If you want to conduct auto repairs on your Yamaha RD 200 DX then it will always be a good plan to own a Workshop Manual to keep just for reference in the event you need to know techniques to take off a specific component like the Exhaust and fit it again correctly.
Yamaha RD 200 DX Workshop Manuals can offer you unique diagnostic details with regards to your vehicle so if something is wrong it can help you ascertain what the issue is and tips to correct it. Then you are able to evaluate if this can be achieved by yourself or in case the job is just too big you can make a reservation for your RD 200 DX in with a suitable repair garage.
Yamaha RD 200 DX manual