Yamaha T135SE Service Manual page 63

c
d
1
2
a
4
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Yamaha T135 Service Manual
ADJUSTING THE VALVE CLEARANCE
1
3
b
c. Align the TDC mark c on the generator
rotor with the stationary pointer d on the
crankcase cover.
d. Measure the valve clearance with a thick-
ness gauge 1
Out of specification → Adjust.
LLLLLLLLLLLLLLLLLLLLLLLL
10. Adjust:
9valve clearance
MMMMMMMMMMMMMMMMMMMMMMMM
a. Loosen the locknut 1.
b. Insert a thickness gauge 2 between the
end of the adjusting screw and the valve tip.
c. Turn the adjusting screw 3 in direction a
or b until the specified valve clearance is
obtained.
Direction a a
Direction b b
Tappet adjusting tool 4 4
90890-01311
9 Hold the adjusting screw to prevent it from
moving and tighten the locknut to specifica-
tion.
Locknut
7 Nm (0.7 m·kg, 5.0 ft·lb)
d. Measure the valve clearance again.
e. If the valve clearance is still out of specifica-
tion, repeat all of the valve clearance
adjustment steps until the specified clear-
ance is obtained.
LLLLLLLLLLLLLLLLLLLLLLLL
3-9
CHK
ADJ
Valve clearance is
increased.
Valve clearance is
decreased.