Yamaha XC50V Service Manual page 61

ADJUSTING THE VALVE CLEARANCE
d
c
1
2
1
d. Measure the valve clearance with a thick-
ness gauge 1.
Out of specification
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6. Adjust:
8valve clearance
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a. Remove the valve pad 2 with a magnetic
bar 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.
b. Select the proper valve pad from the follow-
ing table.
Valve pad thickness range
Nos. 1.20 (0.047in)
120 ~ 240 ~ 2.40 mm
(0.095 in)
c. Round off the original valve pad number
according to the following table.
3-10
CHK
ADJ
Adjust.
Available valve
pads
25 thicknesses in
0.05 mm (0.002 in)
increments