Step 1: Remove the Screws

Remove the two screws that fasten the trip lever to the tub. The trip lever is the lever that makes the tub drain go up and down.

Step 2: Remove the Trip, and Look for Debris

Once the screws are removed, yank up on the trip lever and the whole mechanism will come out.

Look for hair or debris that can be removed. Now that the trip lever has been removed, a hand snake can be used.

Step 3: Block the Hole, and Begin Plunging

Before plunging, use a wet rag to block the hole in the overflow plate where the trip lever is (Image 1).

Next, put a few inches of water into the tub, then hold the rag in place and start plunging (Image 2).

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    Image 1

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    Image 2