If you wish to do fixes on your own Aprilia Classic 125 then it is always a great idea to possess a Workshop Manual to keep just for a guide should you need to know the way to take out a certain component like the Brake Discs and match it again efficiently.
Aprilia Classic 125 Workshop Manuals provides detailed diagnostic facts on your car so if something is wrong it can help you discover what the problem is and how to correct it. Then you are able to evaluate if you can do this by yourself or if ever the job is too big you could make a booking for your Classic 125 in with a local friendly mechanic.
Aprilia Classic 125 manual