I'm at 500 miles now so I called my dealer and asked - $180 for the service
- oil change
- rear diff change
- hookup to the computer and look for any issues
- check everything over.
- The book calls for 1.2 hrs of shop time if I heard him correctly.
Pretty sure it's a money maker for them - basically another way for them to tack on another $100 for the 5 year Y.E.S. I purchased. Otherwise I'd do the fluid change myself and pocket the c-note and change.
It is not nessecary for you to have the dealership do the 600 mile check. I would 100% recommend the fluid change both rear diff and the engine/filter. Use Yamaha brand/recommended fluids and keep your receipts. It'll help if you need to make a warranty claim.