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TM 5-4320-304-14
TM 08922A-14/1
4-22. ADJUST CYLINDER HEAD AND VALVE ASSEMBLY (Continued)
c.
d.
Check clearance between rocker and valve stem
with a feeler gage. Tappet clearance cold
should be 0.004 inch (0.10 mm). To correct
clearance loosen nut (2).
Adjust screw (3) with screwdriver until feeler
gage can be pulled between rocker and valve
stem with very slight resistance after nut (2)
has been tightened.
6
The adjustment of decompression adjustment screw is
required if the engine does not decompress when the
decompression lever is in position 1.
a. Crank engine in same direction as for adjusting
tappet clearance (see step 5b).
b. Put decompression lever (1) in position 1.
c. Loosen nut (2) using special 10 mm box
wrench and turn adjustment screw (3) clock-
wise until rocker touches valve stem.
d. Turn adjustment screw (3) another half turn
and secure by tightening nut (2).
4-39
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