While installing a Kohler pop-up assembly can be a relatively straightforward process, you may encounter some common challenges along the way. In this blog, we will discuss troubleshooting tips for handling these challenges and ensuring a successful installation of the Kohler pop-up assembly, leading to a seamless and efficient sink drain system.

Challenge 1: Leaks Around the Pop-Up Assembly If you notice leaks around the pop-up assembly, it is likely due to an improper seal between the assembly and the sink. To troubleshoot this issue, disassemble the pop-up assembly and reapply plumber’s putty around the underside of the flange. Make sure the putty creates a complete and watertight seal when reinstalling the assembly.

Challenge 2: Difficult Movement of the Stopper If the stopper does not move smoothly or gets stuck, there might be an issue with the pivot rod or lift rod. Check the pivot rod’s alignment with the stopper’s slot and make sure it moves freely. If the lift rod is too tight or too loose, adjust it to achieve proper movement of the stopper.

Challenge 3: Water Drains Slowly A slow-draining sink could indicate a partial blockage in the drain. Before reinstalling the pop-up assembly, clear any debris or blockages from the drain hole to ensure smooth water flow.

Challenge 4: Pop-Up Assembly Won’t Stay Up If the pop-up assembly does not stay up when you lift the lift rod, the pivot rod might be too short. Adjust the pivot rod length to ensure the stopper stays up when not in use.

Challenge 5: Difficulty Securing the Pop-Up Assembly Sometimes, tightening the nut onto the threaded rod can be challenging, especially in tight spaces under the sink. Use pliers or a basin wrench to reach and secure the nut firmly onto the threaded rod.

Challenge 6: Inconsistent Water Flow Inconsistent water flow from the faucet may result from the pop-up assembly interfering with the faucet’s aerator. Adjust the lift rod to ensure the stopper does not block the aerator when in the closed position.


Installing a Kohler pop-up assembly may present some challenges, but with the right troubleshooting tips, you can overcome these issues and achieve a successful installation. By addressing leaks, ensuring smooth movement of the stopper, and checking for any blockages, you can guarantee a smoothly functioning sink drainage system. If you encounter any difficulties during the installation process, take your time and use the troubleshooting tips provided to ensure a seamless and efficient pop-up assembly installation.