In some cases, using a simple suction cup will open a clogged sink drain.
Step 1: Simple Solutions: First, remove the basket strainer from the drain (Fig. 1).
Run hot water until it stands about 2" deep in the sink.
Take a suction cup plunger and pump it up and down directly over the clogged drain. The water in the sink provides a seal. If the suction cup does not clear the drain in a few minutes, you will probably be forced to remove some of the pipes to get the job done.
Step 2: Clearing the Clog: If you cannot open the drain with the suction cup, set a pail underneath the sink trap and remove the cleanout plug and washer (Fig. 2). If the drain is only slightly clogged, a few quick probes with a screwdriver may solve the problem. If the screwdriver doesn't open it, use a snake or drain auger through the pipe. A drain auger works best if you rotate it, feed it in a short distance, and then rotate it again. This enables the drain auger to be inserted deeply into the pipe.
After the drain pipe is opened, replace the cleanout plug and washer. Run hot scalding water through the pipe to carry away any accumulations.
Courtesy of National Retail Hardware Association
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