Can't see how to remove K-4504 tank flush valve to replace it.

Your rubber flush valve has likely deteriorated and does not seal the tank anymore, allowing water to escape. This is an easy fix, depending on the model of you tank.

Shut off water to the tank. Open tank and remove flush valve. See picture for what you need to remove.
Go to your local hardware store and get a replacement.

To replace the ballcock (flush valve):

1. turn off water valve at wall
2. flush2 times
3. disconnect line from bottom of tank
4. unscrew nut where line enters tank bottom
5. remove lift device (Chain) from stopper at bottom inside tank
6. lift the ballcock up and out of tank.
7. replace withnew
8. reverse to install.

mike

Drain the tank (turn off the water supply and hold the flush valve open with your hand).

Remove the old flush valve. Replace it with a new one. Turn the water supply back on.

The arm controls the Flush Valve. Inside the flush valve is a black rubber "seal" that closes the end of the fill pipe and stops the water. If a piece of sand, grit, or small rock gets imbedded in the seal it will allow water to pass through even when the tank is full. Either you take apart the flush valve and remove the grit, or you replace the whole valve. Sometimes even when the grit is removed the rubber seal is damaged and must be replaced. A new valve, and some of these replacement seals can be purchased at a good hardware or plumbing supply store. Use the valve handle, below the tank, on the pipe that comes through the wall, to turn off the water before replacing the seal or valve.

Flapper or flush valve needs servicing
First try cleaning minderal deposits from around the valve seat. This can keep the flapper valve from sealing properly and allow water to seap into the bowl. First turn of the water and flush the toilet to empty the bowl. You can unhook the flapper valve to get it out of the way. Using emery cloth scrub the inside of the valve seat to remove the mineral deposits. Next coat the valve seat with petroleum jelly to help the flapper valve make a tight seal. Replace the flapper valve, turn on the water and check to see if the water still leaks.
If the flapper valve is old it may be deformed. In this case you will need to replace it. You can unhook the valve and remove the lift chain from the valve. Be sure to purchase a similar size replacement valve.
If the valve seat is damaged you will need to replace the entire flush-valve assembly. You will need to remove the tank to do this. Be certain to turn off the water supply and flush the tank to drain it. You might also want to place newspaper and towels on the floor to soak up any water that may leak out. Using and adjustable wrench loosen the nuts at the supply tube and push the tube aside. Next, use a flat-head screwdriver to hold the bolts inside the tank still while using an adjustable wrench to loosen the nut on the bottom of the tank. You will then be able to lift the tank off of the bowl. Lay the tank on the newspapers or towels.
To replace the flush-valve assembly first remove the old one by unscrewing the locknut on the bottom of the tank. Use a hacksaw to cut the new overflow pipe to 1/2 ince below the tank top. Put plumber's putty on the washer at the base of the flush-valve assembly and push the assembly against the tank opening, removing any excess putty. Use a monkey wrench to tighten the locknut. Replace the gasket over the locknut and replace the tank on the bowl and reassemble them.
g and adjustable wrench loosen the nuts at the supply tube and push the tube aside. Next, use a flat-head screwdriver to hold the bolts inside the tank still while using an adjustable wrench to loosen the nut on the bottom of the tank. You will then be able to lift the tank off of the bowl. Lay the tank on the newspapers or towels.
To replace the flush-valve assembly first remove the old one by unscrewing the locknut on the bottom of the tank. Use a hacksaw to cut the new overflow pipe to 1/2 ince below the tank top. Put plumber's putty on the washer at the base of the flush-valve assembly and push the assembly against the tank opening, removing any excess putty. Use a monkey wrench to tighten the locknut. Replace the gasket over the locknut and replace the tank on the bowl and reassemble them.

