Yamaha Service Manual ~upd~ -

A: No. The owner's manual tells you how to check the oil level. The service manual tells you how to machine a new valve seat.

Using a generic puller instead of the Yamaha rotor holding tool can damage the crankshaft. yamaha service manual

If you are attempting to rebuild a carburetor or diagnose an electrical fault using only the owner’s manual, you are effectively performing surgery with a blindfold on. The Yamaha service manual removes that blindfold. yamaha service manual