ADJUSTING THE VALVE CLEARANCE
CHK
ADJ
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• • • • • • • • • • • • • • • • • • • • • • •
a. Turn the crankshaft counterclockwise.
b. When the piston is at TDC on the compres-
sion stroke, align the punch mark a in the
camshaft sprocket with the stationary b on
the plate.
c. Align the TDC mark c on the AC magneto
rotor with the stationary pointer d on the
crankcase cover.
d. Measure the valve clearance with a thick-
ness gauge
®
.
Out of specification
-»
Adjust.
• • • • • • • • • • • • • • • • • • • • • • •
7. Adjust:
valve clearance
• • • • • • • • • • • • • • • • • • • • • • •
a. Remove the timing chain tensioner and cam-
shaft sprocket.
b. Remove the head nuts, bolts and plate.
c. Remove the rocker arm shaft, rocker arm
and collar.
d. Remove the valve p a d 2 with a magnetic
b a r 1 .
NOTE:
8 Cover the timing chain opening with a rag
to prevent the valve pad from falling into the
crankcase.
8 Make a note of the position of each valve
pad so that they can be installed in the cor-
rect place.
e. Select the proper valve pad from the follow-
ing table.
Valve pad thickness range
Available valve
pads
Nos.
120 ~ 240
1.20 (0.0472in)
~ 2.40 mm
(0.0945 in)
25 thicknesses in
0.05 mm (0.002 in)
increments
f. Round off the original valve pad number ac-
cording to the following table.
3-11
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