Replacing flush valve or cable in consealed unit.

Flush on toilet keeps sticking. The button stays in and may sometimes pop out on its on but when stuck in a constant trickle of water is happening. When I take cable off from push button the cable stays in the flushed position so something is not releasing it.

I'm struggling to find access to remove and replace in concealed unit. The top can not be removed as the screws are hidden by the cistern.. Will this be a case of removing the bottom portion of unit, turning water off and completely removing cistern?

Any advice appreciated. Thanks

Undo the cam fixings under the top, then the top should be able to be lifted off.

Andy

Thanks. That was the problem. I was unable to access one cam fi mixing was in the way but luckily I noticed the fitters hadn't screwed it fixed themselves so it did just lift off.