If you wish to accomplish repairs on your KTM 300 EXC then it is always a good plan to have a Workshop Manual for a reference in the event that you need to know the way to take off a particular part for instance the Brake Discs and install it again accordingly.
KTM 300 EXC Workshop Manuals offers you precise diagnostic guides on your car therefore if something is playing up it can help you identify what the problem is and how you can fix it. You will be able to evaluate if you can do this yourself or if ever the job is too big you are able to make a reservation for your 300 EXC in with a decent repair garage.
KTM 300 EXC manual