Honda CRF250R 2005 Owner's Manual page 64

Valve Clearance
Camshaft Installation
1. Install the newly selected shims (1) on the
valve retainers (2).
NOTICE
Do not let the shims fall into the crankcase.
(1)
(2)
(1) shims (2) valve retainers
60
Servicing Your Honda
2. Apply molybdenum disulfide oil (a mixture of
1/2 engine oil and 1/2 molybdenum disulfide
grease (containing more than 3%
molybdenum disulfide additive)) to the
camshaft and outer surface of the each the
valve lifters (3).
3. Install the valve lifters and camshaft into the
camshaft holder assembly.
(2)
(3) valve lifters
4. Rotate the primary drive gear lock bolt (4)
(crankshaft) clockwise and align the "punch"
mark (5) with the index mark (6).
(4)
(4) primary drive gear lock bolt
(5) "punch" mark
(6) index mark
5. Place the cam sprocket (7) and align the
timing mark (8) on the cam sprocket with the
surface of the cylinder head (9).
Install the cam chain over the sprocket
without rotating the sprocket.
(8)
(3)
(7) cam sprocket
(8) timing mark
(9) surface of the cylinder head
(5) (6)
(7)
(9)
(8)