Step 3 · Inspect for a Seized Garbage Disposal Motor

If you hear a humming sound, the motor might be overloaded or seized. Turn off the power again at the breaker. Use the Allen wrench to attempt manually rotating the impeller. If it turns freely, the problem might be electrical. If it's seized, the motor needs professional repair. Contact a qualified plumber.

Tools and Materials

ACDelco Angle Torque Wrench ACDARM315-3A