You need to replace the flush valve gasket. It comes in a flush valve kit, it's a rubber gasket that goes between the tank and the bowl. You just pull the tank off and it's on the under side of it. Be careful the black stuff on the gasket doesn't come off your hands. Make sure you get the new one on there even and all the way on. This will fix your problem. Good Luck

Tool Belt Diva
www.toolbelt-diva.com

It's the Flapper or Flush Valve. Get some green or red food coloring and a flashlight. First remove the tank lid and lift the seat and cover up against the tank. Take your flashlight and shine it on the back of the bowl, where the water line is. if you can see water coming down the back side of the bowl and disturbing the calm water ie. making ripples. ( be patient and watch carfully). If you can see the water being disturbed most likely its the Flapper. Now take your flashlight and point it down into the flush valve fill tube. That's the thing that looks like a pipe standing up in the center of the toilet tank coming out of the water about an inch or so. Look for water very slowly pouring into this tube from the inner walls.look from the top all the way to the bottom of the tube. If you see water leaking into the tube you need to replace your "Flush Valve". That's another post... If not, then most likely it's the "Flapper" put the seat back down and sit on it facing the tank. Reach into the tank and lift the flapper up and feel with your fingertip the flapper seat by circling the seat. Like you would a glass rim to make a tone with it. If you feel a nick anywhere on the seat you will need to repair the flush valve flapper seat. If not then you need a replacement flapper. If you cant see/find any of the leak problems as mentioned above then it's time to use the food coloring. Add it to the water in the tank. DO NOT FLUSH ! Let the dye mix with the water and then start to inspect the areas as mentioned above. ( Back of bowl/water line and the fill tube in center of tank). Use the flashlight to find the colored water in the areas as mentioned. Before making any repairs turn the water off to the toilet. PARTS: FLUSH VALVE REPLACEMENT If you need to replace the flapper seat flush valve. Because you found a nick in the seat rim, FLUID MASTER makes a great repair kit for that. Follow their instructions. Hint: Make sure the existing seat is dry before installing the fluidmaster repair kit. Also you get one shot at it. The adhesive is strong you wont be able to pull it back off once you install it. FLAPPER REPLACEMENT Take your old one with you to Lowes/Home Depot and match it up. Hint: Once you put the flapper on, take out most of the slack in the flapper chain when you connect it to the flush handle. once you're happy with testing the dry flush cut the remainder of the chain off with **** ( wire cutters). If the problem is a cracked overflow tube you'll need to replace the flushvalve assembly. If so you may email me at [email protected] and we'll go over that prosess on the phone if you'd like. I hope this helps. Good luck, Mike. ps. Don't forget to click on the hyperlink above for a cut away view of the toilet tank.

If you have a supply shut off to fixture shut it off and disconnect supply line from inlet to toilet . If your supply line to toilet is a flexible line then bend it so that you can direct water to small container. Slowly turn valve on to see what flow rate is at that point. If flow rate is not good then I would shut water off to house and replace valve. If flow rate to toliet is good I would reccomend you replace flush vallve. To do this shut off water supply to toilet. Disconnect supply nut to bottom of flush valve. There will be a retaining nut that holds flush valve in place in toilet tank. Remove flush valve after removing fill tube from flush valve to overflow tube. Replace with toto replacement valve or use Fluidmaster 400A. Instructions on box of 400A are easy to follow and if you have flex connector you won't need supply line washer. I would reccomend that before you install new valve that you put rubber gasket on shank of valve and slid it about halfway up the shaft. Make sure that inside of tank is dry and use a small bead of silicon caulking on top and bottom side of shaft gasket. slid gasket the rest of the way on valve shank,install in tank and put on retaing nut hand tight. Push down on top of valve and using channel lock pliers finish tightening nut securely.You may need to reach into tank and grasp valve body to stop it from turning. There are other things you can do if you have a working supply valve. Shut off valve and remove screws that hold top of valve in place and remove and clean surfaces. You can turn valve on slowly to help flush out any rust or mineral deposits. I hope this is of some help to you. Thanks