Lift the stopper to the open position
Look for a visible set screw, knob, or linkage on the stopper
Loosen the set screw with the correct screwdriver or Allen wrench
Unscrew the stopper counterclockwise if it is threaded
Pull the stopper straight up and out
If it is a lift-and-turn stopper, remove the knob first if needed
If it is a toe-touch stopper, unscrew the cap and lift it out
If it is a push-pull stopper, twist and lift it out
If it is a trip-lever stopper, remove the overflow plate and pull out the linkage
If it is stuck, use pliers with a cloth to protect the finish
Clean any debris from the drain opening after removal