Some drains have stoppers that are spring loaded operated by a push of the toe or by hand while others use a trip lever mounted on the bathtub s overflow plate.
Fix bathtub drain stopper spring.
Many hardware and plumbing stores will rent a device called a drain removal tool.
Remove the screws that secure the overflow cover plate.
On the end will be a weighted plug or a spring depending on the kind of stopper mechanism you have.
How to fix a bathtub pop up drain stopper.
Turn this nut clockwise through three or four rotations with a pair of adjustable pliers to shorten the linkage.
Place the plunger threaded rod and trip lever back into the hole in the tub and screw the plate back into place.
Close the stopper run some water into the tub and see if it stays.
Adjust the nut on the linkage lengthen it to raise the stopper or shorten it to let it drop lower.
This is necessary if the rod mechanism no longer functions.
A pop up tub train stopper can be replaced in a couple of minutes so long as you know what you re doing.
Usually the problem is easy to fix though the procedures vary depending on what type of tub stopper you have.
Remove the drain by turning the flange counter clockwise.
Pull the lever out then lift it straight upward to remove the linage from behind the tub.
Repair a pop up tub drain stopper with help from a.
Feed the linkage back into the overflow hole and let the weight fall freely.
If the water drains out repeat the process above and lower the plunger a little bit more until you get the bathwater to stay in.
These can be hard to remove.