If you need to do maintenance on your own Rieju RR 125 Fun Bike then it is usually a good idea to have a Workshop Manual for personal reference in the event you want to know ways to remove a particular component like the Clutch and fit it again perfectly.
Rieju RR 125 Fun Bike Workshop Manuals provides specified diagnostic wisdom for your vehicle so if something is playing up it can help you ascertain what the problem is and the best way to fix it. You can then assess if this can be done on your own or if ever the job is just too big you can actually book your RR 125 Fun Bike into a local friendly mechanic.
Rieju RR 125 Fun Bike manual