If you have to conduct maintenance tasks on your Aprilia TXR 312 M then it is always a good plan to own a Workshop Manual to use as a reference in case that you want to know simple methods to remove a certain part for instance the Brake Discs and install it again effectively.
Aprilia TXR 312 M Workshop Manuals offer you specific diagnostic wisdom for your automobile so if something is faulty it helps you identify what the situation is and tips to correct it. After that you can evaluate if you can do this on your own or if the job is too big you can still book your TXR 312 M in with a decent friendly mechanic.
Aprilia TXR 312 M manual