Toto Flush Problem

gholmes1936 · Mar 23, 2006

I have a Toto and the flapper drops immediaetely after tripping the lever, and I mean immediately. The chain has the right amount of slack in it and is at the end of the long arm. It has the regular 3 inch flapper with the openings in it. I don't see anything else that could be adjusted. HELP!!!!!!

Ho333ard · Mar 23, 2006

Um . . . that's how it's supposed to be, no?
You hold the lever for a few seconds to empty the tank before releasing.

Sponsor · 2022-01-29T12:20:58-0800

Terry · Mar 23, 2006

Looking inside the ST743S Toto Drake tank

It's not a problem.
If it were a 2" flapper, it would need to stay up longer to let the same amount of water out.

Since it's a 3", it happens much quicker.
Modern toilets don't use all of the water in the tank.
The tanks hold more than 1.6 gallon though.
Not matter how water the tanks hold, it's still designed to just release a small portion.
By having more water in the tank, it raises the water level and that adds force to the flush.
The flappers on these work just as you described.
The "are" very quck.

dc_homeplumber · Mar 23, 2006

gholmes1936 said:
I have a Toto and the flapper drops immediaetely after tripping the lever, and I mean immediately. The chain has the right amount of slack in it and is at the end of the long arm. It has the regular 3 inch flapper with the openings in it. I don't see anything else that could be adjusted. HELP!!!!!!

It should be allowing a gallon and a half of water through to adequately flush. When you say "immediately," it sounds as though the flapper drops too soon to allow even a gallon and a half to pass. I would replace the flapper. The flappers for G-Max and Power Gravity Toto toilets are available on this site and elsewhere. If this is not the problem, at least you won't be out a fortune.

gholmes1936 · Mar 23, 2006

ho333ard said:
Um . . . that's how it's supposed to be, no?
You hold the lever for a few seconds to empty the tank before releasing.

Normally, like on my other toto toilet I trip the lever and let go and the flapper goes down slowly. At least slow enough so that the minimum amount of water flows. When I said that it goes down immedeately I meant in a split second the flapper goes down. There is still almo0st half of the water left in the tank. And it's only 1.5 gpf.

Cass · Mar 24, 2006

#1 does it flush right even though the flapper shuts fast?

#2 Did this just start or has it always been like this.

#3 Sounds like it could be a handle problem if the chain is adjusted right, not lifting the flapper quite high enough.

Be sure the handle arm is not contacting the fill valve.

SteveW · Mar 24, 2006

Just to re-state what others have already said, in modern low-flow toilets, the 1.6 gal. figure doesn't mean the tank holds only 1.6 gal -- it means 1.6 gal. go from the tank into the bowl.

The tanks are deliberately designed to hold more water than is actually "flushed" -- the water that stays in the tank serves to provide more "oomph" to that which DOES leave the tank by increasing the "head pressure" (I think it's called).

gholmes1936 · Mar 27, 2006

Cass said:
#1 does it flush right even though the flapper shuts fast?

#2 Did this just start or has it always been like this.

#3 Sounds like it could be a handle problem if the chain is adjusted right, not lifting the flapper quite high enough.

Be sure the handle arm is not contacting the fill valve.

To answer:
#1. I don't believe it does as it stops up very easily. No evidence of water flowing from the front of the bowl at all! My other toto allows the flap to stay up just long enough so that the correct amount of water empties, as in a slight hesitation before the flapper actually closes.

#2. It started awhile after the main valve (and flapper) were replaced by a licensed plumber.

#3. Isn't the handle just a trip lever without any type of delay thing built in? Having watched it many times I can tell you that flapper rod lifts the flapper all the way to the tube.

I don't understand "Be sure the handle arm is not contacting the fill valve."

This tank is shorter than our other Toto. It isn't one of those 90's low flow toilet types but it is lower than the other which looks more like a regular toilet. Oh, yeah it is a one piece commode also.

Terry · Mar 27, 2006

Looking inside the MS854114 or CST854 tank.
The MS854114S has the red flapper.
Did the tank parts look like this before the repair?

Lowes sells the right fill valve and the flapper for the Toto Power-Gravity series.
The Korky quietfill valve is $7.99 and the Korky Toto blue flapper is $9.87

gholmes1936 · Mar 27, 2006

Terry said:
Did the tank parts look like this before the repair?

