If you have to accomplish adjustments on your KTM 990 Supermoto T then it is always a good idea to have a Workshop Manual to keep just for personal reference should you want to know the right way to remove a particular part much like the Brake Discs and match it again perfectly.
KTM 990 Supermoto T Workshop Manuals provide you with specific diagnostic info with regards to your automobile so if something is broken it will help you ascertain what the issue is and some ways to fix it. After that you can determine if you can do this on your own or in case the job is simply too big it is possible to book your 990 Supermoto T in with a decent repair garage.
KTM 990 Supermoto T manual