If you need to conduct fixes on your own Aprilia ETX 635 then it is usually a good idea to own a Workshop Manual to use as personal reference in case you want to know techniques to strip off a particular component for instance the Wheel and fit it again the right way.
Aprilia ETX 635 Workshop Manuals provide you with special diagnostic wisdom on your car or truck therefore if something is wrong it helps you work out what the situation is and some ways to resolve it. Then you are able to assess if this can be done by yourself or in the event the job is just too big you are able to make a reservation for your ETX 635 into a nearby mechanic.
Aprilia ETX 635 manual