Question about Toto Dartmouth 2pc. E/F Toilet CST754SF-01

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Toto Dartmouth toilet flapper/chain design flaw

I have a toto toilet. The flapper/chain and handle rod layout is such that the flapper is pulled sideways when the toilet is flushed, not pulled straight up, but sideways. That is the design. The problem; the flapper must return itself and square up on the hole to properly seal. Sometimes it works, sometimes it doesn't and the toilet runs. The flapper is perfect, not worn. The toilet has done this since new. If I didn't bend the rod to somewhat lessen the sideways pull, it would be worse. Design problem, bad layout. A new replacement rod with an offset would fix it. Any available? Why would someone layout a flush systems where the flapper is pulled sideways and must fight to return to proper seating position? Anyone?

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  • Anonymous Mar 24, 2009

    We do have the same problem, TOTO do not consistence on their product. They use other system. Rubber Flapper could not find anymore on the market.

  • Anonymous Mar 23, 2014

    toilet doesn't flush complety

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Your right this is a poor design. Space was the main reason for this and functionality was sacrificed. However, you can get a replacement rod at a major plumbing store. You could rig it by attaching a stem to the valve assembly. Allow the chain or rubber piece to slide over it. It is kind of like putting a permanent finger in the path of the chain to give it a "direct" lift up. This would then force the chain to go up instead of at an angle.

Posted on Jan 28, 2009

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