either
the fill valve is running and water is draining into the bowl via
the overflow tube in the tank or the flapper is bad (or foreign matter)
and it is allowing water to escape into the bowl through the flush valve slowly...causing the
tank to drain and the fill valve to run every few minutes or so. start by inspecting/cleaning or replacing the flapper and hopefully that will do it because a one piece toilet flush valve
needs a special wrench,to remove it, that you use with a ratchet. If you buy a new
flush valve, it comes with the wrench (glorified piece of plastic) and
is not too difficult to get the flush valve out. you can get a replacement at http://www.plumbingpartsdepot.com/ They do mail order, too. All you need is the
toilet type - a four digit number embossed in the tank starting with a
2. hope this helps but if you need anything else just ask:)
https://www.youtube.com/watch?v=FlJ3UQlkEdU
First you will need to obtain the kit or parts necessary for replacement, compare your parts to your existing before doing anything, you will need your model number and if you had a picture more help could be offered. Begin by turning off the water supply to the toilet, keep a small bucket handy to catch the water, disconnect the supply line at the toilet if your are doing a complete replacement. If its only the handle again a handle kit will need to be obtained for your specific model no need to turn off water but keep in mind your exact handle or button placement. When you have the correct parts its just a matter of remove and replace and take photos of before so you can reference what goes where if you get sidetracked.
if you flush and the water continues to run into the bowl the it is the flush washer that needs repalcing
If that water shuts off and the cistern fills and then continues so that it flows down the over flow pipe into the bowl the it is the water inlet control washer that needs replacing
Typically there is no serial number associated with a toilet seat. The seat will either be a round front or an elongated seat. Just make sure the shape is the same when purchasing the replacement seat.
The piston sits inside the upper valve housing. The upper valve housing comes off by twisting the upper housing counter-clockwise. When you lift the valve housing out of the tank you will see the flush piston extruding from the bottom of the housing. The flush piston can be pulled out of the housing.. Yes, it just pulls out. And you just push the new piston in place.. Secure the valve assembly back into the tank by rotating the housing clock-wise.. Some Veneto toilets have two clips on the housing which secure the housing in place.
Open the tank on the inside of the tank you will see where the lever enters the tank. .. there is a plastic washer and nut....loosen and remove. Take with you to the hardware store and get the new lever that matches the old
You don't need to just undo the two nuts under the bolts in the tank. there is a rubber seal between the tnk and bowl and the whole thing will just lift up
A few things to check look in the tank make sure nothing is blocking the flapper at the bottom thats the thing that lets the water drain into the bowl if it is clear check make sure the chain or line that connects the flush handle to the flapper is not kinked causing it to hold the flap up enough to let the water drain. If these are ok sometimes sediments will make the float device, whether its a ball or a canister type to stick reach in and lift the floater if the water stops then adjust the floater some have a screw on the canisters to adjust some an arm some the whole mechanism shaft screws up and down to adjust if its the ball hold the metal arm firm next to the base and bend it slightly down on the other end so the ball goes further into the water so when you release it lifts it up better don't bend to much check and bend more if you need to. If its a ball make sure water is not getting into it by feeling if so replace it. If none of these work you can replace the whole thing for around $20 just turn the water off flush the tank get all the excess water out and go to town its not hard make sure you have pipe tape and if you don't know about the tape ask the hardware dealer to explain how it goes on just a couple wraps. The hardware store can help you pick the one you need tell them what yours looks like and they can help find a replacement.
Hello:
Please feel free to call Customer Service
1-800-359-3261
General Customer Service Monday through Friday 8:00 A.M. to 7:30 P.M. EST
Technical Customer Service Monday through Friday 8:00 A.M. to 6:00 P.M. EST 8:00 A.M. to 3:00 P.M. EST
Customer Care at Porcher
Porcher Customer Care P.O. Box 6820 1 Centennial Plaza Piscataway, NJ 08855-6820