Honda CRF450R 2009 Service Manual page 258

CYLINDER HEADNALVES
Install the decompressor weight stopper pin into the
camshaft
Install the camshaft bearing with its groove side facing
out.
Hook the upper side spring end to the decompreS$or
weIght as shown.
Inslallthe camshaft (page 9-32).
CYLINDER HEAD REMOVAL
Remove the following'
- '09 - '14 Ignition coil (page 17-16)
- Exhaust
pipe
(page 3-15)
- Throttle body (page 6-64)
- Camshaft (page 9-10)
- Rocker arm (page 9-11)
Drain the coolant (page 7-9).
Be
sure/o mark the
Remove the valve lifters from the cylinder head.
valve liflers so they
can be installed m
their anginal
posllions.
The shims may slick to the inside of the valve lifters.
Do not allow the shims to drop into the crankcase.
Be
careful
no/
to
Remove the shims.
drop the shtms into
the cronkcase
9·16
The shims can be easily removed
with
tweezers or a
magnet
Mark aU valve shims so they can be Installed in their
original posItion.
STOPPER PIN
'09 shown: BEARING SPRING END