If you wish to execute repairs to your Suzuki DR 650 RS then it is always recommended to own a Workshop Manual to keep just for a reference in the event that you want to know techniques to remove a particular part such as the Gearbox and install it again perfectly.
Suzuki DR 650 RS Workshop Manuals provides specified diagnostic guidelines on your car therefore if something is not working it will help you identify what the problem is and how you can resolve it. Then you are able to decide if you can do this on your own or in case the job is just too big you can still book your DR 650 RS in to a nearby garage.
Suzuki DR 650 RS manual