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Replace a broken toilet float

Replacing a broken toilet float is a straightforward task that ensures your toilet refills and shuts off properly. Here's a step-by-step guide:


1. Gather Tools and Materials

  • Adjustable wrench or pliers

  • Replacement toilet float or fill valve (ensure compatibility with your toilet model)

  • Sponge or towel (for any water spills)


2. Turn Off the Water Supply

  1. Locate the shut-off valve behind or near the toilet and turn it clockwise to close.

  2. Flush the toilet to drain as much water as possible from the tank.

  3. Use a sponge or towel to soak up any remaining water in the tank.


3. Remove the Old Float

  1. Identify the float type:

    • Older toilets may have a float ball connected to an arm.

    • Modern toilets often use a fill valve with an integrated float mechanism.

  2. Disconnect the float assembly:

    • For a float ball:

      • Unscrew the ball from the float arm.

      • If the arm is broken, remove it by unscrewing it from the fill valve.

    • For an integrated float:

      • Disconnect the water supply line from the fill valve using pliers or a wrench.

      • Unscrew the locking nut underneath the tank to remove the entire fill valve assembly.


4. Install the New Float

  1. Position the new fill valve or float assembly:

    • Insert the new fill valve into the hole at the bottom of the tank.

    • Adjust the height of the fill valve (if adjustable) to match the waterline in the tank.

  2. Secure the fill valve:

    • Tighten the locking nut underneath the tank by hand and then give it a final turn with a wrench. Avoid overtightening to prevent cracks.

  3. Reattach the water supply line:

    • Connect the supply line to the fill valve and tighten securely.


5. Test the Float

  1. Turn the water back on:

    • Slowly open the shut-off valve to fill the tank.

  2. Adjust the float level:

    • For a float ball:

      • Bend the arm gently up or down to set the water level.

    • For an integrated float:

      • Use the adjustment screw or clip to raise or lower the float to the desired water level (usually marked inside the tank).

  3. Check for leaks:

    • Inspect the connections and tank base to ensure there are no leaks.


6. Final Check

  • Flush the toilet a few times to ensure the float operates smoothly and stops water flow at the correct level.


Tips

  • Compatibility: Bring the old float or fill valve to the hardware store to find a suitable replacement.

  • Water level adjustment: Ensure the float shuts off the water below the top of the overflow tube to prevent continuous running.

  • Clean the area: Take the opportunity to clean sediment or debris from the tank.

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