Q&A for How to Install a Garbage Disposal

You have a leak somewhere inside the seals of the disposal. Disconnect the power immediately and replace it.

Very often the circular blade inside is stuck. DO NOT REACH INSIDE TO FREE IT! Simply insert a long, sturdy, wooden handle (a broom handle will suffice) into the opening. Let it rest against the inside wall, and with force pushing down, rotate clockwise until you feel it turn freely. It may be necessary to reset the disposal. If so, locate the reset switch on the bottom of the unit. If the clog persists, use any type of drain cleaner to free it.

For now, leave the water in the sink and turn off the dishwasher if the sink looks like it's going to overflow. Usually this happens because of a clog somewhere, either in the dishwasher, sink, or disposal, so check for clogs to find the source of the issue.

Most hardware stores carry gasket kits for sink drains and disposals. Included in these are instructions for installation. It's quick and easy and cheaper than hiring a plumber.

The disposal needs power. The electrical cord connects the disposal to the outlet for electricity.

The new disposal unit has a connection for the dishwasher, but there is a seal inside that connection. It's there for kitchens without dishwashers. Remove the seal, then reattach the dishwasher drain hose.

Your water is too salty.

You need to turn off your circuit breaker for that outlet. You also shouldn't have the disposal plugged in while attaching the wires.

It should tilt down from the discharge of the disposal to the drain trap to ensure water does not stay in the disposal and cause corrosion (at least 1/4" per ft. is recommended).