how to adjust torbeck-valve float height?

[daxu]

Hi,
My toilet is quite hard to flush properly. Sometimes I have to press the handle 3-5 times to flash.

I realized that if I put some pressure on the little white float ball (think it is a torbeck-valve) to get bit extra water in, then I always just need to press the handle once and it flash correctly.

Is it I need to adjust the valve's height or maybe this torbeck valve needs replacing? How about I add some extra weight to the float or maybe put some extra washer so the valve can be bit higher?

I attached the image(sorry, it looks really dirty in the tank), but hopefully someone can give me more ideas on how to fix it.

Many Thanks

 

[terryplumb]

your problem is the green top flush valve .the diaphragm has split.

 

[kidgreen61]

While you've got the flush valve out, bin it, and replace with a two part syphon, then next time the diaphragm splits, it'll take you less than two minutes to replace it, without having to take the cistern off.

 

[daxu]

Hi kidgreen61 and terryplumb, many thanks. I will give a try.

 

[Bosswhite]

As you are going to have to strip the cistern out, I would suggest a Flapper valve to flush the loo and a fluidmaster fill valve ( with metal thread )