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Re-attach Disposal and Secure Mounting Ring — Mount the Garbage Disposal

Beginner

Part of project

How to Install a Garbage Disposal for the First Time · Step 5 of 7

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In this video

Place the disposal back on its support under the sink. Lift the unit and align the three tabs on its mounting collar with the sloped ramps on the upper mounting ring attached to the sink. Once aligned, slide the lower mounting ring over the tabs. Use one or two screwdrivers for leverage in the lugs to turn the ring clockwise. Continue turning until the disposal is pulled up tight against the sink flange and is securely locked in place.

Goal: Securely mount the garbage disposal back onto the sink

  • Make sure all three mounting tabs are correctly engaged on the ramps before you begin tightening the ring.

Used in this video

  • Screwdriver (brand: N/A, Tool Type: Screwdriver) — Applying leverage to tighten the mounting ring
  • Support Block (brand: N/A, Tool Type: N/A) — Holding the disposal in position during reattachment
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FAQs

What are the essential safety steps to take before and during a first-time garbage disposal installation?

Always turn off the power to the sink area at the circuit breaker first to prevent electrical shock. Wear safety glasses to protect your eyes from debris, and use a bucket and rags to manage water spills. Ensure all electrical connections are secure and properly grounded before restoring power.

Beyond the disposal unit itself, what critical tools and materials are often overlooked but necessary for a smooth installation?

Don't forget plumber's putty for sealing the sink flange, a large bucket and plenty of rags (like HDX Microfiber Rags or WYPALL Towels) for catching residual water, and a good flashlight (like the Panther Vision FLATEYE) to illuminate the workspace. While not always included, you may need a specific InSinkErator 3 ft. Power Cord Installation Kit if your unit isn't pre-wired.

How much time should a beginner set aside for this project, and which part is typically the most challenging?

A first-time garbage disposal installation typically takes 2-4 hours, assuming no major plumbing issues. The most challenging parts are often securing the mounting assembly tightly to the sink to prevent leaks, and making proper, safe electrical connections if you're wiring it yourself rather than just plugging it in.

What are the most common mistakes first-time installers make, and how can I avoid them, especially regarding leaks?

Common mistakes include not applying enough plumber's putty around the sink flange, forgetting to remove the dishwasher knockout plug (if connecting a dishwasher), or not tightening the mounting bolts evenly. To avoid leaks, ensure all connections are hand-tightened and then carefully finished with pliers, and always double-check by running water through the sink for several minutes before buttoning everything up.

Transcript
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worth it if you don't have to do this part you don't have to put anything underneath you can just put it up with your hands but this is going to help you align it way better it's going to make the task so much easier and then on the top that ring you're going to have to move it to the right so that it rides that rail it's hard to see but there's a rail right there on the upper ring and there's a tab that you can feel with your finger you have to make sure that it's riding that ring so when you start twisting that ring to the right uh don't go all the way and make sure that all three tabs are riding that ring up because if they're not you're not putting it back in evenly and you'll probably have a leak and like i was saying before it won't be as a big leak it's just going to be a little water dripping but then it's going to damage all the wood that's underneath and then you can use screwdrivers to screw that ring to the to the right makes it way better for your fingers it's just easier and please again like subscribe the video comment let me know how i can do these videos better i'll try to raffle some prices when we get enough subscribers and viewers

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