If you want to undertake maintenance for your Husaberg FE550E then it is always a good plan to have access to a Workshop Manual to keep just for personal reference should you want to know proven methods to take off a certain part including Drive Shaft and fit it again successfully.
Husaberg FE550E Workshop Manuals will give you specific diagnostic guides on your car so if something is wrong it can help you work out what the problem is and the way to correct it. After that you can determine if this can be achieved yourself or that the job is simply too big you can still make a reservation for your FE550E into a nearby mechanic.
Husaberg FE550E manual