How to Replace a Garbage Disposal - Easy, Step-by-Step

Introduction

This tutorial will guide you through the process of replacing your old garbage disposal, whether it’s an InSinkErator or another brand. We'll walk through each step, from diagnosing the issue to installing the new unit, ensuring you have the knowledge to complete the job safely and effectively.

Chapter 1: Do You Need to Replace It

Before you start, confirm that your garbage disposal needs replacing. Look for these signs:

• Water leaking from the bottom or visible cracks may indicate rust or failure.
• If the leak is from a connection joint, tightening may resolve the issue instead of a full replacement.

Chapter 2: Disconnecting Power and Drains

1. Disconnect Power

   • Unplug the disposal if it has a plug.
   • If hardwired, turn off the circuit breaker at the panel.

2. Remove Drain Connections

   • Identify the two drains on the side of your disposal:
     • One for the dishwasher.
     • One for the main sink drain.
   • Use a screwdriver to loosen and remove the drains, allowing some slack but not fully detaching them yet.

Chapter 3: Removing the Old Disposal

1. Prepare for Removal

   • Place a container or Tupperware under the disposal to catch any remaining water.
   • Identify the mounting system, typically consisting of a flange connected to the sink.

2. Loosen the Mounting Ring

   • Use a screwdriver to loosen the ring that secures the disposal to the sink.
   • Be prepared for the disposal to drop slightly once released.

3. Remove the Disposal

   • Carefully detach the disposal from the sink and pull it out, making sure to manage its weight.

Chapter 4: Prepping for the New Disposal

1. Select Your New Disposal

   • For example, a Waste King one horsepower disposal is a solid choice.

2. Unbox and Check Components

   • Ensure your new disposal includes a power cord, plumbing fittings, and hardware.

3. Remove Old Plumber’s Putty

   • Clean the area where the new disposal will attach to ensure a proper seal.

Chapter 5: New Sink Drain Install

1. Choose Your Sealant

   • For a curved lip, use plumber's putty instead of a rubber gasket.
   • Roll the putty into a snake and form a circle to fit around the drain.

2. Remove the Dishwasher Plug

   • Use a blunt tool to pop out the white plug inside the disposal, allowing for dishwasher connection.

3. Install the New Flange and Gasket

   • Place the paper gasket, then thread on the mounting nut to tighten against the putty seal.

Chapter 6: Installing New Drain Pipe on Disposal

1. Prepare the Drain

   • Attach the rubber gasket and metal bracket to the new drain before mounting the disposal.

2. Secure the Drain

   • Use screws to attach the drain components while the disposal is still unmounted.

Chapter 7: Disposal Installation

1. Mount the Disposal

   • Align the new disposal with the sink flange and twist to secure it.
   • Ensure it’s tight and make adjustments as necessary.

2. Reconnect Drains

   • Attach both the main drain and dishwasher drain securely.

3. Test the Installation

   • Turn the power back on and run water through the disposal to check for leaks.

Conclusion

Congratulations on successfully replacing your garbage disposal! Key points to remember include ensuring proper sealing with plumber’s putty, correctly aligning components, and testing for leaks after installation. If you encounter questions or need guidance on kitchen upgrades, feel free to explore additional resources or ask for help. Happy DIY-ing!