Forget finding a new cover. Braun KM 32 parts are now almost non-existant. The best you can do is to glue it with crazy glue. To remove it, turn the head over and locate the rectangular hole in the lock plate under the drive coupling. Move it completely to one side and look deep into the hole. On the bottom you will see a screw. Remove it, then move the lock plate to the other side and repeat the process. That done, you can lift off the cover. To replace the screws, rub a bit of mastic (Putty is fine) in the screw slot. This will hold the screw on the screw driver to facilite reinsertion. Good luck!
Bawdy Bill
February 2011