Step 3 · Manually Free the Jammed Motor
The humming sound indicates the motor is receiving power but is physically stuck. To free it, look at the very bottom of the garbage disposal unit under your sink. You will find a small, hexagonal socket right in the center. Insert a garbage disposal wrench (also known as a jam-buster wrench) or a 1/4-inch Allen wrench into this socket. Apply firm pressure and work the wrench back and forth, rotating it clockwise and counter-clockwise several times. You should feel the internal flywheel break free and begin to spin freely in both directions. This action manually dislodges whatever object or compacted food waste is jamming the blades.