How do I do this - need to do it because existing ballcock is covered in limescale and toilet flushing very slowly

how do I do this - need to do it because existing ballcock is covered in limescale and toilet flushing very slowly
Changing your ballcock will not solve your flushing problem. Let's g et this over with one post. Describe how the toilet flushes and I'll instruct you on changing the ballcock along with solving the flush problem. Regards, toim

Had another look and - incoming water into the cistern is coming in slowly - not usually like this

Describe your ball cock. Float ball on a rod or a can on a wire.

It is a ball with a rod - lots of limescale in the cistern too

When ballcock is filling the toilet the water is running straight through down out of the toilet rim

Float ball

Float ball

When ballcock is filling the toilet the water is running straight through down out of the toilet rim

Float ball

You need to pull handle fast three to four times but not working since water coming out of rim of toilet when ball cock is filling up

Hi bathing and welcome to the Plumbing pageat at AskMeHelpDesk.com. You piggybacked on an a 4 year old dead thread. In the future, before you post, look in the upper left hand corner for the date.
We thank you for your input. Please feel free to post answers or to ask questions. Regards, Tom