Introduction
When a faucet starts to leak, it may become difficult to turn on/off and you may experience inconsistent temperature issues. If it is difficult to turn the handle or you notice continuous dripping after shutting off the faucet, it is likely that you will need to replace the cartridge.
This guide will provide you with the necessary steps to replace the Moen one-handle replacement cartridge, Model 1225. To find the specific cartridge type, identify the faucet model by checking the spout, plate, or handle, and visit www.moen.com for product specifications.
Prior to starting this procedure, you will need to locate the main water shutoff valve for your home. If your property is equipped with a curb stop valve, you will need your meter key, also known as a valve key, to proceed with step 1 of this guide.
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Turn off the main water supply by inserting your meter key into the curb stop valve handle and rotating it 180 degrees counterclockwise to the closed position.
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Use a Phillips screwdriver to unscrew the connecting handle screw (10-24 x 1-1/8" Button Head Phillips screw).
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Remove the handle.
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Using needle-nose pliers, clamp the tip of the notch of the cartridge retaining clip and pull it upwards to remove.
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Using a pair of vise grips, clamp firmly onto the brass stem and pull out the old 1225 cartridge.
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On the new 1225 cartridge, orient the volume control holes parallel to the floor.
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Insert the new 1225 cartridge into the valve.
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Insert the white twisting cap into the grooves of the new cartridge and push the cartridge into the valve.
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Remove the white twisting cap.
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Turn on the main water supply by inserting your meter key into the curb stop valve handle and rotating it 180 degrees clockwise to the open position.
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Clamp the brass stem with vice grips and rotate it 90 degrees to the left, checking the water temperature for hot water.
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From this position, rotate the brass stem 180 degrees to the right, checking the water temperature for cold water.
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Insert the handle onto the stop tube.
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Use a Phillips screwdriver to screw in the connecting handle screw (10-24 x 1-1/8" Button Head Phillips screw).
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If your faucet continues to leak after replacing the cartridge, there may be another underlying issue causing the problem with your plumbing. Inspect the O-rings, seals, and other components of the faucet for any damage and consult professional assistance to resolve the issue.
