So the flush died on our loo and either the diaphragm in the syphon or the whole syphon had to be replaced. The question I ask myself, after effecting the repair, is why do you have to remove the cistern, disconnect the inlet, overflow and pan connection just to find out what the issue is. I presume that plug-and-play fittings for plumbing do not keep the plumbing trade humming even if they would make life a whole lot easier for the rest of us.
Now the couplings are leaking so herself has been sent to get replacements whilst she is in town. Joy, the whole lot will have to come apart again.

