Honda CRF250X, Owner'S Manual & Competition Handbook

Page: 77 / 180

Valve Clearance
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 solution (a
mixture of 1/2 engine oil and 1/2
molybdenum disulfide grease (containing
more than 3% molybdenum disulfide
additive) to outer surface of the each valve
lifters.
Install the valve lifters (3).
3. Rotate the primary drive gear lock bolt (4)
(crankshaft) clockwise and align the punch
mark (5) with the index mark(6).
(7) cam sprocket (9) cylinder head
(8) timing marks (10) cam chain
5. Apply grease to the set rings and install it
onto the camshaft holders (11).
Install the camshaft holder bolts (12).
TORQUE: 12 lbf·ft (16 N·m, 1.6 kgf·m)
Tighten the camshaft holder bolts in a criss-cross
pattern in 2 or 3 steps.
(11) camshaft holders (12) camshaft holder bolts
(2)
(2)
(1)
(4)
(5)
(6)
(12)
(12)
(11)
Servicing Your Honda
71
(3) valve lifters
(4) primary drive gear lock bolt
(5) punch mark
(6) index mark
4. Apply molybdenum oil solution to the cam
journals and cam lobes.
Place the cam sprocket (7) and align the
timing mark (8) on the cam sprocket with the
top surface of the cylinder head (9).
Install the cam chain (10) over the sprocket
without rotating the sprocket.
(cont’d)
(3)
(8)
(9)
(8)
(10)
(7)