Slide a Butter knife at left side by open push knob door will open. Then open all screws from top cover push cover top side front way then door locks Bracket have 3 microswitch pulls out switches mark them top medium and bottom. Remove 3 screws holding brackets will come out. On bottom see a Cam has 1/4” holes can holding Saft broken then install new door lock bracket install microswitch put 3screw and slide Cam on saft . I put a small screw on saft to hold cam on place. There was no screw . That’s why cam saft was broke. Put top cover tight all the screws and door lock fixed.
I used small wire cutter I use in fly tying hobby. The metal was easy to cut. When cover was removed I unplugged the motor,removed it and plugged the new one in. To replace the cover -- reverse it,place the 2 tabs on one edge into the slots that are already part of the base. On the opposite edge there is a domed shaped tab with a hole in center. Place the small screw that was provided back in and thighten. Your Done
