Honda CRF250R 2005 Owner's Manual page 61

CamShaft Removal
1. Record the intake valve clearance and exhaust
valve clearance.
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
3. Make a tensioner shaft stopper tool (3) out of
a thin piece of steel (0.8 mm thick) using the
diagram.
(3)
(1)
7.0 mm
8.5 mm
4. 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.
(3)
(3) stopper tool
Valve Clearance
12.0 mm
3.5 mm
(3)
(cont'd)
57
Servicing Your Honda