If you need to undertake maintenance on your own Roxon Duel SM 50R then it is usually a good idea to own a Workshop Manual to use as a reference if perhaps you need to know tips to take out a particular component like the Wheel and fit it again properly.
Roxon Duel SM 50R Workshop Manuals will provide you with detailed diagnostic guidelines for your car so if something is faulty it helps you identify what the issue is and some ways to fix it. After that you can assess if this can be done by yourself or if ever the job is just too big you are able to book your Duel SM 50R in to a local car garage.
Roxon Duel SM 50R manual