If you need to carry out fixes on your own Hyosung GT250R then it is always recommended to own a Workshop Manual to keep just for reference in case that you need to know easy methods to remove a specific part including Wheel and install it again perfectly.
Hyosung GT250R Workshop Manuals can offer you specified diagnostic information on your automobile so if something is playing up it can help you find out what the problem is and tips on how to make it better. You can then determine if you can do this on your own or in case the job is just too big you can make a reservation for your GT250R in with a trusted repair garage.
Hyosung GT250R manual