If you wish to carry out maintenance on your KTM 990 Supermoto T then it will always be a good plan to have access to a Workshop Manual to keep just for reference in case you want to know the way to take off a certain component such as the Door and fit it again appropriately.
KTM 990 Supermoto T Workshop Manuals gives you particular diagnostic wisdom for the car so if something is wrong it can help you identify what the situation is and easy methods to fix it. You can then assess if this can be done yourself or in case the job is too big you can still make a reservation for your 990 Supermoto T right into a local garage.
KTM 990 Supermoto T manual