If you have to execute maintenance on your Roxon Duel SM 50 then it is usually a good plan to own a Workshop Manual for a reference if you want to know tips to remove a particular component for example the Brake Discs and match it again successfully.
Roxon Duel SM 50 Workshop Manuals are able to offer identifiable diagnostic facts for the car or truck so if something is playing up it can help you find out what the issue is and methods to correct it. You can then assess if this can be done yourself or if the job is simply too big you could make a reservation for your Duel SM 50 in to a nearby car garage.
Roxon Duel SM 50 manual