If you need to undertake auto repairs to your Yamaha TTR250 then it will always be recommended to own a Workshop Manual to use as a reference should you want to know the best ways to strip off a certain component such as the Brake Discs and fit it again in the right way.
Yamaha TTR250 Workshop Manuals will give you distinct diagnostic guidelines on your vehicle therefore if something is broken it can help you identify what the situation is and tips on how to resolve it. You will be able to analyse if you can do this by yourself or in case the job is too big you can make a booking for your TTR250 into a suitable car garage.
Yamaha TTR250 manual