Honda CRF450X 2005 Service Manual page 184

CYLINDER HEADIV ALVES
9-12
Inspect the rocker arm shaft for wear or damage.
Measure the rocker arm shaft 0.0.
SERVICE LIMIT: 11.92 mm (0.469 in)
Calculate the rocker arm·to·shaft clearance.
SERVICE LIMIT: 0.10 mm (0.004 in)
Turn the outer race of the camshaft bearing wi th , - - - - - - - - - - - - - - -- ---,
you r finger.
The bearing should turn smoothly and quietly.
Also check that the bea ring inner race fits tightly on
the camshaft.
Replace the camshaft assembly if the bearing does
not turn smoothly, quietly, or if
it
fits loosely on the
camshaft.
Check the cam lobe surfaces for scoring or evidence
of insufficient lubricant.
Measure the height of each cam lobe.
SERVICE LIMITS:
IN: 36.890 mrn 11 .4524 In)
EX:
35.063 mm (1 .3804 in)
NOTE:
Check the rocker arm if the cam lobe and valve lift-
ers are worn or damage.
Check the decompressor assembly for wear or dam· ' O -E -C -O - M - P -R -E -S-S -O -R - A - S- S-E-M - e-L-Y---- - - - - ,
age. SPRING
Check the balancer weight and spring for damage
or
fatigue.
BALANCER WEIGHT
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