How to Fix MultiGrind Technology Jam on InSinkErator Evolution Essential XTR

This guide is designed to help you troubleshoot and fix your garbage disposal effectively.

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Common Symptoms & Causes

If your InSinkErator Evolution Essential XTR is having issues, you might notice the following symptoms indicating a MultiGrind Technology jam.

• The disposal unit hums loudly but the grinding plate does not spin
• The reset button on the bottom of the unit trips repeatedly after restarting
• Hard food waste such as bones or fruit pits remains unground after a full cycle
• The unit shuts off automatically mid-cycle without completing the grind

These symptoms typically stem from debris lodged between the grinding components, a worn or seized grinding plate, or accumulated buildup that overwhelms the multi-stage grind system over time.

How Much Does This Repair Cost?

Repair route	Typical cost
Do it yourself	$0–$20 (parts)
Professional repair	$150–$300 (parts and labor)

If you’re fixing a MultiGrind Technology jam on your InSinkErator Evolution Essential XTR yourself, the cost is generally between $0–$20, usually just needing a replacement hex wrench or reset button tool. If you call a professional, expect service fees to run between $150–$300. Doing this repair yourself can save you well over $100.

Frequently Asked Questions

How do I know if my InSinkErator Evolution Essential XTR MultiGrind Technology is jammed?

Common indicators include a humming sound without any grinding, the unit stopping mid-cycle, or a lack of response when you try to activate it. You might also notice the reset button popping out at the bottom of the unit.

Can I clear the jam myself without calling a technician?

Definitely! Most MultiGrind jams can be resolved using the included Allen wrench located in the center bottom socket to manually rotate the grinding plate and free it up.

What should I do before attempting to fix the jam?

Always make sure to switch off the unit and unplug it from the power outlet before attempting any repairs. Never insert your hand into the drain opening under any circumstances.

Recommended Products

Here are some tools and parts I recommend for this repair, based on their compatibility and customer reviews:

• InSinkErator WRN-00 Jam-Buster Wrench, Silver
• MAX DISPOSER Jam-Buster Wrench with Sticky Wall Mount, Garbage Disposal Wrench Compatible with SinkErator and Waste King/Moen Universal Fit for Major Brands Garbage Disposals to Install
• InSinkErator in-Sink-Erator Standard Mounting Gasket, Black Color
• Garbage Disposal Parts for Insinkerator, 75499 Flex Coupler Replacement Parts Compatible with Insinkerator Anti-Vibration Tailpipe Replaces Part Number 74085

The Hex Wrench That Clears 80% of InSinkErator XTR Jams Without Calling a Technician

Before you assume your MultiGrind Technology is broken, grab the OEM jam-buster wrench. This is the first tool to reach for on every XTR jam call. It can make the difference between a quick 10-minute DIY fix and a costly $150 service visit.

What works

• The wrench fits the hex socket on the bottom of the XTR’s grinding chamber perfectly—no wobble or stripping, even after years of use across different units.
• It provides enough leverage to free stuck debris and fibrous material without the need for a hammer or pipe wrench, which could damage the chamber walls.
• The original InSinkErator design ensures it works reliably with the reset button procedure—loosen, manually rotate the impeller back and forth, then tighten and reset.

What doesn’t

• The wrench itself won’t help if your jam is due to a damaged impeller or a crack in the grinding ring—you’ll need a replacement disposal in those cases.
• If you misplace it, finding the OEM version can be trickier than universal wrenches, though it’s always better to have the right tool than to risk forcing a substitute into the socket.

I’ve had a homeowner call me back after ordering a universal jam wrench online. It was slightly too loose in the XTR’s hex socket, and he stripped the corners before reaching out. Stick with the InSinkErator WRN-00 Jam-Buster Wrench for this model, or keep one handy in your toolbox before you ever need it.