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TM 5-4320-305-24
3-6. REPLACE ENGINE ASSEMBLY (Continued)
2
Rotate crankshaft by rotating crankshaft V-belt pulley (1) clockwise until valves are in the overlap position on cylinder
number one. The exhaust valve (2) should be closing and its valve stem rising. The inlet valve (3) should be opening
and its valve stem going down. Rotate crankshaft another one-half revolution or 180 degrees of clockwise rotation of
the V-belt pulley.
3
Mount adjusting device No. 100640 (1) on cylinder
head assembly (2). Locate pressure screw (3) over
exhaust
valve
and,
turn
pressure
screw
counterclockwise until it contacts valve end of rocker
arm. Continue rotation for six more revolutions to
compress valve spring (4) to the necessary 5.0 mm
to 6.0 mm.
3-26 Change 4
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