3-6. PROPULSION SYSTEM (Cont).
(d) Particular attention should be paid to storing of parts and subassemblies, after removal and cleaning
and prior to assembly, in such a place or manner as to keep them clean. If there is any doubt as to
the cleanliness of such parts, they should be recleaned.
(e) When assembling an engine or any part thereof, refer to the table of torque specifications for proper
bolt, nut and stud torques.
(7) Work Safety.
(a) A maintenance person can be severely injured if caught in the pulley or belts of an engine that is
accidentally started. To avoid such a misfortune, take these precautions before starting to work on
an engine: Tag all electrical switches so that the electrical circuit is disrupted. Accidental contact
with the starter button will not produce an engine start.
(b) 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 accident
(c) 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 component, make sure the lifting de- vice 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 cleaning an air silencer, 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.
5. Avoid the use of carbon tetrachloride as a cleaning agent because of the harmful vapors that it
releases. Use perchlorethylene or trichlorethylene. However, while less toxic than other chlorinated
solvents, use these cleaning agents with caution. Be sure the work area is adequately ventilated and
use protective gloves, goggles or face shield and apron.