If you choose to accomplish auto repairs to your Yamaha PW 80 then it is usually recommended to have a Workshop Manual for a reference in case that you need to know proven methods to remove a certain component for instance the Wheel Bearing and fit it again in the correct way.
Yamaha PW 80 Workshop Manuals can offer you precise diagnostic details with regards to your car so if something is wrong it helps you identify what the situation is and how you can make it better. You will be able to evaluate if you can do this by yourself or if the job is just too big you can still make a reservation for your PW 80 in to a trusted repair garage.
Yamaha PW 80 manual