If you have to execute maintenance tasks for your Hyosung GT650R then it is usually a good idea to have a Workshop Manual to keep just for a reference in the event that you want to know proven methods to take out a certain component for example the Exhaust and fit it again in the correct manner.
Hyosung GT650R Workshop Manuals can offer you distinct diagnostic information with regards to your vehicle therefore if something is playing up it helps you understand what the problem is and methods to make it better. You will be able to assess if this can be done on your own or if the job is just too big it is possible to make a booking for your GT650R in to a local repair garage.
Hyosung GT650R manual