Section VI. MAINTENANCE OF FUEL STRAINER

(2) Check that the oil is up to the oil level

mark in the oil cup. If it is not, fill the cup to the

required level with the same grade of oil that is used

in the engine crankcase.

b. Every third day, or more frequently under

conditions of extreme dust, clean and refill the oil

cup as follows:

(1) Remove the wing nut (1, fig. 3-1) and

washer (2) that secure the filter element (3) to the

air cleaner oil cup (4). Lift out the filter element.

(2) Lift off the oil cup (4). Dump the contents

of the cup and wash the cup with an approved

cleaning solvent; dry thoroughly.

(3) Wash the filter element thoroughly in

solvent. Shake dry.

(4) Make sure the cork gasket (5) is in place

and position the oil cup on the air intake elbow. Fill

the oil cup to the indicated full level with the same

grade of oil as is used in the engine crankcase.

(5) Position the filter element (3) on the oil

cup (4) and secure with the wing nut (1) and

washer (2).

Wing nut

Washer

Filter element

Oil cup

Gasket

Figure 3-1. Air cleaner installation.

Section VI. MAINTENANCE OF FUEL STRAINER

3-10. General

The fuel strainer is installed in the fuel system

between the fuel tank and the engine carburetor. It

filters dirt, sand, and moisture from the fuel,

preventing these foreign materials from disrupting

the operation of the carburetor.

3-11. Fuel Strainer Service

a. Close fuel shutoff cock (1, fig. 3-2).

Fuel shutoff cock

Fuel bowl

Filter element

Figure 3-2. Fuel strainer installation.

Bail nut

Bail

3-4