Honda 2005 CRF450R Owner's Manual page 62

Camshaft Holder Assembly Removal
1. Record the intake valve and exhaust valve
clearances.
Make sure the piston is at TDC (Top Dead
Center) on the compression stroke (page 55).
2. Remove the cam chain tensioner lifter cover
bolt (1) and sealing washer (2).
(2)
(1) cam chain tensioner lifter cover bolt
(2) sealing washer
Use the tensioner stopper tool.
• Tensioner stopper
3. Turn the tensioner shaft clockwise with the
stopper tool (3) until it stops, in order to
retract the tensioner fully.
Then insert the stopper tool fully to hold the
stopper in the fully retracted position.
(1)
(3)
(3) stopper tool
4. Loosen the cam sprocket bolt (4).
070MG-0010100 Rotate the primary drive gear bolt (crankshaft)
clockwise one turn and remove the other
sprocket bolt. Rotate the primary drive gear
bolt (crankshaft) clockwise one turn again and
remove the other sprocket bolt.
5. Remove the cam sprocket (5) and then attach
a piece of wire to the cam chain (6) to prevent
it from falling into the crankcase.
NOTICE
Do not let the bolts, sprocket and cam chain fall
(3)
into the crankcase.
(4) cam sprocket bolts
(5) cam sprocket
(6) cam chain
Valve Clearance
(6)
(4)
(5)
Servicing Your Honda
(cont'd)
57