Honda CRF450X 2005 Service Manual page 212

CYLINDER HEADIVALVES
Apply molybdenum oil solution to the outer surface
~
VALVE
of each valve lifter.
m
Instal! the valve Install the valve lifters into the camshaft holder.
lifters in their
originallocarion.
When installing the
cam sprocket face
the decompressor
pin to the front
side.
9-40
Make sure the dowel pins are installed in the cam-
shaft holder.
Apply molybdenum oil solution to the cam lobes.
Install the camshaft holder assembly with the intake
cam lobes facing up.
Apply oil to the camshaft holder mounting bolt
threads, and install them.
Tighten the bolts in a crisscross pattern in two or
three steps to the specified torque.
TORQUE: 14 N·m (1 .4 kgf·m, 10 Ibf.ft!
Install the cam chain onto the cam sprocket.
When installing the cam sprocket, align the follow-
ing:
Decompressor weight hole with the setting pin of
~~!";::7:-:f.
the decompressor shaft
- Bolt hole of the cam sprocket with the camshaft
- Index li ne on the cam sprocket with the
-D."
mark
of the camshaft holder
Clean and apply locking agent to the cam sprocket
;~~~~~~~~
bolt threads.
Temporari ly install the one cam sprocket bolt.
Turn the crankshaft clockwise one turn, then i nstall
and tighten the other cam sprocket bolt to the speci-
fied torque.
TOROUE: 20 N·m (2.0 kgf·m, 15 Ibf.ft)
Turn the crankshaft clockwise one turn again, and
tighten the remaining cam sprocket bolt to the
specified torque.
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