If you wish to accomplish fixes on your own GAS GAS SM 515 Supermotard then it is usually a great idea to have a Workshop Manual to use as a guide if perhaps you need to know the right way to remove a specific component much like the Brake Pads and match it again the right way.
GAS GAS SM 515 Supermotard Workshop Manuals will give you exact diagnostic info on your automobile therefore if something is faulty it helps you find out what the situation is and the best way to correct it. After that you can decide if this can be achieved on your own or in case the job is too big you can still make a booking for your SM 515 Supermotard in to a decent friendly mechanic.
GAS GAS SM 515 Supermotard manual