If you want to undertake maintenance tasks on your Husaberg FS 450 c then it is always recommended to have access to a Workshop Manual to keep just for a guide in case you need to know tips on how to strip off a specific component for instance the Brake Discs and fit it again adequately.
Husaberg FS 450 c Workshop Manuals provides specific diagnostic guidelines for the car therefore if something is faulty it can help you identify what the situation is and how to repair it. You can then assess if you can do this yourself or that the job is simply too big you can still make a reservation for your FS 450 c into a trusted repair garage.
Husaberg FS 450 c manual