If you choose to accomplish fixes to your KTM 125 EXC SIXDAYS then it is usually a good plan to have access to a Workshop Manual to use as personal reference just in case you want to know how to strip off a specific part like the Door and fit it again successfully.
KTM 125 EXC SIXDAYS Workshop Manuals can offer you exact diagnostic wisdom with regards to your automobile so if something is broken it helps you determine what the issue is and methods to make it better. After that you can evaluate if you can do this yourself or in the event the job is too big you can make a reservation for your 125 EXC SIXDAYS right into a local friendly mechanic.
KTM 125 EXC SIXDAYS manual