I have, in my bathroom, a WC. The separate cistern is just above the throne. Cistern, handle, and throne are as installed while the property was under construction, and so should match.

The inner workings of the cistern - of the usual sort, I suppose - were professionally installed as replacements about a decade ago, approximately; I have no "user and/or maintenance manual".

I understand how the siphon currently works. There is a translucent plastic bung by the top of the blue lifter chamber, near the top; I understand that will inhibit a much-reduced flush if the handle is not kept depressed. There are two yellow plastic apparent-bungs, one above the other, in the side of the lifter chamber; I can only suppose that removing either of these diminishes the size of the full flush.

At the front of a blue protrusion on the side of the blue riser from the lifter chamber, there is a yellow sort-of-knob which can be turned; it is evidently part of a spindle which goes through the blue protrusion, and the other end of the spindle, which is slotted, can be seen protruding at the back. Might that be a flush-throttle?

Comments welcome.

There's very little on WCs in the UK d-i-y Wiki, as far as I can see. The Web has a lot; but mostly about foreign systems AFAICS.


I'm not at all sure what "The usual sort" of cistern innards are,
several designs have replaced the traditional ball-cock and siphon.

A picture is worth a thousand words.


--
Graham.

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