If you want to accomplish fixes for your Husaberg FS650C then it will always be recommended to have access to a Workshop Manual to use as a guide if you need to know the best ways to take out a specific part like the Exhaust and match it again correctly.
Husaberg FS650C Workshop Manuals can provide certain diagnostic info for the automobile therefore if something is playing up it helps you understand what the issue is and tips on how to correct it. You will be able to evaluate if you can do this on your own or that the job is just too big you are able to make a booking for your FS650C in to a trusted garage.
Husaberg FS650C manual