Yamaha RST90K Owner's Manual download pdf (Page 91)

9-4

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 primary sheave

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.

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