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Garbage Disposer Motor Hums But Doesn't Run

The 3 most common part(s) or condition(s) which contribute to the symptom Garbage disposer motor hums but doesn't run are listed below. Check or test each item and watch any available videos. If you are still unable to solve the problem you may need to do additional research and troubleshooting. Remember, with our 365 Days. Period.® return policy you can return any part for any reason. So, go ahead and buy it to try it. No other parts retailer offers this unconditional return policy.


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For the symptom you selected, these are the most common parts or causes, ordered by the likelihood of fixing the symptom.

Other Causes and Conditions

Plate is Jammed

If the garbage disposer motor hums but doesn't run the shredding plate might be stuck or worn out. Use the disposer wrench (or a 1/4 inch Allen wrench) inserted into the bottom center of the disposer to wiggle the shredding plate back and forth until it moves freely. If the motor still hums after the plate is freed the disposer will need to be replaced.

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Shredding Plate

If the garbage disposer motor hums but doesn't run the shredding plate might be stuck or worn out. Use the disposer wrench (or a 1/4 inch Allen wrench) inserted into the bottom center of the disposer to wiggle the shredding plate back and forth until it moves freely. If the motor still hums after the plate is freed the disposer will need to be replaced.

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Other Causes and Conditions

Non Serviceable Motor

If the garbage disposer motor hums but doesn't run the motor might be stuck or worn out. Use the disposer wrench (or a 1/4 inch Allen wrench) inserted into the bottom center of the disposer to wiggle the motor back and forth until it moves freely. If the motor still hums after the plate is freed the disposer will need to be replaced.

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