If you wish to execute maintenance on your Enfield 350 Bullet then it is usually a good plan to own a Workshop Manual to keep just for a guide in the event that you need to know how you can take off a particular part including Exhaust and fit it again safely.
Enfield 350 Bullet Workshop Manuals will give specific diagnostic information for your vehicle therefore if something is playing up it will help you figure out what the problem is and the best way to fix it. Then you are able to evaluate if you can do this by yourself or if the job is too big you can book your 350 Bullet in with a decent car garage.
Enfield 350 Bullet manual