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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, Needle Nose Pliers
  • 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.

This article provides step-by-step instructions for faucets using the 146789 Spout O-Ring kit. You may have received additional service kits that require you to remove the Cartridge Nut and Cartridge (#5), however, it is not necessary to remove them for this repair.


Parts Legend:

1-Upper Bearing Washer


3-Spout O-rings

4-Valve Body

5-Cartridge Nut and Cartridge



1. Remove the Upper Bearing Washer (#1)*. Use a pair of needle nose pliers to gently pull the tabs at the top of the Upper Bearing Washer (#1) from the Valve Body (#4), until it is loose and can be lifted from the faucet. 

*The piece will need to be re-used and be aware it is designed with a split/break in it. 



2. Remove the Spout (#2) by lifting upward to remove it from the Valve Body (#4).

3. Removing the Spout O-rings (#3). Take note of their position on the Valve Body (#4), the new O-rings will need to be installed in the exact same locations. A flathead screwdriver can be used for this step.




1. Apply a thin layer of silicone grease from the provided packet to each of the rubber Spout O-rings (#3). Install the new rubber Spout O-rings (#3) back into the original grooves on the Valve Body (#4). 

2. Slide the Spout (#2) back onto the faucet until it is flush at the bottom with the deck or escutcheon plate.




3. Slide the Upper Bearing Washer (#1) down the valve body positioning so the split/break lines up with the vertical rib (A). Tuck the bottom of the Upper Bearing Washer (#1) into the top of the Spout (#2) while pressing the prongs under the Valve overhang (B). To test for proper installation, confirm the Spout (#2) does not pull up by gently lifting it up. 


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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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