If you wish to execute fixes on your own Kawasaki KLR250S then it is always a good plan to own a Workshop Manual to keep just for a reference if you want to know how to take out a particular part including Drive Shaft and match it again appropriately.
Kawasaki KLR250S Workshop Manuals offers you exact diagnostic guides for your vehicle so if something is wrong it will help you determine what the situation is and the way to repair it. After that you can analyse if this can be achieved by yourself or if the job is just too big you can book your KLR250S in with a trusted repair garage.
Kawasaki KLR250S manual