New garbage disposals offer many new features, including quieter operation, increased grind capacity, and easier installation. When it is time to replace a garbage disposal, follow these step-by-step instructions that will help remove an old disposer and install a new garbage disposer. To begin, turn off power to the garbage disposer at the electrical box. If your disposer plugs into the wall, unplug it. Shut off the water lines to the sink. Before dismantling the old disposer and plumbing, take a photo of the old setup for reference in installing the new unit. Place a bucket or basin under the disposer and adjacent plumbing to catch any water. Identify the discharge tube that leads off of the disposer and disconnect it. Disconnect the dishwasher drain, if applicable. Identify the mounting collar that holds the top of the garbage disposer to the bottom of the sink. Loosen and remove the mounting collar with a disposer wrench, which is typically included with your unit. If the garbage disposer is hard-wired, lay the unit on its side and locate the electrical cover plate. Disconnect the wires, and then remove the unit. Inspect all parts that attach the garbage disposer to the sink. If in good condition, the replacement unit may be installed using these parts. If not, first loosen the mounting screws. Then, pry the snap ring out to release the mounting ring. Use a flathead screwdriver to pry off the backup flange and gasket. Remove the sink flange from above the sink. Clean ...
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