Section IV. MAINTENANCE OF THE ENGINE

Section IV. MAINTENANCE OF THE ENGINE

3-7.

Servicing

3-6.

General

Check the crankcase oil level daily as described in

The engine is a conventional valve-in-head, four cycle,

liquid cooled, internal combustion type. A gear type oil

paragraph 3-2d

pump supplies lubricating oil to the moving parts of the

engine.

Section V. MAINTENANCE OF THE AIR CLEANER

3-9.

Servicing

3-8.

General

The air cleaner should be serviced at the recommended

The oil bath type air cleaner is mounted on the left side

intervals or more frequently under dusty conditions.

of the engine and is connected to the carburetor by a

Refer to paragraph 3-2 (e) for a servicing procedure.

flexible hose. It prevents harmful dust and foreign

The air cleaner and connections should always be tightly

particles from entering the carburetor and engine. Air

secured to prevent dust or dirt entry.

enters the air cleaner and passes through an oil bath

before entering the carburetor.

Caution: Never run the engine with the air

cleaner removed.

Section VI. MAINTENANCE OF THE FUEL TANK

3-11. Servicing

3-10. General

At periodic intervals remove the filler assembly from the

The capacity of the fuel tank is 8.3 gallons. Always

top of the tank and clean the strainer. Also remove

clean the area around the fuel tank before refilling. Fill

drain plug from the bottom of the tank and allow

the tank at the end of each operating period to keep

sediment or water to drain out.

condensation to a minimum.

Section VII. MAINTENANCE OF THE RADIATOR

a. Remove the mounting bolts which secure the

3-12. General

grille to the counterweight and remove the grille.

The radiator is of the fin and tube type, utilizing a

b. Clean the radiator fins with an air blast carrying a

pressure filler cap which maintains a pressure of

grease solvent, such as oleum spirits, directed at the

approximately 4 psi. An overflow tube is provided on

radiator core and passing through the grille side.

the radiator to allow the escape of coolant and / or

c. Reinstall the radiator grille in the reverse order of

pressure when the pressure raises above the limit of the

pressure cap.

removal.

d. When servicing the system for warm weather

operation, add a rust inhibitor to the water. Follow the

3-13. Servicing

directions on the container.

Warning: Provide adequate ventilation of the

working area during the cleaning operation to avoid

possible toxic effects of the cleaning spray. Never

use gasoline, fuel oil, or kerosene to clean the

radiator.

3-4