIP INC.  
Multiquip Inc and the MQ logo are registered trademarks of Multiquip Inc. and may not be used, reproduced, or altered without written permission. All other trademarks are  
the property of their respective owners and used with permission.  
This manual MUST accompany the equipment at all times. This manual is considered a permanent part of the equipment and should remain with the unit if resold.  
The information and specifications included in this publication were in effect at the time of approval for printing. Illustrations, descriptions, references and technical data  
contained in this manual are for guidance only and may not be considered as binding. Multiquip Inc. reserves the right to discontinue or change specifications, design or  
the information published in this publication at any time without notice and without incurring any obligations.  
Your Local Dealer is:  
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