If you have to carry out adjustments to your Rieju SMX 50 Pro then it is usually recommended to have a Workshop Manual to keep just for reference in case you need to know tips on how to remove a certain component for instance the Brake Discs and match it again accurately.
Rieju SMX 50 Pro Workshop Manuals will give you certain diagnostic information with regards to your car so if something is playing up it helps you figure out what the problem is and tips to repair it. You will be able to decide if you can do this by yourself or in case the job is just too big you can actually make a reservation for your SMX 50 Pro in to a trusted friendly mechanic.
Rieju SMX 50 Pro manual