If this sounds familiar, you'll be happy to know that replacing a disposer is really fairly simple. With today's plastic waste kits, leaks are seldom a problem and the electrical connections are similarly quick and easy. Finally, retail outlets sell good disposers for every household budget. Before you buy, though, it pays to check out your old unit to make sure it's not simply jammed.
Set the garbage disposal down where you can work on and see the rubber gasket. Peel off the old gasket and put the new gasket in the same place making sure that it pops into the lip and sits flat. Now you are ready to set the garbage disposer back in place. Use your knee or a helper to lift the disposal into place while looking down at it from above the sink to verify that the gasket sits flat before locking it back into place. Then look underneath the sink to make sure that all three mounting grooves are locked in. Reconnect the drains and plug the cord back in to test it for leaks.
To replace a rubber gasket, your first step will be to unplug the cord to the garbage disposal and then disconnect the drain. If you have a dishwasher installed in your kitchen, the dishwasher drain hose will need to be disconnected from the disposer. With the cord and appropriate drain lines removed, you can now grasp the sides of the mounting nut and twist it in a counter clockwise motion, which unlocks the garbage disposal. The waste disposer should then drop right down.
Your garbage disposal gasket is the top rim where the rubber seal mounts to the flange.  If your disposer is leaking from this area, the cause could be a leaky gasket.  Gasket leaks can have several causes: ageing gaskets can develop leaks; long periods of disuse can dry the gasket and cause it to leak; if your garbage disposal was removed and then replaced, the gasket may have been improperly sealed; if the gasket is not locked evenly on all three sides, it will leak.
We won’t sugar-coat it. This one is the doozy. If the leak is located at the bottom of the unit that means at least one internal seal has slipped, chipped, or flat-out deteriorated. The catch is, there are lots of these seals inside the disposal, and if one has failed it means the others are on their way. You can replace these seals with expensive, original equipment manufacturer (OEM) parts – or you can just get a new garbage disposal.

A 2-level pre-cutter joins forces with the 2 A 2-level pre-cutter joins forces with the 2 800 RPM motor-powered dual stainless-steel swivel impellers within this GE 1/2 HP Continuous-Feed Garbage Disposal to make the grinding and draining of undesirable food waste a snap. A manual reset overload protector helps safeguard the disposer from damage ensuring operational longevity. With ...  More + Product Details Close
Some folks knocked the instructions. Take heart. It appears that the Waste King guys have heard the criticisms from the negative reviewers. I am guessing that they have been re-written to better explain the installation because they are really easy to follow. My best advice is this: don't be afraid of a difficult or confounding set of installation instructions. It is really easy. Here's what you do. Go to youtube.com and search for a video on How To Remove Your Existing Garbage Disposal because this is the hardest part. You will find one that matches yours. Watch it. I started removing the Badger incorrectly, stopped, watched a video, and then it was a piece of cake. In my case, I shouldn't have removed the three long screws before removing the body of the old one. You do it after it is disconnected. READ the instruction manual carefully. Then go ahead and youtube the Waste King installation video. It is very easy once you see it done. No filing or grinding gaskets, and Good Lord, no car jacks under your sink please. If it is hard then you are doing something wrong. STOP!!! Review the procedure. Start again. The directions are actually very explicit. The parts are well labeled. The diagrams show you what to do. The videos show you what to do. If you prepare yourself (15 minutes of reading and watching videos, tops) you will fly though the installation and be a happy person.
If your garbage disposal is making a clicking or rattling sound, there may be some food particles that will not grind up inside. Remove power from disposer, reach into the sink hole with a pair of tongs and remove anything that is still down in the disposer. Test your disposer to be sure the noise is gone. If not continue troubleshooting your disposer issue (see below).
Locate the leak. Wipe off the disposal unit with a dry rag. Run water into the unit and turn it on. There are four places where the disposal unit may leak. At the top main seal, at the drain pipe, at the optional dishwasher inlet or along the garbage disposal body. Notice where the water is coming from. If the unit is wet at the very top, the main seal is leaking. If the area beneath the drain pipe is wet, the gasket is leaking. If the hose from the dishwasher feed drips, the hose or clamp may be faulty. If water is running out the bottom of the unit but the inlets and outlet are dry, the unit itself has developed a leak and must be replaced.
Roll out a generous amount of Plumber’s putty to a uniform width making a nice snake-like gasket out of putty. Wrap the putty onto the rim of the flange. Push the flange back into position and put the bottom flange on with the clip holding it into place. Tighten the three screws evenly until all three are tight. Scrape off any extra putty from the inside of the sink. Now you are ready to lock the garbage disposer back in place, reconnect the drains and test for leaks.

The majority of today’s garbage disposals are designed to dovetail with a sink’s drain outlet, which makes connecting the two components simple. There are a multitude of connection kits and adaptors available. Many models feature a power cord that is simply plugged into a nearby outlet to power the unit; however, when an outlet is not available, the unit must be hardwired, which can be significantly more expensive.
While you’re inspecting your drain lines, also look to see if you see wear and tear. Over the years, drain lines can sprout leaks and cracks that can lose water. If you notice that your lines look pretty worn, you may want to have them replaced. Again, if you are inexperienced with home improvement projects, it’s best to call a professional to tackle the job.

She knew about the service call fee. The 4 On Your Side Investigation found that’s a common fee. Consumer Investigator Jodi Brooks called around to try to get an estimate from private plumbers for a garbage disposal replacement. None of the businesses we called would give an estimate over the phone. All of them wanted to look at the situation before committing to a price, and all wanted to charge a service fee to come out. Brooks found only one plumber who would come out without charging.


Hiller Plumbing, Heating, Cooling, & Electrical provides residential and commercial service and repair throughout Tennessee, Southern Kentucky, and Northern Alabama. With our mantra, “Happy You’ll Be or the Service is Free!” we are dedicated to resolving any issue with our services.  If you have a plumbing, heating, cooling or electrical emergency, Hiller is available for 24/7, same-day service.

You should first find out whether only the disposal is broken, or if the power has gone out completely in the areas near your kitchen sink. Try resetting the circuit breaker that leads to the kitchen, or replacing a fuse if you have an older electrical box. If the garbage disposal makes no noises at all when you flip the switch, you might also want to check under the sink to see that it’s plugged in.

Garbage Disposal Install

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