If you want to accomplish fixes to your Hyosung GT 250 EFI then it will always be a good idea to possess a Workshop Manual to keep just for personal reference should you need to know tips to remove a certain part like the Exhaust and install it again efficiently.
Hyosung GT 250 EFI Workshop Manuals can offer you detailed diagnostic information with regards to your car or truck therefore if something is playing up it can help you figure out what the problem is and tips to fix it. Then you are able to assess if this can be done on your own or in the event the job is just too big you can book your GT 250 EFI right into a suitable mechanic.
Hyosung GT 250 EFI manual