If you want to perform auto repairs to your Hyosung GT 650 R then it is usually a good idea to own a Workshop Manual to keep just for reference in the event that you need to know techniques to take out a certain component including Wheel and match it again perfectly.
Hyosung GT 650 R Workshop Manuals provide you with certain diagnostic info for the car therefore if something is playing up it can help you figure out what the issue is and easy methods to correct it. Then you are able to evaluate if this can be achieved on your own or if the job is simply too big you can actually make a booking for your GT 650 R in to a nearby mechanic.
Hyosung GT 650 R manual