When assembling an engine or any part thereof, refer to the table of torque specifications at the end of each
section for proper bolt, nut, and stud torques.
To ensure a clean engine at time of rebuild, it is important that any plug, fitting, or fastener (including studs)
that intersects with a through hole and comes in contact with oil, fuel, or coolant must have a sealer applied to
A number of universal sealers are commercially available. It is recommended that Loctite J 26558-92 pipe
sealer with teflon, or equivalent, be used.
Certain plugs, fittings, and fasteners available from the Parts Depot already have a
sealer applied to the threads. This precoating will not be affected when the pipe
sealer with teflon is also applied.
The sealer information above must not be confused with International Compound
No. 2, which is a lubricant applied before tightening certain bolts. Use International
Compound No. 2 only where specifically stated in the manual.
A serviceman can be severely injured if caught in the pulleys, belts, or fan of an
engine that is accidentally started. To avoid such a misfortune, take these
precautions before starting to work on an engine:
Disconnect the battery from the starting system by removing one or both of the battery cables. With the
electrical circuit disrupted, accidental contact with the starter button will not produce an engine start.
Make sure the mechanism provided at the governor for stopping the engine is in the stop position. This will
mean the governor is in the no-fuel position. The possibility of the engine firing by accidentally turning the fan
or, in the case of vehicle application, by being bumped by another vehicle is minimized.
Some Safety Precautions To Observe When Working On The Engine
1. Consider the hazards of the job and wear protective gear such as safety glasses, safety shoes, hard-hat,
etc. to provide adequate protection.
2. When lifting an engine, make sure the lifting device is fastened securely. Be sure the item to be lifted does
not exceed the capacity of the lifting device.
3. Always use caution when using power tools.
4. When using compressed air to clean a component, such as flushing a radiator or cleaning an air cleaner
element, use a safe amount of air. Recommendations regarding the use of air are indicated throughout the
manual. Too much air can rupture or in some other way damage a component and create a hazardous
situation that can lead to personal injury.