Fix a Running Toilet...Fill Valve Replacement -- by Home Repair Tutor

In this video we share how to fix a running toilet by replacing the fill valve. We used FluidMaster's 400H which has adjustment levers for both the tank and bowl water levels.

Supplies we used for this project

Scissors
Sponge
Bucket
Pencil

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The first step is to turn the water off at the shut off valve. If the shut off valve is broken turn the water off at the home's main valve.

Then flush the toilet and hold the lever down until most of the water drains from the tank. Use a sponge to remove the rest of the water.

Unscrew the water supply line from the old fill valve, use Channellock pliers if necessary. Remove the old fill valve and dry fit the 400H.

The top of the Fluidmaster 400H should be roughly 3" from the top of the flush valve. In addition, the top of the flush valve should be 1" below the tank lever location.

Adjust the 400H height by turning the black column clockwise or counterclockwise. Then cut the hose to the right length so that it doesn't catch on top of the toilet tank lid. Insert the hose into the clamp and attach it to the flush valve.

Secure the 400H to the bottom of the toilet tank using the provided nut, just hand tighten it. And hand tighten the water supply line to the bottom of the 400H. Turn on the water at the shut off valve and check for leaks.

Watch our video to see how to adjust the water in the tank and toilet bowl

For more videos on Fluidmaster products check out their YouTube Channel

[johnnybanton]

Thank you fixed my toilet today for $15. 1 tip, not necessarily "instead of measuring", but when I took the old one off, I just made the new valve the same size by lining up the fill valves next to each other and then unscrewing until the same length.😂😂😂 Thank You Again!

[jecof]

61 y/o woman just changed a fill valve thanks to your video. All I've ever done with a toilet is use it, clean it or plunge it. Your detailed and to the point video gave me the confidence to feel I could do it. Thank you for saving me money because my other option was to call a plumber to change out a $14 part.😘

[markwalker]

The amount of things I didn't know before being homeowner. Thank you to your channel and other like that help with small jobs.
These are things I need to teach my kids so they know what to do when they own a home

[alexandralee]

The most helpful and detailed ...step by step video that I've found. Thorough and detailed, while being able to see the process, up close ..POV and that makes it so much more helpful than other videos I've seen.

[patinpatin]

Thank you! You saved me hundreds of dollars. A plumber was going to charge me $50 to come look at my toilet and up to $300 for parts and labor. I spent $13 dollars on the project and I did it in 10 minutes.

[Luvermont]

Hey, thanks so much for this video. Hubby just bought this brand of fill valve and it gave him confidence that he knew what he was doing. Videos like yours make YouTube and the internet worth their weight in gold. Thanks again.

[davidgeveke]

Watched two videos and this one was the best. A+ for saying it would take between 10 and 15 minutes because that’s exactly what it took this novice to replace the float valve!

[SnafuFourTwo]

Simple, straightforward, no use of terms that a average person wouldn’t know, start to finish of whole process; this video not only helped me replace that for my toilet, but genuinely pleased me with how well made it was.

You my friend are a shining example of how all “how-to” and DIY videos should be made! Keep up the great work!

[luckygurl]

Thank you for the upload. I installed one today and I feel so empowered I was able to do this instead of calling a plumber!

[milliesutton]

Water was shooting from the top of my original fill valve. I had to be replace it. I was able to easily replace my damaged fill valve with the same product used in your video and thanks to your steps.
Thank you.

[miab]

I'm a new homeowner and this video just saved me so much money by not having to go through a plumber. Thank you thank you!!

[cccentertainment]

Watched your video and followed it step by step, fixed my toilet in 5 mins for a total of 14.95 + tax for parts. Thank you very much! Saved me the cost of a plumber. I'm a new subscriber!

[blueboots-san]

I'm a new homeowner and this was extremely helpful! Took me ten minutes. Thank you, I appreciate it!

[benpholmes]

Awesome! I never would've had the confidence to fix this myself except for the assurance shown in this video. For $10 I was able to replace the fill valve without calling a plumber, and it was surprisingly easy. Thanks!

[samuelbrass]

I replaced my flapper earlier, thinking that would solve the running toilet. It did not solve it. That job was already pushing the limits of what I'm confident doing. But despite that, I went ahead and replaced the fill valve using this video. Problem solved, confidence restored. Thank you!

[nickwilder]

Saved lots of money by following your video. Your instructions matched those in the product. Yet seeing it is better than looking at the pictures in the instructions.

[rjward]

Thanks, HRT! Just replaced my fill valve and it was a snap. Water bill should return now to normal level.

[debvorawoods]

OMG! You're amazing. I've never done any type of plumbing work in my life and I just nailed this. Thank you!

[rhondajourneay]

Just finished swapping out my fill valve and it worked perfectly! So proud of myself for taking it on and actually getting it done properly 😁 I never would have tried it without this video so thank you!!

[gchard]

Thank you. Completed fill valve, flapper valve and flush arm for under $40!