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InSinkErator Garbage Disposals Not Turning On: How to Fix It Yourself

When an InSinkErator garbage disposal won't turn on, it has almost always tripped its internal overload protector. This happens when the motor overheats — usually because something jammed the blades. The fix takes about 2 minutes and costs nothing.

⚡ Difficulty: Easy⏱ 5-15 minutes💰 Parts cost: $0🔧 Tools: Allen wrench (1/4 inch, usually included with unit), Flashlight

⚠️ Safety First

  • NEVER put your hand inside a garbage disposal, even if it appears to be off.
  • Turn off the wall switch and unplug the unit (or flip the breaker) before doing anything.

Parts You May Need

InSinkErator Jam-Buster Wrench (if missing)

~$3–$6

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Step-by-Step Repair

  1. 1

    Turn off the wall switch

    Make sure the disposal switch is in the OFF position. Do not skip this step.

  2. 2

    Press the reset button

    Look at the bottom of the disposal unit under the sink. You'll see a small red or black button. Press it in firmly. This is the overload reset. If it clicks, that was your problem.

  3. 3

    Clear the jam with the Allen wrench

    Insert a 1/4-inch Allen wrench into the hex hole on the bottom center of the disposal. Crank it back and forth to free the grinding plate. You'll feel resistance at first, then it should spin freely.

  4. 4

    Remove the obstruction

    Use a flashlight to look inside from the top. With the power OFF, use tongs or pliers (never your fingers) to pull out whatever jammed it — a bone, fruit pit, utensil, etc.

  5. 5

    Test it

    Turn on the cold water, flip the switch, and run the disposal. If it hums but doesn't spin, it's still jammed — repeat step 3. If it does nothing at all, check the breaker in your electrical panel.

If That Didn't Work

  • The wall switch itself may be faulty — test by plugging a lamp into the disposal outlet.
  • The circuit breaker for the disposal may have tripped. Check your electrical panel.
  • If the motor hums but won't spin even after clearing the jam, the motor bearings may be seized.

When to Call a Professional

If the motor is completely dead after resetting and checking the breaker, the disposal likely needs replacement. A new InSinkErator costs $80-200 and a plumber charges $100-200 to install it. Many handy homeowners can do the swap themselves.

Related Repairs

InSinkErator — Humming But Not Spinning

Easy · 10-20 minutes · $0–$6

GE — Leaking from Bottom

Medium · 20-40 minutes · $0–$15

Disclaimer: This guide is for informational and educational purposes only and does not constitute professional repair advice. All repairs are performed at your own risk. RepairItFree.com is not liable for any personal injury, property damage, device damage, voided warranties, or other losses resulting from the use of this information.

If you are unsure about any step — especially anything involving electricity, gas, water, or refrigerant — stop and consult a qualified professional. Your safety is more important than saving money.

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