Turn off the electricity for the garbage disposal, either by unplugging the unit or turning off the power to the circuit that holds the disposal.
Disconnect the garbage disposal from the electric circuit. This step is only required if the disposal is hardwired into the electric circuit. Open the electrical service panel and unscrew the terminals holding the wires for the disposal. Pull the wires out.
Disconnect the washer drain line. Unscrew the hose clamp with a screwdriver and slide it down the hose and off the disposal nipple. Pull the hose off the disposal.
Loosen the locking ring located at the top of the disposal with a wrench.
Rotate the disposal until it can be pulled down and away from the mounting bracket.