If you have to do maintenance tasks on your own Hyosung GT 250 EFI then it will always be a good plan to have access to a Workshop Manual to keep just for personal reference in the event you want to know the way to take out a certain part much like the Drive Shaft and match it again safely.
Hyosung GT 250 EFI Workshop Manuals offer you specific diagnostic guidelines for your car or truck therefore if something is playing up it can help you figure out what the issue is and ways to fix it. You will be able to decide if this can be achieved on your own or if ever the job is just too big it is possible to make a booking for your GT 250 EFI in with a decent car garage.
Hyosung GT 250 EFI manual