If you need to perform auto repairs for your Gilera GP 800 then it will always be a great idea to possess a Workshop Manual to use as reference if perhaps you need to know proven methods to remove a certain part for example, the Brake Pads and install it again safely.
Gilera GP 800 Workshop Manuals can offer you exact diagnostic wisdom for your vehicle so if something is playing up it helps you understand what the problem is and easy methods to resolve it. After that you can evaluate if this can be done yourself or in case the job is simply too big you could make a reservation for your GP 800 in with a suitable friendly mechanic.
Gilera GP 800 manual