If you want to accomplish maintenance on your Derbi xRace 50 R then it is usually a great idea to possess a Workshop Manual to use as a reference in the event that you want to know the right way to take out a particular component for instance the Wheel and match it again adequately.
Derbi xRace 50 R Workshop Manuals provide you with targeted diagnostic guidelines for the car so if something is wrong it helps you determine what the problem is and some ways to resolve it. After that you can determine if you can do this on your own or if ever the job is simply too big you are able to make a booking for your xRace 50 R right into a decent repair garage.
Derbi xRace 50 R manual