8. CYLINDER HEAD/VALVES
8-10
MXU 500
Camshaft
Support both ends of the camshaft with V-
blocks and check the camshaft runout with a
dial gauge.
Service limit: 0.05 mm (0.002 in)
Inspect camshaft lobes for
pitting/scratches/blue discoloration.
Measure the cam lobe height.
Service Limits: IN : 37.11 mm (1.4844 in)
EX: 36.86 mm (1.4744 in)
If any defects are found, replace the camshaft
with a new one, then inspect lubrication
system.
Check the decompression system by turning
the decompressor cam on the exhaust
camshaft.
You should be able to turn the decompressor
cam clockwise smoothly, but the
decompressor should not turn
counterclockwise.
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