If you wish to perform auto repairs on your Hyosung GT 250 EFI then it will always be recommended to possess a Workshop Manual to keep just for reference in the event you need to know ways to strip off a certain part for example the Brake Discs and match it again in the correct manner.
Hyosung GT 250 EFI Workshop Manuals will provide you with detailed diagnostic facts on your car or truck therefore if something is broken it helps you ascertain what the problem is and tips to fix it. You will be able to determine if this can be done by yourself or in the event the job is too big you could book your GT 250 EFI into a trusted car garage.
Hyosung GT 250 EFI manual