If it's like mine (plastic buttons and plate) the way to take the button front plate off is to push up on the lower edge of the faceplate to disengage the catches holding it on at the top. You can then lift the plate away at the top edge which enables you to free the catches at the bottom by lowering it down a little. Reverse procedure to replace. Sorry if yours is different to this.......
JB, September 2008
On the Roca dual flush it is not possible to unscrew the outer metal ring - I tried this morning. I have been checking the net and someone else advises that you depress the smaller button and lever out the larger one with a small screwdriver. I'm going to try doing this tonight.
Steve, September 2008
hi,i have an ideal dual flush cistern.to remove the lid you prise the two silver buttons out with a screwdriver(easy to do)and underneath there is a plastic screw.undo this and the lid will lift off.hope this is useful
steve tucker, September 2008
the push button screws anticlockwise and this will let you take the lid of
irish dave, September 2008
Unscrew the metal ring around the push button and then pull out complete with the push button itself. This needs a little extra force so don't worry just pull straight up.
TT, September 2008
edit
I can answer this question...
How do i take the lid off my Roca push button toilet?
