If you need to perform auto repairs on your own Yamaha TDR 125 then it is always recommended to own a Workshop Manual to keep just for reference in the event you need to know easy methods to remove a specific component like the Clutch and install it again the right way.
Yamaha TDR 125 Workshop Manuals offers you exact diagnostic wisdom for your car or truck therefore if something is not working it will help you understand what the situation is and tips on how to resolve it. You can then assess if this can be done on your own or that the job is just too big you can still make a reservation for your TDR 125 into a nearby repair garage.
Yamaha TDR 125 manual