Quote:
Originally Posted by Bill14564
I suspect the K4407 stamped into the tank is the design of the tank itself, not the flush mechanism.
If you have a black, hollow canister and a single-piece lever I believe that is officially a single-flush system. It works as you say, a quick release is about half the water in the tank and a longer release is the full tank, but it is not the official dual-flush mechanism.
The Kohler dual-flush mechanism has a two-part handle (offering two separate flushes) and a complicated, solid canister.
(at least according to the youtube DIY videos)
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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.