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Customer Questions and Answers for Start Switch Knob by Whirlpool

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Manufacturer Part
4.89 (64)
By: Whirlpool
Part Number: OEM18043023
Manufacturer Part Number: WP9871800

The Start Switch Knob is an OEM part for Whirlpool trash compactors. This knob allows you to control the start function of the trash compactor, initiating the compacting cycle when turned.

Causes of a bad Start Switch Knob can include wear and tear from frequent use, damage due to excessive force, or issues with the internal connection between the knob and the switch mechanism.

Symptoms of a bad Start Switch Knob include:

  • Difficulty turning the knob or engaging the start function
  • The compactor not starting or stopping intermittently
  • The knob feeling loose or coming off completely

This OEM part is also compatible with Maytag, KitchenAid, Jenn-Air, Amana, Magic Chef, Admiral, Norge, Roper, and Kenmore models.

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Questions & Answers

For Whirlpool Start Switch Knob (Part Number: OEM18043023)

1 Answer

Hello Michael. No, just align it with the flat slots and turn the knob to turn the unit on. The switch may be bad in your unit.

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1 Answer

Roger, the rotary start switch is part number 675382. Knobs are included in the kit. For the knob only use part number WP9871800. Unfortunately, the white knob is no longer available. Thanks.

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J. J. for Model Number KitchenAid Model # KC0100508-1

I have a Kitchen Aid Toaster Oven (KC0100508-1) & the timer knob that mounts on a shaft with a flat side failed. It is an older model oven, but aside from the broken (unusable) knob, the unit works fine. When I called KA Customer Service, they said the model was "old" & they currently had no parts available for my model. I don't care what kind of knob is needed, as long as I can find one that fits the shaft I don't care what it's actual purpose is, AS LONG AS IT FITS! It would be a shame to throw out the unit simply because of a broken knob and using pliers on the shaft to turn it is detrimental. Do you have ANY kind of knob that would fit & bebe useable??? Thanks.

1 Answer

Hello J.J. Sorry, we can only offer part numbers that the manufacturer recommends. You can try a universal kit TJKN002 if you would like to try one. But we can not verify it will fit.

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1 Answer

Melinda, This knob appears to be the start/run knob for a trash compactor. It won't have installation instructions. When the knob is in the "OFF" position, you should be able to grasp the knob and pull it up and out of the control panel, and off the switch.

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