My fairly ancient cistern seems to have failed -
it only flushes when the water level is dangerously high.
This is a low-leve cistern, sitting on the toilet bowl.

I was wondering if there are any clever units now
which one can use as replacements?
(I don't really want to replace the whole unit.)

I'm thinking of something that has 2 (or more)
levels of flushing, to save water.

Also, can anyone point to simple d-i-y instructions
for replacing the inside unit?

--
Timothy Murphy
e-mail (80k only): tim /at/ birdsnest.maths.tcd.ie
tel: +353-86-2336090, +353-1-2842366
s-mail: School of Mathematics, Trinity College, Dublin 2, Ireland