ENGINE 3-31
CAMSHAFT/AUTOMATIC DECOMPRES-
SION ASSEMBLY
Do not attempt to disassemble the camshaft/automatic
decompression assembly. It is not serviceable.
CAM WEAR
Worn-down cams are often the cause of mistimed valve opera-
tion resulting in reduced power output.
Measure the cam height H using the micrometer. If the cams
are worn to the service limit, replace the camshaft with new a
one.
09900-20202: Micrometer (25 – 50 mm)
Cam height H
Service Limit:
IN: 36.610 mm (1.4413 in)
EX: 36.580 mm (1.4402 in)
AUTOMATIC DECOMPRESSION
Move the automatic decompression weight by hand to inspect if
it is operating smoothly. If the automatic decompression weight
does not operate smoothly, replace it with a new one.