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CHK
ADJ
ADJUSTING THE VALVE CLEARANCE
c. Measure the valve clearance using a thick-
ness gauge .
Out of specification Adjust
3. Adjust:
• valve clearance
a. Loosen the locknut .
b. Insert a thickness gauge between the
adjuster end and the valve end.
c. Turn the adjuster clockwise or counter-
clockwise with the tappet adjusting tool
until the proper clearance is obtained.
d. Hold the adjuster to prevent it from moving
and then tighten the locknut.
e. Measure the valve clearance.
f. If the clearance is incorrect, repeat the
above steps until the proper clearance is
obtained.
Tappet adjusting tool (3 mm)
P/N. YM-08035, 90890-01311
T
R
.
.
Locknut
9 Nm (0.9 m · kg, 6.5 ft · lb)
4. Install:
• C.D.I. magneto cover
• Cylinder head cover
Refer to “CYLINDER HEAD” in chapter 4.
Thickness gauge
90890-03079
Narrow gauge set
YM-34483