If you want to accomplish adjustments on your KTM 640 Duke II then it is always recommended to have access to a Workshop Manual to keep just for a reference if perhaps you want to know simple methods to take out a certain part much like the Door and fit it again properly.
KTM 640 Duke II Workshop Manuals can offer you identifiable diagnostic facts for the car or truck therefore if something is faulty it will help you identify what the situation is and tips to make it better. You will be able to assess if this can be done by yourself or that the job is too big you can actually make a booking for your 640 Duke II into a decent mechanic.
KTM 640 Duke II manual