How do I know what size flapper replacement I need? The only thing I can read on the flapper is the no.400 The fill valve and flapper are both original and the fill valve is Kohler Ingenium 89442AA

SOURCE: kohler one piece part number 1013282

Hi kayela,

I'm Harvey the Master Plumber.

Your question is: Just replace the fill valve for kohler one piece andthe fill valve sprays a stream of water out of the top and onto the undersideof the lid is that supposed to happen?

For some reason I can't seem to get the picture up. Nevertheless, the answer is no, it should not be leaking. Did you take a picture of the original before removal? Do you still have the original? Look carefully at the diference between the two. Make sure it's an exact duplicate and isn't missing parts. These one piece toilet parts are expensive but the suplier sometimes makes mistakes. You can only solve this problem if they match.

Feel free contact me again!
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Thank you,
Harvey your Master Plumber

SOURCE: Toilet Refills Every 15-Minutes

I have minute amount of leakage into the bowl causing mold to grow. I believe that it may be the rubber seal for the flapper body to the porcelain.

SOURCE: toilet fill runs periodically works well but wastes water

Sounds like your flapper is leaking causing the water in the tank to lower until it triggers the fill valve. Replace the flapper (they're cheap and wear out easily).

SOURCE: new water valve makes ahigh pitched whistling

I had exactly the same problem. Just turn down the water pressure @ the valve on the water inlet line. While you have the toilet lid off, you may want to remove the fill valve (1/2 turn counterclockwise on the plastic nut attached to the water-in line), and clean the rubber diaphrams (there are 2). They will sometimes get gritty and this will cause some fill noises and leaking.

SOURCE: How do you get the top plastic cap off the Kohler Ingenium flush

My Kohler Ingenium has no pins. The white cap is attached to the grey lever which must be lifted up before twisting both one-eighth turn counter-clockwise, and lifting off of fill tube. Turn the water supply back on and flush the tube out (cover with cup first!). Use a thin wire rod about 12" long to gently poke down into fill tube to clear any clogs. Also check where the small flexible fill tube exits from the main fill tube. Reassemble and cross your fingers.