
3 - 5
CHK
ADJ
ADJUSTING THE VALVE CLEARANCE
7. Adjust:
• valve clearance
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a. Loosen the locknut
1
.
b. Insert a thickness gauge
2
between the
adjusting screw and the valve tip.
c. Turn the adjusting screw
3
with the tappet
adjusting tool
4
until the specified valve
clearance is obtained.
d. Hold the adjusting screw to prevent it from
moving and tighten the locknut to the speci-
fied torque.
e. Measure the valve clearance again.
f. If the valve clearance is still out of specifica-
tion, repeat all of the valve clearance adjust-
ment steps until the specified clearance is
obtained.
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8. Install:
• crankshaft end accessing screw
9. Install:
• spark plug
10.Connect:
• spark plug cap
Tappet adjusting tool
90890-01311
Six piece tappet set
YM-A5970
T
R
.
.
Locknut
14 Nm (1.4 m · kg, 10 ft · lb)
3
4
2
1
T
R
.
.
10 Nm (1.0 m · kg, 7.2 ft · lb)
T
R
.
.
13 Nm (1.3 m · kg, 9.4 ft · lb)