Yamaha YFM250RX 2008 Service Manual page 130

CYLINDER HEAD
6. Turn:
• Crankshaft
(several turns counterclockwise)
7. Check:
• "I" mark
Align the "I" mark on the pickup coil rotor
with the stationary pointer
case cover.
• "I" mark
Align the "I" mark on the camshaft sprocket
with the stationary pointer
der head.
Out of alignment → Correct.
Refer to the installation steps above.
8. Tighten:
• Camshaft sprocket bolt
Camshaft sprocket bolt
60 Nm (6.0 m•kg, 44 ft•lb)
CAUTION:
Be sure to tighten the camshaft sprocket
bolts to the specified torque to avoid the
possibility of the bolts coming loose and
damaging the engine.
9. Measure:
• Valve clearance
Out of specification → Adjust.
Refer to "ADJUSTING THE VALVE CLEAR-
ANCE" in chapter 3.
4-14
ENG
on the crank-
on the cylin-