Honda 2007 CRF250R, Owner'S Manual

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Servicing Your Honda
61
Valve Clearance
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 (10) over the sprocket
without rotating the sprocket.
(4) primary drive gear bolt
(5) punch mark
(6) index mark
(7) cam sprocket
(8) timing mark
(9) surface of the cylinder head
(10) cam chain
(4) (6)
(5)
(7)
(10)
(9)
(8)
Camshaft Installation
1. Install the newly selected shims (1) on the
valve retainers (2).
Do not let the shims fall into the crankcase.
NOTICE
(1) shims (2) valve retainers
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 surface of the cam
and outer surface of the each the valve lifters
(3).
3. Install the valve lifters and camshaft into the
cylinder head.
(3) valve lifters
4. Rotate the primary drive gear bolt (4)
(crankshaft) clockwise and align the punch
mark (5) with the index mark (6).
(2)
(1)
(2)
(3)
(cont’d)
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