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ITEM 57531 

        

S

AFETY

S

ETU

p

INST

ALLA

TION

M

AINTENANCE

Operating precautions

1. 

CARBON MONOXIDE HAZARD 
Using an engine indoors  
CAN KILL YOU IN MINUTES. 

Engine exhaust contains 

carbon monoxide.  This is a poison 

you cannot see or smell. 

NEVER use inside a home or garage,  

EVEN IF doors and windows are open. 

Only use OUTSIDE and far away from windows, 

doors, and vents.

2.  Keep children away from the equipment, 

especially while it is operating. 

3.  Keep all spectators at least six feet 

from the Engine during operation.

4.  Fire Hazard! Do not fill fuel tank while engine is 

running. Do not operate if gasoline has been spilled. 

Clean spilled gasoline before starting engine. 

Do not operate near pilot light or open flame.

5.  Do not touch engine during use. 

Let engine cool down after use. 

6.  Never store fuel or other flammable 

materials near the engine.

7.  Only use a suitable means of transport and 

lifting devices with sufficient weight bearing 

capacity when transporting the engine.

8.  Secure the engine on transport vehicles to 

prevent it from rolling, slipping, and tilting.

9.  Industrial applications must follow 

OSHA requirements.

10. The engine can produce high noise levels.  

Prolonged exposure to noise levels 

above 85 dBA is hazardous to hearing. 

Wear ear protection when operating the or 

when working nearby while it is operating.

11.  Wear ANSI-approved safety glasses 

and hearing protection during use.

12. People with pacemakers should consult their 

physician(s) before use.  Electromagnetic fields in 

close proximity to a heart pacemaker could cause 

pacemaker interference or pacemaker failure.  

Caution is necessary when near the 

engine’s magneto or recoil starter.

13. Use only accessories that are recommended 

by Harbor Freight Tools for your model.  

Accessories that may be suitable for one 

piece of equipment may become hazardous 

when used on another piece of equipment.

14. Do not operate in explosive atmospheres, 

such as in the presence of flammable 

liquids, gases, or dust.  Gasoline-powered 

engines may ignite the dust or fumes.

15. Stay alert, watch what you are doing and use 

common sense when operating this engine.  

Do not use while tired or under the influence 

of drugs, alcohol or medication.

16. Dress properly.  Do not wear loose clothing or 

jewelry.  Keep hair, clothing and gloves away 

from moving parts.  Loose clothes, jewelry or 

long hair can be caught in moving parts.

17. Parts, especially exhaust system components, 

get very hot during use.  Stay clear of hot parts.

18. Do not cover the engine during operation.
19. Keep the engine and surrounding 

area clean at all times.

20. Do not smoke, or allow sparks, flames, 

or other sources of ignition around the 

equipment, especially when refuelling.

21. Use the equipment, accessories, etc., in 

accordance with these instructions and in the 

manner intended for the particular type of 

equipment, taking into account the working 

conditions and the work to be performed.  

Use of the equipment for operations different from 

those intended could result in a hazardous situation.

22. Do not operate the equipment with known 

leaks in the engine’s fuel system.

23. When spills of fuel or oil occur, they must be 

cleaned up immediately.  Dispose of fluids and 

cleaning materials as per any local, state, or 

federal codes and regulations.  Store oil rags in 

a bottom-ventilated, covered, metal container.

24. Keep hands and feet away from moving parts.   

Do not reach over or across 

equipment while operating.

25. Before use, check for misalignment or binding of 

moving parts, breakage of parts, and any other 

condition that may affect the equipment’s operation.  

If damaged, have the equipment serviced 
before using.

  Many accidents are caused 

by poorly maintained equipment.

26. Use the correct equipment for the application.  

Do not modify the equipment and do not use the 

equipment for a purpose for which it is not intended.

Summary of Contents for 57531

Page 1: ...l near the assembly diagram or month and year of purchase if product has no number Keep this manual and the receipt in a safe and dry place for future reference 21j When unpacking make sure that the p...

