My toilet is fitted with an Opella Dual Flush Valve


http://www.diy.com/diy/jsp/bq/nav.js...Search=fals e

http://tinyurl.com/6cepqrx



I have no instructions with it.

The toilet has stopped working - in that if I hold in the press button it will
totally empty the tank. But if I let go the tank only half empties - ie the
valve drops down before the tank is emptied. I am guessing that the grey unit
on the red screwed rod is something to do with the problem - as it appears at
the moment to be serving no purpose.

Can anyone tell me what purpose the adjustable red screwed rod (rhs of unit in
diagram) and the grey unit it carries serves,

I have looked on Opella site but cannot find any info regarding this particular
flush valve. Does anyone have a copy of such a thing

Art