How to Replace an InSinkErator Garbage Disposal? Step by Step Guide

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Garbage disposal replacement and installation is one of the easiest projects, especially for DIYers who have basic experience with using standard plumbing tools.

Before calling a plumber to install a new one, consider replacing it. You don’t need to know any rocket science; if you keep some things in mind, you can install your sink garbage disposal without your plumber’s help.

In this guide, we have tried to discuss entirely how to replace an InSinkErator garbage disposal topic. Also, share some tips and tricks, which will be very useful for you during replacing. So grab the few basic plumbing tools and follow these few easy processes.

3 Things to Know About Replacing a Garbage Disposal

Before jumping to the main part, there are some basic things, so shortly know about them first. Then follow the main part. Before you head down under the kitchen sink, let’s see what you need to learn.

1. Save Money by Replacing it Yourself

When you buy the new best garbage disposal, you will get it almost within your budget. Mostly you will find $50 to $200 garbage disposal in the market, where their performance, blade durability, auto reverse start, warranty, and other things are quite different depending on the price. So, according to the demand of the kitchen, you can buy garbage disposal within your budget.

Basically, in the case of garbage disposal replacement, mostly the owners hire a plumber, where on an hourly basis, the plumber charges an average of $90 in many cases, which is mostly a huge cost for anyone. But if you can get the basic knowledge, then you can save this installation cost by installing it yourself.

2. You Need Basic Tools

For new garbage disposal unit installation and replacing, you will need some basic tools; we have mentioned some below. In addition, many different models may require different tools, so you must read your disposal’s user manual.

  • Hammer
  • Putty knife
  • Flashlight
  • Plumber Putty
  • Needle nose pliers
  • Flat-headed screwdriver
  • Phillips head screwdriver

3. Understand the Every Process of Garbage Disposal Replacing

Before installing and replacing, it is necessary to have a viable idea about all aspects. Below we have shared the InSinkErator garbage disposal installation and replacement process step by step in detail. By adopting this process, you can install it easily.

Written Direction:

Before installing your purchased InSinkErator garbage disposal, be sure to read the installation instructions guide that comes with it. In many cases, it may be necessary to use additional tools separately depending on the model and follow different methods.

How to Replace an InSinkErator Garbage Disposal (Step by Step)

How to Replace an InSinkErator Garbage Disposal

Step 1: Shut OFF the Electricity Before Getting Started

Ensure power shut off before installing, replacing, or repairing any electronic items. Similarly, the garbage disposal unit must be unplugged before replacing. Mostly, you will get the plug underneath the kitchen.

To increase safety, you can also turn off the main circuit breaker of your home, which helps you to work more confidently.

Step 2: Carefully Remove Every Bolts and Old Unit

Next, you must remove the old garbage disposal unit, but first, you must safely remove the fittings and bolts. Then loosen the hose clamp and pull it from the main fittings at a loose end. At the same time, loosen the bolts that bind the drain flange to the disposer. 

After removing all the bolts and fittings, the disposer will be removed. Though you can see several ways here, the most common is mount ring assembly. You need to support the disposer from below and rotate it. At the top position, keep turning the 3 tabs mounting ring in a counterclockwise direction until it falls away. After removing the disposer in this way, remove the remaining bolts and rings.

Step 3: Apply Putty and Finish the Drain

Now remove the remaining old putty and caulk stuck to the sink hole and clean it. Next, to make the new drain assembly roll the plumber’s putty on the counter until it is 1/2 inch thick. Then stick the putty roll on the underside of the drain and firmly press it into the sink hole, so it sticks well.

Step 4: Snap the Ring

After applying putty, snap the retaining ring and mounting flange to the drain spud and tighten the bolts properly with the help of a slotted screwdriver. While tightening, you may see some putty squeeze out; gently remove the residue.

Step 5: Wire and Finish It Up

Now you have to connect the circuit wire with the disposer. Connect the black lead with the black circuit wire and the white tip with another white circuit wire, then replace the cover. Also, see the InSinkErator garbage disposal’s user manual wiring part and finish the wiring safely.

Step 6: Install the New Garbage Disposal Unit

Finally, lift the disposer unit to the sink drain and grip the tab with the mounting ring. Then slip the screwdriver into a tab slot and rotate it clockwise until it bottoms out.

Then fit the rubber washer at the flanged end to plumb the disposer drain outlet. Afterward, tip the metal flange bottom, and slide the metal flange from the other side. Next, tip the bottom of the metal flange of your disposer and tighten the bolt on the top of the flange in the proper way.

Cut the crosspiece to a proper length, attach it to the drain tee, and install the P trap.

How to Replace a Garbage Disposal Video Tutorial

Also Read: What is the Difference Between 1/2 and 3/4 Garbage Disposal: What HP Do I Need?

Final Verdict

Successfully complete the replacing process by following our guide and InSinkErator disposal user manual. You should now test the disposal to see if there is any leakage in its dishwasher, sink flange, tail-pipe, and mounting assembly connections. Hopefully, if you properly follow how to replace an InSinkErator garbage disposal guide, you will not face any of these issues.


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