If you have to perform maintenance tasks on your own Aprilia ETX 350 then it will always be recommended to have a Workshop Manual to keep just for personal reference should you want to know simple methods to remove a specific component such as the Exhaust and match it again effectively.
Aprilia ETX 350 Workshop Manuals will provide you with unique diagnostic information on your car or truck so if something is broken it can help you find out what the problem is and the way to correct it. You will be able to decide if this can be done on your own or if ever the job is too big you could make a booking for your ETX 350 right into a trusted car garage.
Aprilia ETX 350 manual