If you choose to conduct repairs for your Rieju Tango 50 SM then it will always be recommended to own a Workshop Manual to use as personal reference in the event that you need to know the best way to remove a specific component like the Wheel and fit it again perfectly.
Rieju Tango 50 SM Workshop Manuals will give you distinct diagnostic information for the vehicle so if something is wrong it helps you discover what the situation is and how to repair it. You will be able to evaluate if this can be done on your own or in case the job is just too big you can actually make a reservation for your Tango 50 SM right into a suitable repair garage.
Rieju Tango 50 SM manual