If you have to do repairs on your own Xmotos XB 31 then it is usually a good plan to have a Workshop Manual to use as reference if you need to know simple methods to take off a certain component such as the Brake Discs and match it again successfully.
Xmotos XB 31 Workshop Manuals will provide you with specific diagnostic wisdom on your automobile so if something is playing up it helps you understand what the issue is and tips on how to make it better. You can then decide if this can be achieved on your own or in case the job is just too big it is possible to make a booking for your XB 31 in with a local mechanic.
Xmotos XB 31 manual