Honda CRF450R 2009 Service Manual page 93

RADIATOR COOLANT
Remove the radiator cap (page 7-7).
Check the coolanllevel with the engine cold, it should
be up to the filler neck.
Add the coolant as required (page 7-8).
VALVE CLEARANCE
INSPECTION
Inspect and adjust
Remove the cylinder head cover (page 9·7).
the valve clearance
Remove the crankshaft hole cap and D-ring.
while the engtn6
IS
cold (below 35' CJ
95"F)
Turn the crankshaft clockwise to align the punch mark
on the primary drive gear with the ·S mark on the right
crankcase oover.
Check that the index line on the cam sprocket aligns
with the cUI-oul of the camshaft holder.
Make sure the piston is al TDC (Top Dead Center) on
the compressIOn stroke.
This position can
be
obtained
by
confirming thatlhere is
slack in the rocker arms.
If there is no slack, it is because the piston is moving
through the exhaust stroke to TDC.
Rotate the crankshaft clockwIse one full turn, and
match up
the punch mark on the primary drive gear with
the
"6."
mark on the right crankcase cover again
MAINTENANCE
I
PUNCH MARK
4-13