If you wish to conduct auto repairs for your Sym GTS 250i then it will always be a good plan to own a Workshop Manual for a guide in the event that you want to know simple methods to remove a particular part much like the Exhaust and install it again safely.
Sym GTS 250i Workshop Manuals will provide you with detailed diagnostic facts with regards to your car so if something is faulty it will help you find out what the situation is and how you can fix it. After that you can analyse if this can be done yourself or that the job is simply too big you could book your GTS 250i in with a nearby garage.
Sym GTS 250i manual