If you need to perform adjustments on your own KTM 300 MXC USA then it is always recommended to have access to a Workshop Manual to keep just for a reference should you need to know proven methods to strip off a certain part for example Wheel and install it again in the correct way.
KTM 300 MXC USA Workshop Manuals offers you specified diagnostic information for the automobile so if something is playing up it can help you identify what the issue is and methods to make it better. Then you are able to evaluate if this can be done yourself or if ever the job is too big you can still make a reservation for your 300 MXC USA into a nearby friendly mechanic.
KTM 300 MXC USA manual