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VALVE CLEARANCE INSPECTION AND ADJUSTMENT
4. Check:
Valve clearance
Out of specification → Adjust.
Valve clearance (cold):
Intake valve:
0.08 ~ 0.12 mm
(0.0031 ~ 0.0047 in)
Exhaust valve:
0.10 ~ 0.14 mm
(0.0039 ~ 0.0055 in)
Checking steps:
Turn the crankshaft counterclockwise with
a wrench.
Align the T.D.C. mark a on the rotor with
the align mark b on the crankcase cover
when piston is at T.D.C. on compression
stroke.
Measure the valve clearance using a
feeler gauge 1.
Out of specification → Adjust clearance.
5. Adjust:
Valve clearance
Adjustment steps:
Loosen the locknut 1.
Turn the adjuster 3 in or out with the
valve adjusting tool 2 until specified clear-
ance is obtained.
Turning in →
Valve clearance is decreased.
Turning out →
Valve clearance is increased.
Valve adjusting tool:
YM-08035/90890-01311
Hold the adjuster to prevent it from moving
and tighten the locknut.
Locknut:
8 Nm (0.8 m • kg, 5.8 ft • lb)
3 - 12
INSP
ADJ
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