How to Fix a Waste King L-8000 Reset Button

3 min read

I’ve worked on the Waste King L-8000 more times than I can count, and the reset button issue is hands-down the most common service call I get for this model. Nine times out of ten, the disposal has simply overloaded and tripped the thermal overload protector. A simple reset — and sometimes clearing a jam first — gets it running again in under five minutes.

Dave Holt — Certified Appliance Repair Technician

Experience: 15+ years servicing residential & commercial appliances  •  Certifications: EPA 608 Certified, NATE-recognized technician  •  Former lead technician at a multi-state appliance service company  •  Specialties: Washers, dryers, refrigerators, dishwashers, ovens, microwaves, ice makers

This repair guide will help you fix your garbage disposal.

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Common Symptoms & Causes

These symptoms typically point to a tripped or faulty reset button on your Waste King L-8000 garbage disposal.

🔨 Pro Tip from Dave

One thing most DIYers miss on the L-8000 is that the reset button won’t stay in if there’s still a jam in the grinding chamber — the motor thermal protector re-trips immediately. Always use a 1/4-inch hex wrench in the center bottom port to manually free the grinding plate before hitting that red reset button. Also, if the button keeps popping back out repeatedly, the thermal overload protector itself (part #3150B) is likely worn out and needs replacing, not just resetting.

  • The disposal makes no sound or response when the wall switch is flipped
  • The reset button has visibly popped out from the bottom of the unit
  • The disposal hums briefly but immediately shuts off without grinding
  • The reset button keeps tripping repeatedly after being pushed back in

These issues are commonly caused by a jammed grinding chamber, motor overheating, or a worn thermal overload protector that triggers the reset button under normal operating conditions.

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How Much Does This Repair Cost?

Replacing or resetting a Waste King L-8000 reset button yourself typically costs between $5–$15 for a replacement thermal overload button if needed. Professional appliance repair services generally charge $150–$300 for a service call covering this same fix. Choosing the DIY route can save you well over $100 on a straightforward repair.

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## Frequently Asked Questions

Frequently Asked Questions

Why does my Waste King L-8000 reset button keep popping out?

The reset button repeatedly trips when the disposal is overloaded or jammed, causing the motor to overheat. Clear any food debris from the grinding chamber before pressing the reset button again.

Where is the reset button located on the Waste King L-8000?

The reset button is a small red button found on the bottom of the disposal unit beneath your sink. Press it firmly until you feel it click into place.

What should I do if the reset button won’t stay in after pressing it?

Wait at least 10 minutes for the motor to cool down completely before attempting to reset it again. If the button still won’t hold, the disposal motor may need professional inspection or replacement.

Recommended Products

These are the parts and tools we recommend for this repair, based on compatibility and customer reviews:

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