If you choose to carry out maintenance tasks on your Derbi Senda DRD Racing 50 SM then it will always be recommended to have access to a Workshop Manual to keep just for personal reference should you want to know proven methods to remove a particular part much like the Clutch and install it again correctly.
Derbi Senda DRD Racing 50 SM Workshop Manuals offers clear detailed diagnostic guidelines on your vehicle so if something is faulty it helps you find out what the problem is and how you can fix it. You can then decide if this can be achieved on your own or if the job is too big you are able to make a booking for your Senda DRD Racing 50 SM in to a decent repair garage.
Derbi Senda DRD Racing 50 SM manual