Step 3 · Detach the Garbage Disposal Unit
The garbage disposal unit is heavy and will drop once released. Support its weight from below with one hand, or place a few blocks of wood or a small stool underneath it for support. Locate the mounting ring at the top of the disposal where it connects to the sink flange. You will see several small lugs on this ring. Insert the tip of a large flathead screwdriver or the special 'Jam-Buster' wrench (if you have it) into one of these lugs. Apply firm pressure and turn the entire mounting ring counter-clockwise about one-quarter turn. You will feel it unlock from the mounting assembly. Once unlocked, carefully lower the heavy disposal unit and move it out from under the sink.