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CST874S toto toilet

The fill valve keeps running even when the water level is below the tube. I keep turning the screw on the top but it doesn't seem to help. Not sure how to "clean" the float type mechanism and can't find any repair manuals.

Posted by Anonymous on

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4 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
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Posted on Jan 02, 2017

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  • 68 Answers

SOURCE: Toilet keeps running after its filled

When facing the valve turn it clockwise to close. As always procede with caution.

Please rate this response and good luck, Phil

Posted on Dec 26, 2008

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  • 396 Answers

SOURCE: Toto flapper seems ok but toilet keeps slow trickle into the bowl

The water inlet valve should close completely and stop water from coming into the tank before the water level reaches the "small tube." (This is the overflow tube.)

There may be an o-ring or rubber gasket inside the valve that can be replaced. If not, you would have to replace the water inlet valve.

Posted on Oct 16, 2009

radar001
  • 1051 Answers

SOURCE: WATER KEEPS RUNNING ON TOILET

The screw can be used but only for minor adjustments. The missing tube should be replaced. If this doesn't solve the problem purchase a repair kit. The repair kit comes with everything you need for about $20 and can be installed yourself (saving $$$ if you called a plumber)

Posted on Feb 23, 2010

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1 Answer

The toto toilet keeps running over the overflow tube in the tank. I cleaned the valve which worked for a while but now is back to running. Should I replace the gravity valve?


If you can lift the float arm and it stops the water flow into the tank then the float arm needs to be adjusted. The proper adjustment will stop the water flow when the level is between 3/4" and 1" from the top of the overflow tube. The newer style valves have an adjustment screw that is easily located and can be adjusted without any dis-assembly.

Feb 19, 2011 | Toto Home

1 Answer

Have the Toto Ultramax II toilet and it was installed 3 months ago. Have an issue where the GMAX fill valve is not functioning properly. The water keeps running because it always go over the fill line....


An installation guide for your toilet can be found here:

http://admin.totousa.com/Product%20Downloads/0GU013Z,%20ONE%20PIECE%20TOILETS,%20V.08.pdf

See the top of page 5 for guidance on setting the water level. Make sure you are turning the screw the correct direction (clock-wise) to reduce the fill level.

Is the refill tube properly connected? Should be connected to fill valve nipple and the other end clipped to direct flow to the inside of the overflow pipe.

Is water flow only through the overflow tube or is there leakage from the flush valve? Being only 3-months old you should not be having problems due to breakdown of rubber seals; however, check to make sure the toilet flapper is properly sealing against the flush valve.

If none of this helps with your problem you made need to replace the fill valve. On page 10 of your guide is a parts list; you can identify your part numbers and shop on-line for an idea of replacement costs:
https://www.totostore.us.com/e2wShoppingCatalog.aspx?parentId=3100066448&parentLink=2100000107:3100066448

Jan 19, 2011 | Toto MS853113S#11 UltraMax Round Toilet,...

1 Answer

Toilet fills up and water keeps on running (toto 6.0 lpt)


If any toilet runs (continues to fill) when it is not being used, there are basically 3 reasons. the most obvious is that water is leaking out all over the floor so the fill valve thinks the tank has not reached its volume of water. Next, the rubber device that keeps the water in the tank when not being used (most commonly called a flapper) has warped from time or chemicals in the water (NOTE:chlorine eats rubber for breakfast daily), and and allows water to seep past it, which lowers the water level and triggers the fill valve to come back on to top things off.
The third reason is because there is particulat in the fill valve or mineral buildup and internally it doesnt always properly seal so it can run intermittently or all the time.
All the parts on the TOTO ultramax are warranteed for 5 years so keep that in mind if it applies.
Remove the tank lid when you hear the fill vave working and look at the water level. If the water level is below the top of the white plastic tube that the flapper is connected to (often called the overflow tube), then you have a bad flapper. If the water level is going over the top of the tube then you have a defective fill valve.
Out of warranty fill valves can easily be replaced with a Lavelle "Quiet fill" available at most hardware or plumbing stores or online.
This valve is what Toto uses in most of their toilets and it is only the removeable cap that is different (subliminal advertising maybe)

Aug 08, 2010 | Toto MS853113S#01 UltraMax Round Toilet,...

2 Answers

Toilet keeps running water in back tank keeps running over top of drain hole


You don't have to replace, You just need to adjust the fill valve. If you have the ball **** type just tight the top phillips screw. If you have the newer type, close the water valve under the tank and Push down a plastic ring at the bottom of the filling valve, Push down the top of the valve, lift the plastic ring to it's place and open the water valve.

Aug 01, 2010 | Toto Home

1 Answer

Toto flapper seems ok but toilet keeps slow trickle into the bowl


The water inlet valve should close completely and stop water from coming into the tank before the water level reaches the "small tube." (This is the overflow tube.)

There may be an o-ring or rubber gasket inside the valve that can be replaced. If not, you would have to replace the water inlet valve.

Oct 16, 2009 | Home

1 Answer

My Toto keeps running


Yes, there is either a screw that can be turned lowering or raising the water level, usually found on top of the fill valve.

Or there is a lever system that raises or lowers the float, thereby raising and lowering the water level.

The first it typically found on fill valves with a float ball attatched by a metal rod to the top of the fill valve.

The second are on the "fluidmaster" type fill valves.

If you still cannot find the water level adjustment describe in detail or provide pictures of the type of fill valve you have and I will walk you through it.

Aug 16, 2009 | Toto Carlyle 1-piece Elongated Bowl Toilet

1 Answer

KEEPS RUNNING WITH WATER RUNNING IN DISCHARGE TUBE AND OVERFILLING


You need to adjust the stop on the fill valve. If it's got a float, you need to lower it so that the fill valve stops sooner. There's a metal clip on a rod that extends down from the fill valve. Pinch the clip and lower to lower the float. There's a plastic screw for minute adjustment. If you have a ballcock, there's a screw at the top that you'll need to loosen to lower the arm.

Jul 04, 2009 | Toto Home

1 Answer

Keeps on runing


Either the flush valve needs to be adjusted so that the float is below the overflow tube, or your flapper is not sealing or getting stuck. The fill valve either has a float or a ballcock. On a ballcock there is a screw at the top of the fill valve that will lower the arm of the ballcock. On a float, a small clip connects to a rod next to the float, pinch and pull down to lower the float. There is a plastic screw at the very top for fine tuning.

Jun 29, 2009 | Toto Home

1 Answer

Toto toilet Power Gravity intermittently running


I suggest that you replace the cap with the new seal, it sounds as tho the valve is not shutting off and the bowl fill tube continues to run. Have you adjusted the water level to 3/4 of an inch below the overflow tube. If not, try that.

Mar 16, 2009 | Toto Promenade, 1.6 GPF, Elongated...

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