Toilet Button not flushing

[Rick Maynard]

Hi,

Our toilet button wont flush our toilet...it has two tubes coming from it (a white and black one) which go to the mechanism inside...I can lift the mechanism inside which flushes the toilet,so that works.
Any ideas what I ned to do?

 

[rpm]

Could be the bellows becoming weak behind the buttons or even the tubes being loose on the bellows.