If you wish to accomplish fixes on your own Hyosung GT650R then it will always be recommended to possess a Workshop Manual to keep just for reference in the event that you need to know the right way to remove a certain part much like the Clutch and match it again accurately.
Hyosung GT650R Workshop Manuals gives you special diagnostic guidelines for your car or truck so if something is faulty it can help you ascertain what the problem is and tips to repair it. Then you are able to assess if this can be achieved yourself or in case the job is simply too big you could book your GT650R right into a nearby repair garage.
Hyosung GT650R manual