Yamaha Fazer FZ8-SA, Service Manual

Page: 280 / 610

CAMSHAFTS
5-15
c. Install the dowel pins and camshaft caps.
TIP
• Tighten the camshaft cap bolts in stages and
in a crisscross pattern, working from the
inner caps out.
• Do not turn the camshaft when measuring
the camshaft journal-to-camshaft cap clear-
ance with the Plastigauge®.
d. Remove the camshaft caps and then mea-
sure the width of the Plastigauge® “2”.
▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲
5. Measure:
• Camshaft journal diameter “a”
Out of specification
→
Replace the cam-
shaft.
Within specification
→
Replace the cylin-
der head and the camshaft caps as a set.
EAS23870
CHECKING THE TIMING CHAIN AND CAM-
SHAFT SPROCKET
1. Check:
• Timing chain
Damage/stiffness
→
Replace the timing
chain and camshaft and camshaft
sprocket as a set.
2. Check:
• Camshaft sprocket
More than 1/4 tooth wear “a”
→
Replace
the camshaft sprockets and the timing
chain as a set.
EAS23950
CHECKING THE TIMING CHAIN GUIDES
The following procedure applies to all of the
camshaft sprockets and timing chain guides.
1. Check:
• Timing chain guide (exhaust side) “1”
• Timing chain guide (intake side) “2”
• Timing chain guide (top side) “3”
Damage/wear
→
Replace the defective
part(s).
Camshaft cap bolt
10 Nm (1.0 m·kgf, 7.2 ft·lbf)
Camshaft journal diameter
24.459–24.472 mm (0.9630–
0.9635 in)
a. 1/4 tooth
b. Correct
1. Timing chain
2. Camshaft sprocket