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Bathroom Faucet: Leaking Under The Sink Base


If the bathroom faucet is leaking under the sink 24 hours a day, use Figure 1 below to check the home shut off valves (angle stop) (#1), the house supply lines (#2) that lead to the faucet and the Moen faucet supply lines (#3). When the leak is coming from from the house supply lines or the home shut off valves (#1 or 2), you will need to purchase those from your local home store. If the faucet is leaking from the Moen faucet supply lines (#3), contact us by calling 1-800-BUY-MOEN. If the bathroom faucet is only leaking under the sink after the faucet has been used, see Figure pointing to the cluster of faucet hose connections located below the sink. The faucet will need to be identified for the correct part numbers, contact us by calling 1-800-BUY-MOEN.

Figure 1

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Figure 2

(Configurations vary based on the model)

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For additional information on Moen products visit solutions.moen.com 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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