Step 3 · Install the Pop-Up Stopper Assembly
Drop the pop-up stopper into the drain opening from above. From underneath, identify the pivot rod opening on the drain body's side. Unscrew the pivot rod nut. Insert the pivot rod through the opening, ensuring the plastic ball seats correctly in the housing. Critically, you must guide the end of the pivot rod through the loop on the bottom of the pop-up stopper. You may need to jiggle the stopper to align the loop. Once the rod is through, thread the pivot rod nut back on and hand-tighten. Use pliers for a final quarter-turn to prevent leaks. Attach the spring clip to the end of the pivot rod. Slide the clevis strap onto the spring clip. Drop the lift rod down through its designated hole in the faucet. Insert the bottom of the lift rod through one of the holes in the clevis strap and secure it with the setscrew. Test the action by lifting and pushing the rod; the stopper should move up and down smoothly. Adjust the rod's position on the clevis strap if needed.