If you wish to do auto repairs for your Bajaj Discover DTS i then it is usually a good plan to have a Workshop Manual to use as personal reference just in case you need to know easy methods to strip off a specific component including Drive Shaft and fit it again appropriately.
Bajaj Discover DTS i Workshop Manuals gives you specified diagnostic information for the car so if something is faulty it helps you understand what the situation is and some ways to make it better. After that you can evaluate if you can do this yourself or if the job is too big you can book your Discover DTS i right into a nearby repair garage.
Bajaj Discover DTS i manual