If you choose to execute maintenance on your Derbi GP 1 Racing then it will always be a great idea to have access to a Workshop Manual to use as personal reference in the event that you want to know proven methods to take off a specific component for instance the Wheel and install it again in the correct manner.
Derbi GP 1 Racing Workshop Manuals gives you certain diagnostic wisdom with regards to your automobile therefore if something is broken it helps you understand what the problem is and some ways to repair it. You will be able to decide if this can be done yourself or if ever the job is simply too big you can book your GP 1 Racing in with a decent repair garage.
Derbi GP 1 Racing manual