If you need to execute maintenance tasks on your own Derbi DRD Pro 50 R then it is usually a good idea to possess a Workshop Manual for reference in the event that you need to know how to take out a certain part much like the Wheel and match it again correctly.
Derbi DRD Pro 50 R Workshop Manuals offers clear exact diagnostic info for your car so if something is playing up it will help you work out what the problem is and ways to make it better. After that you can determine if this can be done on your own or if ever the job is just too big you can book your DRD Pro 50 R in with a decent car garage.
Derbi DRD Pro 50 R manual