Page 2: ...0 63 Quart Bore x Stroke 70mm x 55mm Compression Ratio 8 5 1 Torque Specification for Cylinder Head Bolts 26 30 Nm 19 22 ft lb Rotation viewed from PTO power takeoff the output shaft Counterclockwise...

Page 3: ...rning Risk of Respiratory Injury Operate engine OUTSIDE and far away from windows doors and vents WARNING marking concerning Risk of Fire while handling fuel Do not smoke while handling fuel WARNING m...

Page 4: ...ece of equipment may become hazardous when used on another piece of equipment 14 Do not operate in explosive atmospheres such as in the presence of flammable liquids gases or dust Gasoline powered eng...

Page 5: ...by a qualified repair person using only identical replacement parts This will ensure that the safety of the equipment is maintained Do not attempt any service or maintenance procedures not explained i...

Page 6: ...r the Engine to cool and unplug the spark plug wire s before assembling or making any adjustments to the equipment The preparation of this Engine for competitive events and sanctioned racing requires...

Page 7: ...TENANCE Components and Controls Engine Switch Output Shaft Exhaust port LSVWLFN 2LO Fill plug Choke Lever Fuel Line Connector Spark plug Cap Starter Handle Oil Drain plug Carburetor Inlet Fuel pump In...

Page 8: ...ng pages refer to Parts List and Diagrams on page 16 Install Engine 1 Using a motor mount plate specifically designed for the go kart frame to be used both not included install the motor mount onto th...

Page 9: ...fuel pump a Inlet fuel line from fuel tank tank not included b Outlet fuel line to Carburetor c Low pressure pulse tube that is attached to the Pulse Connector not included When installing ensure that...

Page 10: ...th not included to the Carburetor inlet 2 Connect one end of a throttle cable not included to the Carburetor slide Connect the other end to the throttle on the go kart frame Note This engine is not eq...

Page 11: ...s of each piece of equipment will differ depending on factors such as duty cycle temperature air quality fuel quality and other factors Note The following procedures are in addition to the regular che...

Page 12: ...an as described below 2 Cleaning For paper filters To prevent injury from dust and debris wear ANSI approved safety goggles NIOSH approved dust mask respirator and heavy duty work gloves In a well ven...

Page 13: ...ine with dry cloth NOTICE Do not clean using water The water will gradually enter the Engine and cause rust damage Apply a thin coat of rust preventive oil to all metal parts 2 FUEL To protect the fue...

Page 14: ...its may require further cleaning 7 Gently tap side of carburetor float chamber with screwdriver handle 8 Turn Choke to RUN position Remove spark plug and pull the start handle several times to air out...

Page 15: ...park plug cap Engine stops when under heavy load 1 Dirty air filter 2 Engine running cold 1 Clean element 2 Allow engine to warm up prior to operating equipment Engine knocks 1 Old or low quality gaso...

Page 16: ...n Pin 1 15 Piston Clip 2 16 Crankcase Cover Assembly 1 17 Oil Plug 1 18 Dipstick 1 19 Cylinder Head 1 20 Intake Valve 1 21 Exhaust Valve 1 22 Valve Seal 1 23 Valve Spring 2 24 Air Deflector 1 25 Valve...

Page 17: ...Page 17 For technical questions please call 1 888 866 5797 ITEM 57531 SAFETY SETUp INSTALLATION MAINTENANCE Assembly Diagram...

Page 18: ...Page 18 For technical questions please call 1 888 866 5797 ITEM 57531 SAFETY SETUp INSTALLATION MAINTENANCE Mounting Hole Diagram Note Not to scale LQ PP LQ PP LQ P P LQ P P...

Page 19: ...chnical questions please call 1 888 866 5797 ITEM 57531 SAFETY SETUp INSTALLATION MAINTENANCE power Take Off Diagram Note Not to scale 81 5 16 24 UNF LQ PP LQ PP LQ PP LQ PP LQ PP LQ PP 1 79 LQ PP LQ...

Page 20: ...usion or limitation of incidental or consequential damages so the above limitation of exclusion may not apply to you THIS WARRANTY IS EXPRESSLY IN LIEU OF ALL OTHER WARRANTIES EXPRESS OR IMPLIED INCLU...

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