A.For flush valves with a float attached to the flapper chain, the "bead setting" refers to where on the chain the float is - in other words, the distance from the top of the flapper to the float. This controls
how much water leaves the tank every time you flush the toilet. The higher the float, the less water that leaves the tank.To adjust the bead setting, you gently pull the float up or down the chain to the desired length. Sometimes
there is a plastic piece you will need to temporarily remove to move the float. Just re-attach this piece once the float is in the correct position.