Tools and materials:
A good long pair of rubber gloves.
Old clothes.
2mtrs of strong twine.
A length of Wood around 300 mm long.
A small Container.
A plastic Bucket.
Old cloths.
A large adjustable wrench.

Method.

First fill a bucket with water. Then, remove the heavy lid from the top of the cistern and put it somewhere safe. Reach into the cistern and lift the float. Bridge the top of the tank with the word and tie the float arm up so that the water stops running. Feltham Plumbers can carry out emergency repairs. Use the ball to build a water out of the Tyler pan. With the unit more or less empty, take the wrench and undo the last casting doubt on the underside of the unit. Move the outlet pipe to one side. Depending on your model, undo the not clamps, disconnect the wire that links the flushing lever to the top of the siphon, and then lift the whole site unclear of the tank. It is at this point that you have a choice, you can either replace the whole site and unit, or you can remove the pierced plastic plate from the underside of the siphon, and remove and replace the plastic flap valve. Whichever you choose to do it is a very simple and straightforward operation. Finally, when you have fitted a new flap valve, or purchase a whole new unit, you simply reverse all the fitting procedures as already described, and the job is finally complete.

Note: the trick with this particular job is to make sure that you thoroughly clean and dry all of the washers, Nuts, and surfaces prior to refitting. A Feltham Plumber is a skilled tradesman who can repair all kinds of plumbing problems.
“