Yamaha RD 125 Workshop Manuals
If you choose to perform fixes to your Yamaha RD 125 then it is always a good idea to own a Workshop Manual to use as reference in case you want to know the best way to take out a specific part including Clutch and install it again accordingly.
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Yamaha RD 125 Workshop Manuals gives you targeted diagnostic wisdom on your motorcycle therefore if something is playing up it can help you identify what the problem is and methods to fix it. After that you can evaluate if this can be done yourself or in case the job is just too big you could book your RD 125 into a local mechanic.