3 - 4
CHK
ADJ
ADJUSTING THE VALVE CLEARANCE
5. Remove:
• crankshaft end accessing screw
1
1
6. Measure:
• valve clearance
Out of specification
→
Adjust.
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a. Turn the crankshaft counterclockwise.
b. When the piston is at the top dead center
(TDC) on the compression stroke, align the
“I” mark
a
on the camshaft sprocket with
the stationary pointer
b
on the cylinder
head.
Valve clearance (cold)
Intake valve
0.09 ~ 0.13 mm
(0.0035 ~ 0.0051 in)
Exhaust valve
0.16 ~ 0.20 mm
(0.0063 ~ 0.0079 in)
a
b
c. Measure the valve clearance with a thick-
ness gauge
1
.
Out of specification
→
Adjust.
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Thickness gauge
90890-03180
Feeler gauge set
YU-26900-9
1
Содержание YXR70FX
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