If you wish to do adjustments to your Aprilia ETX 350 E then it will always be a great idea to own a Workshop Manual for a reference in case you want to know simple methods to remove a certain component including Drive Shaft and match it again correctly.
Aprilia ETX 350 E Workshop Manuals offers clear particular diagnostic wisdom for the car therefore if something is faulty it helps you work out what the issue is and some ways to resolve it. You will be able to evaluate if this can be achieved by yourself or in case the job is just too big you are able to book your ETX 350 E in with a nearby repair garage.
Aprilia ETX 350 E manual