How do I adjust the pressure in a Kohler pressurized flush toilet

You probably have one of the newer Cimarron-series toilets that feature what Kohler calls "AquaPiston" technology. These gadgets use the water pressure in your supply lines to pressurize a charge of flush water in the tank, causing the flush water to rush into the bowl at high pressure and velocity. Many Cimarron-series toilets use only 1.28 gpf (gallons per flush), compared to the current industry standard of 1.6 gpf for conventional gravity-flush units. Reducing the gpf rating by 20% requires pressurizing the water in the tank, and the release of pressurized water makes a lot of noise. I'm afraid your toilet will always be noisier than what you may be used to.

Valve needs adjustment (Small screws on top) or replaced. tank ball rod bent or turned down.Depends on model.

As a general rule, no However contact Kohler, they may give you a discount on a replacement toilet, as there have been some recall issues.

Water pressure in the house may be to high and not allowing flappers to drop. check pressure and adjust as needed.

try turning the fill valve down

order a water pump. so the preasure of the water can suppy the requirements pressure of your water closet

As long as this toilet is NOT a pressure assist toilet. Then it probably has a water saver flapper that you can replace with a non water saver flapper. This will allow it to flush more. Be advised you may have to adjust the water level after the change to prevent it from double flushing. Hope this helps.

you should be able to adjust flush from filler valve raise water level

This type of flush system can be re presurised quickly by holding down the flush handle for about good 2 minutes, then release , wait for the tank to be refilled with water.
Now you can flush away your inner rotting mess down tube good-by...

Hi DavidofCA

I am with the Kohler Customer Care Center. My name is Mike. My phone number is 920-208-4622.

If you still need help with this issue please contact me. Thank you