How to Fix a Running Toilet with a Button Flush: A Comprehensive Guide

Ah, the dreaded running toilet. It’s a nuisance that not only wastes water but can also cost you a pretty penny on your water bill.

If you’re struggling with this issue and wondering “how to fix a running toilet with a button flush,” you’re in luck – this guide will walk you through diagnosing and repairing your button flush toilet in no time.

As a handyman, I’ve encountered my share of running toilets, and I can attest that fixing them can be quite rewarding, especially when it comes to those with a button flush mechanism.

How to Fix a Running Toilet with a Button Flush - A Comprehensive Guide

Understanding Button Flush Mechanisms

Before diving into the repairs, it’s crucial to understand how button flush mechanisms work.

Unlike traditional lever-style flush systems, button flush toilets feature a dual flush valve and a push-button mechanism. When you press the button, a cable or rod activates the flush valve, releasing water into the bowl.

This type of system is more eco-friendly, as it usually offers two flushing options – a full flush for solid waste and a partial flush for liquid waste.

Common Causes of a Running Toilet with a Button Flush

There are several possible culprits behind a running toilet with a button flush:

  • Dual flush valve issues: A damaged or malfunctioning dual flush valve can cause water to continuously flow into the bowl.
  • Button or cable problems: Issues with the button or cable connecting the button to the flush valve can prevent proper valve operation.
  • Seal and gasket wear: Over time, seals and gaskets within the flush mechanism can wear out, allowing water to leak.

Diagnosing the Issue

To diagnose the issue with your running toilet, start by inspecting the button flush mechanism:

  1. Remove the toilet tank lid and carefully set it aside.
  2. Check the button and cable for any visible damage or disconnection.
  3. Inspect the dual flush valve and seals for wear or damage.

Take note of any issues you find, as this will guide your repair process.

Step-by-Step Guide: How to Fix a Running Toilet with a Button Flush

Repairing or Replacing the Dual Flush Valve

If you’ve determined that the dual flush valve is the culprit, follow these steps:

  1. Turn off the water supply to the toilet and flush to empty the tank.
  2. Disconnect the button or cable from the flush valve.
  3. Unscrew and remove the flush valve from the tank, being mindful of any washers or seals.
  4. Inspect the valve for damage or wear. If necessary, replace it with a new one, ensuring that all seals and washers are correctly positioned.
  5. Reinstall the flush valve, reconnect the button or cable, and turn the water supply back on. Test the flush mechanism for proper operation.

Addressing Button or Cable Problems

If the button or cable is causing the issue, try these fixes:

  1. Ensure that the button is correctly seated and aligned with the pushrod or cable.
  2. Inspect the cable or pushrod for damage, and replace it if necessary.
  3. Adjust the cable or pushrod length, if applicable, to ensure proper engagement with the flush valve.

Replacing Worn Seals and Gaskets

If worn seals or gaskets are to blame, follow these steps:

  1. Turn off the water supply, flush the toilet, and remove the tank lid.
  2. Locate and remove the faulty seal or gasket, taking note of its position within the mechanism.
  3. Replace the worn seal or gasket with a new one, ensuring it’s correctly positioned.
  4. Reassemble the flush mechanism, turn the water supply back on, and test the toilet for proper operation.

Preventive Maintenance and Tips

To keep your button flush toilet running smoothly, follow these maintenance and tips:

  1. Regular inspections: Periodically inspect the button flush mechanism, seals, and gaskets for signs of wear or damage. Address any issues promptly to prevent further complications.
  2. Keep it clean: Clean your toilet tank and flush mechanism components regularly to prevent buildup and ensure smooth operation.
  3. Use quality replacement parts: When replacing worn or damaged parts, opt for high-quality components to ensure durability and longevity.


Fixing a running toilet with a button flush doesn’t have to be a daunting task. With the right knowledge and some handyman know-how, you can diagnose and repair the issue with confidence.

Remember to conduct regular maintenance checks and keep your toilet components clean to avoid future problems. Happy flushing!

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