If you want to do maintenance on your Rieju RS 1 Evolution Racing then it is usually a great idea to have a Workshop Manual to keep just for personal reference in the event you want to know the best way to strip off a certain component including Gearbox and match it again accordingly.
Rieju RS 1 Evolution Racing Workshop Manuals offer you specified diagnostic facts on your automobile so if something is not working it will help you understand what the problem is and how you can resolve it. After that you can analyse if you can do this on your own or in the event the job is too big you can actually make a reservation for your RS 1 Evolution Racing in with a local garage.
Rieju RS 1 Evolution Racing manual