Yamaha RX10J Owner's Manual page 91

J. Engine does not upshift or down-
shift properly or engages harshly
1. Worn or damaged V-belt ... Replace the
V-belt or ask a Yamaha dealer to
inspect.
2. Incorrect V-belt clutch settings for alti-
tude or conditions ... Ask a Yamaha
dealer to inspect.
3. Worn or sticking
assembly ... Ask a Yamaha dealer to
inspect.
4. Worn or sticking secondary sheave
assembly ... Ask a Yamaha dealer to
inspect.
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.
primary sheave
9-4