Lowes sells the right fill valve and the flapper for the Toto Power-Gravity series.
The Korky quietfill valve is $7.99 and the Korky Toto blue flapper is $9.87

As I remember they did look like those you pictured. I wondered if color was a key to the correct parts or not at the time. There is a number inside the tank, would/could that be the model number?

Terry · Mar 27, 2006

On the Toto, that would be the toilet number.

It may be something like CST854, or CST764, something like that.
The Blue flapper lets out more water than the red one.

gholmes1936 · Mar 27, 2006

Terry said:
On the Toto, that would be the toilet number.

It may be something like CST854, or CST764, something like that.
The Blue flapper lets out more water than the red one.

The model number in the tank is C854 and has a red flapper with a yellow valve assembly. Is this correct or what? I sure appreciate all your time and help Terry.

Terry · Mar 27, 2006

The Korky is the exact replacement fill valve.

The 854 is either an Ultimate with blue flapper or the Ultramax with red flapper.

gholmes1936 · Mar 28, 2006

Terry said:
The Korky is the exact replacement fill valve.

The 854 is either an Ultimate with blue flapper or the Ultramax with red flapper.

Thank you so much for all the info Terry. It would seem that since the flapper in the 854 tank is red, that maybe it needs a blue one? Since the blue one lets out more water. Where can I find out for sure. Possibly if I could find the original installation documents it would help a lot.

Oh, my other Toto is an ST743S and has two different colors in it's insides.

gholmes1936 · Apr 4, 2006

gholmes1936 said:
Thank you so much for all the info Terry. It would seem that since the flapper in the 854 tank is red, that maybe it needs a blue one? Since the blue one lets out more water. Where can I find out for sure. Possibly if I could find the original installation documents it would help a lot.

Oh, my other Toto is an ST743S and has two different colors in it's insides.

I purchased the blue KORKY flapper at Lowes and installed it and so far everything is right with the world.

Thank you so very much Terry.
George in Austin, Texas

SteveW · Apr 4, 2006

"Short" flush cycle = normal?

I just had my first Toto experience -- stayed at a hotel in Kansas City with Totos in the rooms. I think it might have been a Drake but not sure. I now understand the sense that folks get when they first use one. Seems like the flapper does come down almost immediately, and in fact when I lifted the tank lid and watched, only a little more than half the tank emptied into the bowl.

Worked perfectly, every time. Just takes getting used to.

Terry · Apr 9, 2006

The tabs of the flush valve allow either the red or the blue.
Most places seem to carry both colors now.

Spokaneman · Apr 10, 2006

SteveW said:
I just had my first Toto experience -- stayed at a hotel in Kansas City with Totos in the rooms. I think it might have been a Drake but not sure. I now understand the sense that folks get when they first use one. Seems like the flapper does come down almost immediately, and in fact when I lifted the tank lid and watched, only a little more than half the tank emptied into the bowl.

Worked perfectly, every time. Just takes getting used to.

Curiosity got the better of me so I took the top off of my Vespin an flushed, sure enough only about 2/3 of the volume in the tank was used in the flush. Apparently the additional head (no pun intended) pressure is used to push the flush down. I suppose if you needed more water for a bigger flush, you could hold the handle for a couple of seconds.

No wonder my wife thinks I'm nuts, most folks just don't care.

Jadnashua · Apr 10, 2006

That's exactly right...the height of the water is part of the engineered means to an end...getting enough velocity to flush with the minimum water. That is also one reason why you need to be careful about the flapper valve you use to replace the original when it eventually goes bad...an incorrectly designed one might close early or late, either not generating a good flush, or wasting water.

rhutchin02 · Dec 6, 2009

my 854 toto

The original flapper on my Toto toilet had a plastic "fin" on the other side of the fill pipe. This design delayed the drop of the flapper. With this configuration all was fine. I cannot find this type of replacement. I believe Toto had to have designed this type for a reason. I believe they should step up and solve the issues people are having with rhe early drop of the flapper.
Is there anyone familiar with the plastic fin I am speaking of?

Toto Flush Problem

Users who are viewing this thread

New Member

New Member

Paid Advertisement

The Plumbing Wizard

dc_homeplumber

Guest

New Member

Plumber

DIY Senior Member

New Member

The Plumbing Wizard

New Member

The Plumbing Wizard

New Member

The Plumbing Wizard

New Member

New Member

DIY Senior Member

The Plumbing Wizard

New Member

Retired Defense Industry Engineer xxx

New Member

Similar threads