If you want to perform auto repairs to your Aprilia MX 50 Supermoto then it will always be recommended to have access to a Workshop Manual to keep just for a guide just in case you need to know the best ways to take out a particular part much like the Drive Shaft and match it again correctly.
Aprilia MX 50 Supermoto Workshop Manuals will give specific diagnostic info for the vehicle therefore if something is faulty it helps you find out what the situation is and how to repair it. You can then decide if this can be achieved yourself or if ever the job is simply too big you can still make a booking for your MX 50 Supermoto into a local garage.
Aprilia MX 50 Supermoto manual