Yamaha 2012 Grizzly 300 Service Manual page 129

1
3
1
2
CYLINDER HEAD
c. Measure the valve clearance with a thick-
ness gauge .
1
Out of specification → Adjust.
Thickness gauge
90890-03079
Narrow gauge set
YM-34483
3. Adjust:
• valve clearance
a. Loosen the locknut
b. Insert a thickness gauge
adjuster end and the valve end.
c. Turn the adjuster
clockwise with the tappet adjusting tool
until the proper clearance is obtained.
Tappet adjusting tool
90890-01311
Six piece tappet set
YM-A5970
4-9
ENG
.
1
between the
2
clockwise or counter-
3