How to Install an InSinkErator


One of the amenities of a well-supplied kitchen is a food disposal machine. Since there are differences from unit to unit, do a little research to help you obtain the one you need. Some are more powerful than others are and some may have prerequisites before they can be installed. In every case, though, it is recommended that they be installed to a dedicated source of electricity.

Things You'll Need

  • Water pump pliers Plumber's putty InSinkErator Disposer

The Steps

  • Access the drain assembly under the sink. If using a double bowl sink, install the InSinkErator Disposer under the bowl without the P-trap. Locate the drain lines coming from under that bowl and going to the P-trap.

  • Loosen the nut at the end of the line that connects it to the other sink drain. Next, loosen the nut at the top of the tailpiece and remove it from the sink.

  • Loosen the large nut holding the drain basket in place and remove it. If you don't have a wrench specially made for this nut, a large pair of water pump pliers will do.

  • Inspect the drain hole in the sink for debris and old plumber's putty. Clean it as needed for the new drain basket that comes with the InSinkErator Disposer. Roll out the plumber's putty in the shape of a small rope. Encircle the drain hole on the top side of the sink. Place the top of the new drain assembly on the putty. Secure it on the bottom side with the special nut and washers that will accept the InSinkErator Disposer motor.

  • Locate the electrical hookup on the bottom of the InSinkErator Disposer. Remove the cover to expose the electrical wires. Connect the electrical wires before securing the InSinkErator Disposer to the sink.

  • Locate the area of the InSinkErator Disposer where the drain will be installed. Install the plastic elbow to InSinkErator Disposer and then the drain line of the sink. You may need to lengthen the existing drain line to reach the InSinkErator Disposer.

Tips & Warnings

  • Locate all the nuts and pipes that will need to be removed to install the InSinkErator Disposer before you get started. If the sink has a dishwasher connected, you will need to connect the drain from the dishwasher to the InSinkErator Disposer.
  • Never work with "live" wiring. Do not leave the work area in the presence of children.

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