Yamaha SXV60K Owner's Manual page 86

K. Noise or excessive vibration in drive
chain and sprockets
1. Broken V-belt clutch components ...
Ask a Yamaha dealer to inspect.
2. Worn or damaged bearings ... Ask a
Yamaha dealer to inspect.
3. Worn or damaged V-belt with flat spots
... Replace.
4. Worn or damaged idler wheels or
shafts ... Ask a Yamaha dealer to
inspect.
5. Worn or damaged drive track ... Ask a
Yamaha dealer to inspect.
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