How to change the gear on the No 2 model Edlund Manual Can Opener?

To change the gear on the No. 2 Edlund Manual Can Opener, first, ensure the opener is disconnected from any power source and is clean. Remove the screws securing the gear cover, then take off the cover and carefully detach the old gear. Align the new gear with the mounting points and reassemble the cover, securing it with screws. Finally, test the opener to ensure the gear is functioning properly.