Best Garbage Disposal Wrenches and Maintenance Tools

Garbage disposals jam occasionally when large or hard food scraps bind the grinding plate against the grinding ring. A jammed disposal makes a humming sound but the plate does not turn. The fix is almost always simple: manually rotate the grinding plate to free the obstruction using the hex wrench socket on the bottom of the disposal motor. Understanding this repair saves a service call every time it happens.

What Causes Garbage Disposal Jams

• Hard items that should not be in a disposal: fruit pits, bones, gravel, silverware
• Fibrous materials that wrap around the plate: artichoke leaves, celery, asparagus
• Large pieces that the plate cannot grind before the overload trips
• Disposal that has not been used for a long time – the plate can stick to the grinding ring

The Fix: Manual Rotation

Almost all garbage disposals have a 1/4-inch hex socket on the bottom center of the motor housing. Insert the correct hex wrench and turn it back and forth to manually free the jammed grinding plate. Once the plate moves freely, press the reset button on the bottom of the disposal (the small red or black button that trips when the motor overloads), restore power, and run water while turning on the disposal. This fixes approximately 90% of garbage disposal jams in under 2 minutes.

Our Top Picks

1. InSinkErator WRENCH-QK 1/4-inch Hex Wrench

The brand-made wrench for InSinkErator disposals (the market leader). The specific wrench included or recommended with InSinkErator disposals. Fits the 1/4-inch hex socket on the bottom of InSinkErator Badger, Evolution, and other models. A dedicated tool that belongs permanently under the sink next to the disposal. Costs less than $5 and saves a service call every time the disposal jams.

2. Standard 1/4-inch Allen Wrench (Hex Key)

A standard 1/4-inch L-hex key (Allen wrench) from any hardware store. Fits the same socket as the InSinkErator wrench. Most disposals – InSinkErator, Waste King, Moen, and others – use a 1/4-inch hex socket. If you have lost or never received the wrench that came with your disposal, a standard hex key from your existing set almost certainly fits.

3. Waste King 1016 Garbage Disposal Wrench

The official wrench for Waste King disposals. Waste King uses the same 1/4-inch hex socket as InSinkErator so any 1/4-inch hex key works, but the branded wrench has a shape optimized for reaching the bottom of the motor housing in tight under-sink spaces.

4. Moen Disposal Wrench Kit

Includes a hex wrench plus a grinding plate turning tool for manual rotation from the top (through the drain opening) as well as from the bottom. The dual-approach kit is useful when the bottom socket is inaccessible due to tight cabinet installation.

5. GE Appliances WC08X10004 Jam Buster Wrench

A long-handle hex wrench with an offset that provides more torque for severely jammed disposals. The extra leverage helps when a jam is particularly stubborn and a standard hex key does not provide enough torque for manual rotation.

How to Clear a Jammed Garbage Disposal

1. Turn off the disposal switch and unplug the disposal from under the sink (or turn off the circuit breaker).
2. Use a flashlight to look into the disposal from above – remove any visible objects with tongs or pliers (never use your hand).
3. Insert the 1/4-inch hex wrench into the socket on the bottom center of the disposal motor.
4. Turn the wrench back and forth until the grinding plate rotates freely.
5. Press the red reset button on the bottom of the disposal.
6. Restore power and run cold water while turning on the disposal.

FAQ

Why does my disposal hum but not run?

The motor is receiving power but the grinding plate is jammed and cannot rotate. The thermal overload protection trips after a few seconds to protect the motor. Follow the manual rotation procedure above. If the plate rotates freely with the wrench but the disposal still does not run after resetting, the motor start capacitor or the switch may be faulty.