The half flush button on my toilet is not working. The full flush button is.
I took out the cylinder [?: sorry, I know nothing about toilets]: when I depress the full flush button all seems to work well; if I press the half flush button a component pops out. See a video: I depress the full flush 3 times, then the half flush. https://photos.app.goo.gl/bmRf3BnHmutHJKYRA
Does the whole cylinder need to be replaced? Or one component? It looks a bit fiddly to ignorant me.
Thanks for your time/help,
Ian.