Section IV. OPERATOR'S MAINTENANCE - TM-5-4320-237-150037

TM 5-4320-237-15

PAR

REF

ITEM

ENGINE. Turn the engine crankshaft with starting rope and

check for unusual noises or binding. Check that adequate com-

pression resistance is noted when cranking against compression.

AIR CLEANER. Empty and clean dust cup. Remove air cleaner

28f

body and flush out element with approved cleaning solvent. Shake

dry and replace. Fill and replace dust cup. Reference figure 11.

MAGNETO. Replace pitted or burned magneto points. Proper

gap adjustment is 0.015 inch. (Check adjustment every 500

operating hours. )

VALVES AND TAPPETS. Check valve tappet clearance. Tappet

clearance with engine cold must be as follows:

Inlet valve-0.008 inch Exhaust valve-0.014 inch Report in-

correct valve tappet clearance to direct support maintenance.

MUFFLER. Check muffler for dents, holes, cracks or other

damage. Replace muffler if damaged beyond serviceability.

PUMP. Check pump for loose mounting, cracked housing, damaged

threads and missing plugs. Tighten loose mounting bolts and re-

place missile plugs. Report pump damage to direct support main-

tenance.

SUCTION HOSE. Check suction hose for cracks, leaks, breaks,

cuts, and wear. Replace leaking, worn, or damaged hose.

NOTE 1. OPERATIONAL TEST, During operation, check for

unusual noises or vibration.

Figure 13--Continued.

Section IV. OPERATOR'S MAINTENANCE

33. Fuel Strainer Service

32. General

The instructions in this section are pub-

Refer to figure 14 and service the fuel

lished for the information and guidance of the

strainer.

operator to maintain the pumping assembly.