Push flush toilet keeps filling

[luke4321]

Hi, I have a push flush toilet with a WDI float valve.
The last couple of days it keeps on filling into the over flow, and only cuts off after about 5 minutes.
Tonight it seems to not be stopping, and I can't work out how to adjust it so it cuts off lower than the overflow.

Is this something easy to adjust or do I need to call a plumber.

Any help much appreciated!

 

[Paulplumb]

Do you have an isolator valve under the toilet. If so use a flat bladed screwdriver to turn the slotted screw in the isolated 90 degrees until the water stops.



I think the diaphram washer might have failed. These valves are available in screwfix so they may sell replacement diaphram washers

 

[wiggers]

As Paul plumb said you need to isolate but your fill valve may require replacement
If you do replace I would recommend a fluidmaster pro 45b with brass shank
Good luck

 

[luke4321]

Thanks both for the reply. I've managed to isolated it and will look into it at the weekend.

Thanks again.