If you want to undertake fixes on your BMW R65 then it is always a great idea to possess a Workshop Manual for a guide in the event you want to know the best way to strip off a particular component for instance the Gearbox and install it again safely.
BMW R65 Workshop Manuals can provide specific diagnostic guidelines for your automobile so if something is not working it helps you identify what the situation is and methods to resolve it. You can then analyse if this can be done yourself or if the job is simply too big you can still make a booking for your R65 into a nearby repair garage.
BMW R65 manual