If you choose to do fixes on your Husqvarna SM 450R then it is usually a good plan to have access to a Workshop Manual to keep just for personal reference just in case you need to know tips on how to remove a particular part for example the Wheel Bearing and match it again effectively.
Husqvarna SM 450R Workshop Manuals offers you certain diagnostic wisdom with regards to your car or truck therefore if something is not working it helps you determine what the problem is and the way to make it better. You can then assess if you can do this yourself or if ever the job is too big you can make a booking for your SM 450R right into a nearby friendly mechanic.
Husqvarna SM 450R manual