Yamaha YZF-R125 Service Manual page 188

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5. Turn:
• Crankshaft
(several turns counterclockwise)
6. Check:
• "I" mark "a"
Align the "I" mark on the generator rotor with
the stationary pointer "b" on the generator
cover.
• "I" mark "c"
Align the "I" mark on the camshaft sprocket
with the stationary pointer "d" on the cylinder
head.
Out of alignment → Correct.
Refer to the installation steps above.
d
c
7. Tighten:
• Camshaft sprocket bolt
Camshaft sprocket bolt
30 Nm (3.0 m·kg, 22 ft·lb)
ECA5D71013
CAUTION:
Be sure to tighten the camshaft sprocket bolt
to the specified torque to avoid the possibil-
ity of the bolt coming loose and damaging
the engine.
8. Measure:
• Valve clearance
Out of specification → Adjust.
Refer to "ADJUSTING THE VALVE CLEAR-
ANCE" on page 3-3.
b
a
5-13
CYLINDER HEAD