If you want to do repairs on your Husqvarna SMR450 Supermoto then it is always recommended to have access to a Workshop Manual to use as personal reference in case that you need to know the best ways to strip off a particular component for example, the Drive Shaft and install it again efficiently.
Husqvarna SMR450 Supermoto Workshop Manuals gives you certain diagnostic guides with regards to your automobile therefore if something is broken it will help you work out what the issue is and how to make it better. You will be able to evaluate if this can be achieved by yourself or that the job is simply too big you can actually make a booking for your SMR450 Supermoto in with a decent mechanic.
Husqvarna SMR450 Supermoto manual