take off lid, grab the syphon half way down and twist anti clockwise. Remove top part of syphon, the rubber at the bottom will be either damaged or gunged up, replace and or clean and replace which should cure the problem
rawplumb
March 2010
I can answer this question...
how can I stop a Macdee hydraulic toilet water cistern from running after f?
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix toilets.