Reinstall the pop-up sink drain and adjust the stopper handle to complete the repair.
This repair is continued from How to Retrieve an Item Dropped Down the Sink Drain – Part 3.
Install the Pop-Up Drain
To reassemble the pop-up drain, orient the stopper such that the bottom loop faces the back of sink to catch the end of the pivot rod:

Insert the stopper and hold almost all the way in while you insert the pivot rod into the drain T.

Insert the pivot rod into the drain T while holding the sink stopper. Working by feel, a bit of trial and error is needed to insert the rod into the end of sink stopper. You’ll have it in a couple seconds.

Next steps:
- Screw on the pivot rod retaining nut.
- Place the spring clip on the rod.
- Put rod end in the 2nd hole of the clevis (or whichever hole it was in before).
- Secure the rod and clevis with the spring clip.

Adjust the Pop-Up Drain Travel
The vertical travel or up/down movement of the pop-up drain is adjusted by sliding the spring clip along the pivot rod.
Begin by pushing the drain handle all the way down (see inset photo below) and slide the spring clip along the pivot rod until the height of the sink stopper is approximately 1/4 inch above the drain as shown. If you later find the water isn’t draining quickly enough, increase the stopper clearance until you are satisfied.

Pull the drain handle up to confirm the stopper is fully seated with a good seal.

Test the Sink Drain for Leaks
Test for leaks by closing the drain and filling the sink with some water. Watch the water level while listening for leaks.

Open the drain and inspect the P-trap and drain plumbing for leaks. If you’re worried about a slow drip that might not be readily evident, place a section of toilet paper on the bottom of the sink cabinet under the trap. Any slow drips will be readily seen. Tighten the slip nuts a bit if necessary.
Take care,
Bob Jackson