Why did my garbage disposal stop working and hum?

A humming garbage disposal usually means the motor is jammed. Learn how to safely unjam it with an Allen wrench or reset the overload protector.

Category:Electrical

Difficulty:Easy

Time:10 min

Success:50%

Updated:Jun 15, 2026

quick_referenceQuick Answer

For Why did my garbage disposal stop working and hum?, start with "Turn off power and check for jam": Unplug the disposal or turn off the breaker. Insert a 1/4-inch Allen wrench into the hex hole at the bottom center. Rock it back and forth to free the flywheel. Stop DIY if the disposal leaks water from the bottom after unjamming. This is listed as a easy recovery and usually takes about 10 min.

verifiedGuide Snapshot

Repair areaElectrical

Estimated time10 min

DifficultyEasy

Stop conditions3

Last updated Jun 15, 2026. Review the stop conditions before continuing.

account_treeRecovery State

DeviceGarbage Disposal

Current stateNo Operation

Specific stateMotor Hums

Failed stepFlywheel Jam

Likely failure typeMechanical Jam

DIY boundaryDIY recovery first

paymentsCost decision

help1. Understand the Problem

When you flip the switch and hear a hum but no grinding, the disposal motor is getting power but the impeller is stuck. This is often caused by a foreign object like a bone or utensil jamming the flywheel. The disposal has a built-in overload protector that trips to prevent motor damage.

build_circle2. Try This First

Best First Step

Turn off power and check for jam

Unplug the disposal or turn off the breaker. Insert a 1/4-inch Allen wrench into the hex hole at the bottom center. Rock it back and forth to free the flywheel.

visibility3. Visual Guidance

See what's happening and how to try the first recovery step.

Press the reset buttonAfter freeing the flywheel, locate the red reset button on the bottom or side of the unit. Press it firmly until it clicks.

Check for foreign objectsUse a flashlight and tongs (never your hand) to look inside the disposal chamber. Remove any bones, silverware, or glass shards.

Test operation with waterTurn power back on, run cold water, and flip the switch. Listen for a smooth grinding sound. If it hums again, repeat the Allen wrench step.

autorenew4. If That Doesn't Work

Try the next recovery options.

Replace the disposal unitIf the motor is burned out or the reset button won't hold, a full replacement may be faster and cheaper than professional repair.

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