How to Unclog a Jammed Garbage Disposal (Step-by-Step Guide)

A jammed garbage disposal is one of the most common kitchen issues that homeowners experience. When this occurs, you may notice a humming noise, water backing up in the sink, or that your garbage disposal Allen wrench won’t turn.

The good news is that in most cases, you can easily resolve this issue by yourself. In most instances, you won’t need to replace the garbage disposal.

This guide will walk you through how to safely unjam your garbage disposal, how to properly use an Allen wrench, what to do if it won’t turn, and when to stop and call a professional.

Signs Your Garbage Disposal Is Jammed

A jammed disposal will hum but won’t turn. Sometimes, the motor will turn on and then turn off. Other times, the reset button will keep popping out. You may also notice that your sink is draining slowly.

Another sure sign of a jammed disposal is when you put an Allen wrench into the bottom socket and it won’t turn.

If your disposal isn’t making any noise at all, the problem is likely electrical. However, if your disposal hums or won’t turn by hand, the problem is most likely a jam in the grinding chamber.

Sometimes you may also notice that your sink is draining slowly. If your sink is clogged even when the disposal is not running, the issue may not be inside the disposal at all. In that case, you may need to fix a jammed kitchen sink instead of unjamming the disposal.

Common Causes of a Jammed Garbage Disposal

Most garbage disposal jams occur due to predictable reasons:

• Hard objects like bones, fruit pits, bottle caps, or even small utensils can get lodged between the impellers and the grind ring. Fibrous foods like celery, onion skins, corn husks, or banana peels can get wrapped around the internal parts and prevent them from turning.
• Grease is another contributing factor. It goes down as a liquid but solidifies in the chamber and prevents turning. Too much food at once can also jam the motor.
• In older models, rust or wear may cause friction, making it difficult to turn the shaft.
• In most instances, something is physically in the way of the grinding plate.

Safety First Before Unjamming The garbage disposal

Turn off the power to the disposal before attempting to unjam it. Unplug it from the outlet under the sink. If it is hardwired, switch off the breaker from your electrical panel.

Never insert your hand into the disposal, even if you think it is turned off. Use pliers or tongs to retrieve objects.

Step 1: Look for Visible Debris

Use a flashlight to illuminate the sink opening and examine the grinding chamber. Examine for foreign materials such as metal fragments, bone fragments, glass, or dense food masses. If you find something, carefully extract it with needle-nose pliers.

Some models have a rubber splash guard that you can remove for easier access. If your disposal has one, carefully pull it out and examine further. Once you have removed visible debris, turn the power back on and try it again. If it hums but doesn’t turn, proceed to the next step.

Step 2: How to Unjam a Garbage Disposal with an Allen Wrench

Most garbage disposals have a hex-shaped socket located at the bottom center of the disposal. This is where the Allen wrench is placed. Now insert a 1/4-inch Allen wrench into the socket. Turn it slowly from side to side in both directions. Use steady pressure, not a jerky force.

You should feel resistance at first. This is a sign that the impellers are pushing against the blockage. Continue to rock the wrench back and forth gently. Once the wrench turns smoothly through a complete 360-degree circle, the clog is probably cleared.

What If the Garbage Disposal Allen Wrench Won’t Turn?

If your garbage disposal Allen wrench won’t turn at all, don’t try to force it hard.

A hard object might be stuck very tightly inside. Grease may be hardened around the grinding plate. The motor shaft might also be under pressure. Rather than trying to turn it by force to complete a rotation, make small back-and-forth turns. Rocking the wrench is better than forcing it.

If it still won’t turn, try turning the grinding plate from above. Put a wooden broom handle into the disposal through the sink hole. Place it against one of the impellers and push against it with steady pressure to turn the plate manually by hand.

Only use wood. Never use metal objects inside the disposal chamber. If the plate turns loose from above, try the Allen wrench again from below. If the wrench still won’t turn in either direction, there might be internal mechanical damage, and it could need to be repaired or replaced.

How to Unjam a Garbage Disposal Without a Wrench

If you don’t have an Allen wrench, you can still try to solve the jam. Turn off the power supply first. As we discussed above, insert a strong wooden spoon or a broom handle into the chamber. Press against one of the impellers and use strong but controlled pressure to turn the grinding plate.

Don’t use metal objects, as they can damage the grind ring. When the plate turns freely, turn the power supply back on and check the disposal. This is an effective technique for softer food clogs.

Step 3: Reset the Garbage Disposal

Unjamming and resetting are similar processes, but not exactly the same. After unjamming, find the reset button located at the bottom of the disposal. This button is usually small and red. If it has come out, push it firmly until it clicks back into place.

The reset button is a kind of overload protector. If the motor was overheated during the jam, you need to reset it before the disposal will work again. If the disposal still doesn’t work after resetting, the problem can be electrical, not mechanical.

After unjamming and pushing the reset button, turn the power supply back on. Turn on the cold water tap in the sink and turn on the disposal. It should start spinning immediately without humming or hesitation. Let it spin for about thirty seconds. Listen carefully and check for leaks under the disposal.

If it works properly and drains well, you have successfully solved the jam.

What to Do If You Can’t Unjam the Garbage Disposal

If you have done all the above steps and the disposal is still not in motion, then you should stop pushing it.

A burning odor, excessive metal grinding noise, water dripping from the bottom of the housing, a wrench that does not turn at all, or a reset button that keeps tripping repeatedly could be a sign of a faulty motor or damage. At this stage, repair or replacement by a professional is the best course of action.

How to Prevent Garbage Disposal Jams

Preventing jams is much simpler than repairing them. Always turn on cold water before, during, and after using the disposal. Avoid fibrous and stringy foods. Never pour grease or oil down the drain. Add food gradually, rather than all at once. Avoid hard objects altogether.

Running a few ice cubes now and then can help remove residue from the impellers and keep the disposal running smoothly. A well-maintained garbage disposal will last for years without any problems.

Final Thoughts

Knowing how to unclog a jammed garbage disposal can save you time and money. Most clogs are due to simple blockages that can be removed with careful observation and manual turning.

If your garbage disposal Allen wrench does not turn, do not panic and take a systematic approach. Avoid forcing the system. Instead, concentrate on safely removing obstructions.