If you need to accomplish maintenance for your Yamaha WR 450 F 2TRAC then it will always be a great idea to have access to a Workshop Manual for a reference in case that you need to know ways to remove a specific component for example, the Drive Shaft and fit it again correctly.
Yamaha WR 450 F 2TRAC Workshop Manuals offer you precise diagnostic guides for the car or truck so if something is broken it can help you ascertain what the problem is and tips to make it better. You can then assess if this can be achieved by yourself or in the event the job is too big you could make a booking for your WR 450 F 2TRAC in with a suitable friendly mechanic.
Yamaha WR 450 F 2TRAC manual