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Moen Solutions

146789 Spout O-Ring Kit

This article will provide step-by-step instructions for replacing this service kit.


  • The water supply shut off valves must be turned off- see article How to Turn Off the Water Supply to the Faucet.
  • Recommended Tools: Flathead Screwdriver
  • The following instructions assume the handle and associated handle pieces have been removed. For additional details, visit and select the type of faucet you are repairing. The faucet guide will contain specific information on the handle assemblies associated with that style of product .

    Do not remove the cartridge nut or the cartridge for this repair.



1. Remove the upper bearing washer (#1). 

Caution: The upper bearing washer (#B) will need to be reused, be careful not to damage the the part. Use a pair of needle nose pliers and slightly pull back the prongs at the top of the upper bearing washer (#B) until it is loose, and lift it from the faucet. 


2. Pull up on the spout (#2) to remove it.

3. Locate and gently remove the rubber O-rings (#3) from the valve body (#4). Be very careful not to damage the valve body (#4), it is not replaceable. Take note of where each of the black O-rings were removed from off the black valve body for proper placement of the new spout O-ring.


1. Apply a thin layer of silicone grease (provided in the 146789 O-ring kit) to each of the rubber O-rings (#3) and install the new rubber O-rings (#3) onto the valve body (#4). Slide the spout (#2) over the valve body (#4).



2. The upper bearing washer (#1) is designed to hold the faucet receptor in place. It is designed with a split in it for easy installation. Be careful not to expand or stretch the upper bearing washer (#1) out of shape.

  • Carefully slide the upper bearing washer (#1) down the valve body so the split lines up with the vertical rib (A). Be careful not to expand or stretch the upper bearing washer (#1) out of shape. The bottom of the upper bearing washer (#1) tucks into the top of the receptor which will allow the prongs to tuck under the valve overhang (C) . The spout should not pull up if the upper bearing washer (#1) was installed properly. To test for movement, gently pull up on the spout.

For additional information on Moen products visit and select the type of product you are repairing. The guide will contain repair details, troubleshooting and specific information on assembling handles associated with that style of product.

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