If you want to execute adjustments on your KTM 400 EXC Racing then it will always be a good idea to have a Workshop Manual to keep just for a reference in the event that you need to know the best ways to take off a specific component for instance the Gearbox and match it again appropriately.
KTM 400 EXC Racing Workshop Manuals provides targeted diagnostic information for the car so if something is playing up it helps you identify what the issue is and ways to make it better. You will be able to assess if this can be achieved by yourself or in the event the job is too big you can book your 400 EXC Racing in with a decent garage.
KTM 400 EXC Racing manual