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Thread: Toto Toilet Flapper Issue

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  1. #1
    DIY Junior Member adeutsch's Avatar
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    Default Toto Toilet Flapper Issue

    Hi,

    i've had my Toto toilet for about a year now and I'm noticing a couple of issues. They are most probably related but I'm no expert or for that matter a novice either.

    Basically my toilet will run constantly because after flushing the stopper will not cover the hole completely. When i make the slight adjustment by hand it stops running, which makes sense. However, sometimes the tank wont re-fill after flushing and the bowl wont flush but has a constant drain. The water continuously runs but the tank does not fill up. I figure its just running straight through the tank through the bowl and then down the drain. I can not stop this action and am forced to shut off the water supply. After a few minutes wiht the water turned off it returns to normal function.

    I'm sure i can adjust the stopper or get a new stopper to cover the hole and that should deal with the first problem, but i think i have a much larger issue with the fill valve and the internal workings.

    Any idea of what i should do? It's kind of annoying when your toilet works correctly only 10% of the time.

    thanks in advance for your responses.

  2. #2
    Forum Admin, Expert Plumber Terry's Avatar
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    Trouble shooting

    Fill the tank, turn off water supply at the wall and take a note of how high the water is in the tank.

    If the water level drops in the tank, then that needs to be addressed first.

    If the water level stays in the tank, turn the water supply back on, and see if the fill valve is shutting off consistently.
    The water in the tank, should stay below the overflow tube.
    If the water keeps overfilling, then the fill valve needs work.
    It could need a simple cleaning, or a part, or even replacement.
    Can you post a picture here less then 800 x 800 pixels as an attachment of the inside of the tank.

  3. #3
    DIY Junior Member adeutsch's Avatar
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    Thanks for your reply.

    Basically there are 3 states that the toilet can be in.

    1. Normal - we like that. About 15% of the time.
    2. Running - this happens when the red plunger does not full cover the drainage hole. It will leave a tine slit open and can be fixed by pulling the plunger to cover the hole completely. About 75%.
    3. Full run - Not sure what is happening here but the tank does not fill up and the bowl does not drain. Instead there is a constant running of water and there is a constant drain from the bowl but neither the bowl or the tank changes levels. The tank is about 1/2 inch full and the bowl is a more full than normal (case #1). I fix this by turning off the water supply and when I turn it back on, it miraculously works. 10% of the time.

    My hunch is that if i fix case #2 everything would be fine. My other hunch is that there might be something loose or just slightly off within the mechanism. Since it doesn't happen all the time.

    Any ideas of how to fix these 2 issues? I've attached the picture, i hope it works.

    Thanks so much for your help.

    Andy
    Attached Images Attached Images  

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    DIY Junior Member adeutsch's Avatar
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    Default

    you can see the top left of the red plunger is where it does not fully cover. in the picture it is working fine but if it is just slightly off there will be space for the water to flow.

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    Retired Defense Industry Engineer jadnashua's Avatar
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    Default

    I'd take a little slack out of the chain and move the anchor on the arm to a point closer to over the flapper and see if that helps.

    Depending on your water chlorine levels, the rubber on the flapper will fail at different times. Where I live, I can get about 4-5 years, but if you have high chlorine levels, yours could be dead much sooner. What I find happens is that it gets softer, and the center gets depressed because of the water pressure from just sitting there most of the time. At some point once this starts to happen, it doesn't seal well all the time and I replace it. They're warrantied for, I think, longer than that, but I ususally just buy one.
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

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    Forum Admin, Expert Plumber Terry's Avatar
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    You can try bending the brass rod so that the flapper gets lifted straight up and down.

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