Yamaha YFM90RA Model Vehicle User Manual


 
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ENG
EAS00389
REMOVING THE CRANKSHAFT ASSEMBLY
1. Remove:
crankshaft assembly
timing chain
TIP
Before removing the crankshaft assembly,
remove the timing chain from the crankshaft
sprocket.
The crankshaft assembly cannot be re-
moved if the timing chain is attached onto
the crankshaft sprocket.
EAS00207
CHECKINGTHE TIMING CHAIN ANDTIMING
CHAIN GUIDES
1. Check:
timing chain
Damage/stiffness
Replace the timing
chain.
2. Check:
timing chain guide
Damage/wear
Replace the timing chain
guide.
CRANKCASE AND CRANKSHAFT