If you have to do maintenance tasks on your own KTM 400 LC4 EGS then it is usually a good plan to own a Workshop Manual for personal reference if you want to know the best ways to strip off a certain part like the Wheel Bearing and match it again appropriately.
KTM 400 LC4 EGS Workshop Manuals provide you with specific diagnostic guides for your car therefore if something is playing up it will help you figure out what the issue is and the best way to fix it. You can then assess if this can be achieved on your own or if the job is just too big you can still make a reservation for your 400 LC4 EGS into a suitable car garage.
KTM 400 LC4 EGS manual