If you wish to perform adjustments to your Rieju MX Disc 50 then it is usually recommended to have a Workshop Manual to keep just for personal reference in the event that you want to know the best ways to remove a certain component like the Drive Shaft and fit it again adequately.
Rieju MX Disc 50 Workshop Manuals offers you targeted diagnostic guides with regards to your vehicle therefore if something is not working it can help you identify what the issue is and how to repair it. You can then decide if you can do this by yourself or in case the job is just too big you can still make a reservation for your MX Disc 50 into a suitable friendly mechanic.
Rieju MX Disc 50 manual