How to Fix a Running Toilet with Fluidmaster 400H Fill Valve from Home Repair Tutor

Hi I'm Jeff Patterson with Home Repair
Tutor and today I'm going to share with you how to fix a running toilet by
using Fluidmaster's 400H fill valve. The 400H replaces a variety of different
fill valves which you can see on the side of the box. Again this is the 400H
-002. When you open the box there are only a few items in there it's just the fill
valve, the instructions and in some additional parts which we're going to
show you how to use a little bit later in the video. These 400 series fill
valves have been around since the 1950s so they've been around for a long time.
First step is to turn the water off of the shut-off valve. The next step is to
flush the toilet and to remove the toilet tank to see how much water is
left in there. Pull down on the lever of the toilet tank until most of the water
is removed from the tank and then you can use a sponge or a cloth to remove
the excess water from the tank.

This only takes a minute or two. It's super easy.
Then remove the water supply line that's connected to the old fill valve and it's
good to have a bucket for this. Remove the nut from the old fill valve and then
take off the hose and remove the fill valve from the old toilet tank. Inspect
the gasket on the new fill valve. It's usually in the right position but just
double-check that that's a case and then insert the 400H down into the tank and
dry fit that hose. That's going to be important. We need to measure the height from the top of the flush valve to the top blue cap of the fill valve that
needs to be 3 inches so that's gonna be a really important component for this

The other thing is the top of the flush valve needs to be one inch
below the tank lever location. We're gonna unscrew the fill valve, we're gonna
make it higher so that when we go to dry fit it we have the three inches
between the top of the flush valve in the top of the blue cap there. Now this
little clamp goes on top of the flush valve and we're gonna cut a rubber hose
to the right size so that it won't be interfering with the bottom of the tank
top. So again we're just putting that hose over into the slot of that little
clamp and we're just dry fitting it. Now this nut is for the new fill valve. We're
gonna put that on like so you want to make sure that this is tight because you
don't need any other tools to tighten the fill valve. Now we're going to add
the supply line to the bottom of the fill valve.

pexels photo 3964736

Again we're just gonna be hand tightening all of these parts. You shouldn't need any
type of tool. We're gonna turn the water on, we're gonna let the water rise and
see how high it goes to the top of the flush valve pipe. Now in this case
there's a little knob for both the bowl water in the toilet tank water. We want
to make sure that the water height is about 1/2 inch from the top of this pipe,
so you can make a mark on that and you can turn the little lever to adjust the
height so in this case if you're turning it clockwise you're gonna raise the
height in the toilet tank.

You just want to flush it one more time and let the
water rise back up to ensure that it's about 1/2 inch below the top of that
pipe. Now we're gonna check the water in the bowl. Make a mark on the inside of
the bowl with a pencil pencil mark should be just above the waterline, then
pour 1 gallon of water into the toilet bowl, but be careful don't do this too
quickly or it'll flush the toilet which isn't good.

So you want to pour the one
gallon of water in slowly until it fills the bowl. Now flush the toilet and see
where it refills in the bowl. If the water line is above your pencil mark,
there's too much water in the bowl. If it's below that mark, there's too little
and you can adjust the height of the water in the bowl with this blue knob
that's attached to the 400H. It should only take 10 to 15 minutes to install
this new 400H fill valve and it'll make your toilet run a lot quieter and have a
more powerful flush..

As found on YouTube

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