Yamaha RD 125 Workshop Manuals
If you have to execute adjustments on your own Yamaha RD 125 then it will always be a good idea to have access to a Workshop Manual to use as a guide should you want to know how you can strip off a specific part such as the Brake Discs and fit it again correctly.
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Yamaha RD 125 Workshop Manuals will provide you with identifiable diagnostic guides with regards to your motorcycle so if something is playing up it will help you determine what the problem is and easy methods to make it better. Then you are able to analyse if you can do this yourself or in case the job is just too big you could book your RD 125 in to a nearby garage.