Step 2 · Remove the Tub Stopper
For a twist-and-turn stopper, first, open the stopper to the up position. Unscrew the small knob on the very top by turning it counter-clockwise. Once the knob is off, you may see a brass post with a slot for a flathead screwdriver or a small set screw on the side. If there's a set screw, use the appropriate screwdriver to loosen it. If it has a slot on top, hold the main body of the stopper and unscrew the center post counter-clockwise. Once loose, lift the entire stopper mechanism out of the drain.