[Bill14564]

Originally Posted by retiredguy123

I don't know what you mean by an "official" dual-flush mechanism. My toilets have a Kohler sticker inside the tank that state that the replacement parts should be a "dual flush" mechanism, not a single flush mechanism. The handle is not a two part handle, but the toilet does function as a dual flush toilet. If you press the handle down and release it immediately, you get a light flush, but if you hold it down for a second or two, you get a heavy flush. I think that is the way it is designed to function, but they may have refined the design of later models to use a two part handle and a different canister. But, according to the 2014 Kohler document on my tank (and hundreds of others in The Villages), the toilet is a dual flush toilet.

My 2014 sticker lists part numbers of replacement seals for both dual-flush and single-flush parts. I understood that to mean that if I had a dual-flush mechanism I chose those part numbers and if I had a single-flush mechanism I chose the other part numbers. Perhaps we have different stickers.

By "official" I mean the complicated, solid canister system sold as a dual-flush canister that works with either two buttons on the top of the tank or a two-piece handle.

Again, I agree that the mechanism with the hollow tube canister that I have works the way you describe. Maybe you are correct and the presence of a tube indicates a dual-flush system and it was modified in subsequent years to use the solid canister and two-piece handle.