Garbage Disposal Knockout Plug

Using the hammer lightly tap the back of the screwdriver against the knockout plug repeatedly.

Garbage disposal knockout plug.

Insert a screwdriver into the drain opening far enough to contact the plug then tap the screwdriver firmly with a hammer to knock out the plug. Move the screwdriver around the perimeter of the plug tapping all the while with the hammer so you can cleanly remove the whole knockout plug. As later in the same guide it provides these pearls of wisdom. Your disposer is ruggedly built to give you many years of trouble free service.

The name is derived from the fact that if the orifice needs to be used the plug can literally be knocked out. When knockout plug falls into disposer you may remove it or simply grind it up when the disposer is used. Lay the garbage disposal on its side with the dishwasher drain opening facing you. Before long the plug will fall back into the disposal unit.

The plug is similar to the knockout plug on a metal electrical box and you remove it the same way.