If you wish to carry out fixes for your Rieju MRX then it will always be recommended to have a Workshop Manual to use as personal reference should you need to know methods to take off a specific component for example, the Exhaust and match it again in the correct way.
Rieju MRX Workshop Manuals will provide you with particular diagnostic guidelines on your automobile so if something is wrong it helps you determine what the problem is and how you can make it better. Then you are able to decide if you can do this yourself or if ever the job is just too big you are able to book your MRX into a trusted mechanic.
Rieju MRX manual