If you have to accomplish adjustments on your own Yamaha TT R230 then it is always a good plan to possess a Workshop Manual for personal reference in the event you want to know proven methods to take out a certain component much like the Brake Pads and fit it again efficiently.
Yamaha TT R230 Workshop Manuals will provide you with certain diagnostic details with regards to your vehicle therefore if something is not working it helps you discover what the issue is and methods to correct it. You can then evaluate if this can be done on your own or if the job is too big you are able to make a reservation for your TT R230 in to a decent mechanic.
Yamaha TT R230 manual