Valve Lifter Inspection - Yamaha F4 Service Manual

POWR
a
b
a
CRANKCASE, CRANKSHAFT AND CAMSHAFT
a
b
c
2. Measure:
Camshaft lobe dimensions a and b
9
Out of specification ® Replace the
camshaft.
Camshaft lobe dimension:
a a IN : 26.736 ~ 26.836 mm
b b IN: 21.950 ~ 22.050 mm
a a EX: 26.532 ~ 26.623 mm
b b EX: 21.950 ~ 22.050 mm
3. Measure:
Camshaft diameter c
9
Out of specification ® Replace the
camshaft.
Camshaft diameter (journal):
14.934 ~ 14.984 mm
(0.5880 ~ 0.5889 in)

Valve lifter inspection

1. Inspect:
9 Valve lifter
Wear/Damage ® Replace the valve
lifter.
2. Measure:
Valve lifter outside diameter a
9
Out of specification ® Replace the
valve lifter.
Valve lifter
outside diameter:
7.965 ~7.980 mm
(0.3136 ~0.3142 in)
5-33
(1.0526 ~ 1.0265 in)
(0.8642 ~ 0.8681 in)
(1.0442 ~ 1.0481 in)
(0.8642 ~ 0.8681 in)
E