Stop the disposal and remove the jam safely

A jammed garbage disposal usually means something is stuck between the impellers (the spinning parts) and the chamber wall. The first step is always the same: turn off the disposal at the switch and do not turn it back on. If you have a breaker box, flip the breaker for the disposal to the off position as well. This prevents the motor from starting while your hand is near the impellers.

Once the power is off, look into the disposal opening with a flashlight. You may see the jam right away—a bone, a piece of fruit skin, or a twist-tie wrapped around the impellers. Do not reach in with your bare hand. Instead, use tongs, needle-nose pliers, or a wooden spoon to fish out the blockage. If the jam is visible but stuck, wiggle it gently with the tool until it comes free. Never force it; forcing can break the impellers or bend the chamber.

If you cannot see the jam or reach it with a tool, the blockage may be lower in the drain line, not in the disposal itself. In that case, skip ahead to the section on clearing the drain line.

Key Takeaways

  • Always turn off the disposal switch and the breaker before putting anything into the chamber, even a tool.
  • Use tongs or pliers to remove visible jams—never your hand, and never try to force a stuck object.
  • If the jam is not visible in the chamber, the blockage is likely in the drain line below the disposal.
  • A plunger or drain snake can clear jams in the drain line without taking apart the disposal.
  • If the impellers do not spin freely after you remove the jam, the motor may be overloaded and needs to reset.

Manually rotate the impellers to break the jam

Some garbage disposals have a hex socket on the bottom of the unit. If yours does, you can use an Allen wrench (hex key) to turn the impellers by hand. This works when the jam is stuck but not completely blocking the chamber. Turn the wrench slowly back and forth—do not force it—to work the jam loose. You may feel resistance; that is normal. Keep the power off while you do this.

If your disposal does not have a hex socket on the bottom, you can still try to free the jam by turning the impellers from inside the chamber. With the power off, use a wooden spoon or a stick to push gently on one of the impellers and rock it back and forth. This can loosen debris that is wrapped around the blades. Again, do not force it. If the impellers will not budge after a few gentle attempts, stop and move to the next step.

Clear the drain line with a plunger or drain snake

If the jam is not in the disposal chamber itself, it is stuck in the drain line below. Fill the sink with a few inches of water, place a wet cloth over the overflow hole (if your sink has one), and plunge the drain vigorously for 15 to 20 seconds. The suction and pressure can dislodge debris further down the line. Repeat this three or four times, then run hot water to see if the water drains.

If plunging does not work, a drain snake (also called a plumbing auger) can reach deeper into the line. Feed the snake into the drain opening, crank the handle to spin the head, and push it forward slowly. You should feel resistance when the head hits the jam. Crank and push for 30 seconds, then pull the snake back out. The jam may come out with it, or it may break apart enough to flush away. Repeat if needed, then run hot water through the drain.

Do not use chemical drain cleaners on a garbage disposal. They can damage the rubber seals and impellers, and they are dangerous if they splash back up.

Reset the disposal motor if it is stuck

After you remove the jam and the impellers spin freely, the disposal motor may still not run. Many disposals have a built-in thermal overload switch that shuts off the motor if it gets too hot from struggling against a jam. This is a safety feature, not a break.

To reset the motor, turn off the disposal switch and the breaker. Wait 15 minutes for the motor to cool. Then turn the breaker back on, flip the switch to on, and run cold water into the disposal for a few seconds. The motor should start. If it does not, wait another 15 minutes and try again. If the motor still will not start after two or three reset attempts, the overload switch may be faulty and the disposal may need service.

Run the disposal correctly to prevent future jams

Once the jam is cleared, change how you use the disposal to keep it from jamming again. Always run cold water while the disposal is on—cold water helps solidify grease so it breaks apart instead of sticking to the walls. Let the water run for 10 to 15 seconds after you turn off the disposal to flush away the last bits of food.

Do not put fibrous foods into the disposal: corn husks, celery, onion skins, and carrot peels wrap around the impellers and jam easily. Bones, pits, and shells should go in the trash. Grease and oil should cool and be wiped into the trash or composted, not poured down the drain. If you have a lot of food scraps, scrape the plate into the trash first, then rinse it under running water before putting it in the sink.

Run the disposal once a week even if you are not using it to grind food. This keeps the impellers moving freely and prevents rust and buildup. Just turn it on with cold water running for 10 seconds.

When to call a plumber

If you have removed the visible jam, reset the motor, and the disposal still will not run, or if it runs but water backs up into the sink, the problem is beyond a straightforward jam. The impellers may be bent, the motor may be burned out, or the drain line may have a deeper blockage that a plunger or snake cannot reach. A plumber can take apart the disposal, inspect the impellers, and clear the line with a motorized snake if needed.

If the disposal leaks water from the bottom or the sides after you clear the jam, the seals may be damaged. This also requires professional service. Do not try to tighten or repair the seals yourself; they are designed to be replaced as a unit.

Frequently Asked Questions

Can I use my hand to pull out a jam if I am careful?

No. Even with the power off, the impellers have sharp edges and can cut your hand if you slip. Use tongs, pliers, or a wooden spoon instead. It takes 30 seconds longer and keeps your fingers safe.

What if the disposal makes a grinding noise but nothing comes out?

That usually means the impellers are spinning but the jam is stuck further down in the drain line. Stop the disposal, let it cool for a few minutes, then try plunging the drain or using a drain snake. Do not run the disposal repeatedly; it will overheat the motor.

Is it safe to pour boiling water down the disposal to melt a grease jam?

Boiling water can warp the rubber seals inside the disposal and may crack the chamber if it is made of certain plastics. Use hot tap water instead, which is usually 120 to 140 degrees Fahrenheit. For a grease jam, plunging or snaking is more effective than heat alone.

How long does it take for the motor to cool down after a jam?

Most thermal overload switches reset after 15 to 20 minutes of cooling. If the motor still will not start after you wait and try again, the switch itself may be faulty and the disposal may need to be replaced.

Can I take apart the disposal to clean it myself?

You can remove the splash guard and clean around the impellers with a brush and hot water, but do not disassemble the chamber or motor. Taking it apart requires special tools and knowledge of how the seals fit back together. If you need to go deeper than the splash guard, call a plumber.