Sink Lever Repair: Fix a Leaky or Stuck Sink Lever

Quick answer

To fix a sink lever, first turn off the water supply, then remove the handle and inspect the cartridge or O-rings for wear. Replace damaged parts and reassemble the sink.

Confirm the symptom

• Water continues to run after adjusting the lever
• Lever is stiff or difficult to move
• Dripping from the base of the faucet
• Lever won't turn to shut off water completely

Tools and prep

• Adjustable wrench or basin wrench
• Screwdriver (flathead or Phillips, depending on faucet)
• Replacement cartridge or O-rings
• Penetrating oil (for stuck levers)
• Towel or rag to catch drips
• Turn off water supply under sink before starting

Step-by-step troubleshooting

1. Turn Off Water Supply
   Do: Locate and turn off the shut-off valves under the sink.
   Observe: Water stops flowing from the faucet.
   Means: Water supply is safely turned off.
   Next: Remove the sink lever handle.
2. Remove the Sink Lever Handle
   Do: Use a screwdriver to remove the handle screw and gently pull the handle off.
   Observe: Handle comes off easily, revealing the cartridge or stem.
   Means: Access to internal components is gained.
   Next: Inspect the cartridge or O-rings.
3. Inspect the Cartridge or O-Rings
   Do: Look for cracks, wear, or mineral buildup on the cartridge or O-rings.
   Observe: Visible damage or debris on the components.
   Means: Damaged parts are likely causing the issue.
   Next: Replace the damaged parts.
4. Replace the Damaged Parts
   Do: Remove the old cartridge or O-rings and install the new ones.
   Observe: New parts fit snugly and are properly aligned.
   Means: Components are replaced and ready for testing.
   Next: Reassemble the sink.
5. Reassemble the Sink
   Do: Reinstall the handle and secure it with the screw.
   Observe: Handle moves smoothly and water shuts off completely.
   Means: Repair is complete and functional.
   Next: Test the sink.
6. Test the Sink
   Do: Turn the water supply back on and test the lever for leaks or stiffness.
   Observe: Water flows and stops without leaks or resistance.
   Means: Sink is working properly.
   Next: Monitor for any issues over the next few days.

Common causes

Parts matching

To find the right parts for your sink lever, look for the manufacturer and model number on the faucet. If it's not visible, take the old cartridge or O-rings to a hardware store for a match.

• Check the faucet for manufacturer and model number
• Take old parts to the store for an exact match
• Use a cartridge identification tool online if available
• Verify thread size and type for compatibility
• Purchase a replacement kit if unsure

If you're unsure about the part, ask a hardware store associate for help. They can often identify the part by the old one or model number.

When to call a professional

• Water continues to leak after replacing parts
• The sink lever is still stiff or doesn't function properly
• You notice water damage or mold under the sink
• You're unable to find the correct replacement parts
• The faucet is old or has extensive corrosion

FAQ

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