How to Adjust the Chain Float on a Low Flow Toilet


Low-flow toilets are designed to use less water, about one-half the amount of water for each flush. The chain float designates how much water leaves the tank and enters the bowl for each flush. The chain float is fully adjustable to enable longer flushes that use more water or shorter flushes to conserve water usage.

Things You'll Need

  • Flashlight (optional)
  • Turn the water supply valve to the toilet off by turning it counterclockwise. Flush the toilet to evacuate the tank of water.

  • Grasp the plastic retainer clip on the top of the float between a thumb and forefinger. Pull the clip straight outwards away from the chain to remove it.

  • Remove the bottom retainer clip underneath the float in the same manner.

  • Grasp the float in one hand and hold the chain in the other hand. Move the float lower on the chain to provide more water and a longer flush time per each flush. Move the float higher on the chain for less water usage and a shorter flush time with each flush.

  • Replace both the top and bottom clips by sliding them onto the chain above and below the float. The clips will lock into position between two balls on the chain.

  • Turn the water supply valve to the toilet on by turning it clockwise. Flush the toilet to see if any more adjustments are necessary.

Tips & Warnings

  • Use a flashlight if necessary to see the retainer clips on the chain float.
  • The chain float is foam and rides on the top of the water level when the toilet flushes and the water evacuates the tank.
  • After turning the water supply valve on, the toilet will require two flushes to refill and then evacuate the tank of water.
  • When the float is higher on the chain, there may not be enough water flow to flush the toilet completely.

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