A garbage disposal that hums but won't spin is almost always jammed: the motor is getting power but the flywheel is stuck. Turn the switch off, never put your hand inside, use the hex/Allen wrench in the socket on the bottom of the unit to turn the flywheel free, then press the red reset button underneath. If it still only hums, the motor or capacitor has failed and the unit needs replacement.
Why it hums
- Something is jamming the flywheel (a bone, pit, or utensil)
- The flywheel is rusted or stuck after sitting
- The reset button has tripped
- The motor or start capacitor has failed
Safe steps, and when to call us
- Turn the disposal switch OFF. Never reach inside with your hand.
- Insert the hex wrench into the socket on the bottom and turn it back and forth to free the flywheel.
- Press the red reset button on the bottom.
- Run cold water and flip it on briefly.
If it still only hums, trips again, or leaks, call First Response. A jammed unit that won't free, or one that's leaking, usually needs repair or replacement.
Frequently asked questions
Is it safe to put my hand in the disposal?
No. Even off, never reach inside. Use the hex wrench from the bottom or pliers from above with the power off at the switch and breaker.
Where is the reset button?
On the bottom of the disposal unit under the sink, usually a small red button. Press it after clearing the jam.
When should I just replace it?
If it only hums after freeing the flywheel, or it leaks from the body, the unit has failed and replacement is usually best.