If you have to execute fixes for your CSR NKT 125 then it is usually a good idea to own a Workshop Manual to use as personal reference in the event that you want to know the way to remove a specific component much like the Wheel Bearing and match it again perfectly.
CSR NKT 125 Workshop Manuals offers you particular diagnostic info for your car or truck therefore if something is wrong it will help you figure out what the situation is and the best way to make it better. You will be able to evaluate if you can do this on your own or in the event the job is simply too big you can still book your NKT 125 in with a suitable repair garage.
CSR NKT 125 manual