Hey there,
I have a Fluidmaster 400A in my toilet tank. I am not sure why but my toilet tank will not fill up with water, even when the water is running. I am unsure what to do as I have never done this type of stuff before.
I have removed the cap of the fluidmaster and don't really know what to do after. Any help is REALLY APPRECIATED.

Thanks for your time and help!

Hey there,
I have a Fluidmaster 400A in my toilet tank. I am not sure why but my toilet tank will not fill up with water, even when the water is running. I am unsure what to do as I have never done this type of stuff before.
I have removed the cap of the fluidmaster and don't really know what to do after. Any help is REALLY APPRECIATED.

Thanks for your time and help!
More details please! Does the tank just not fill up to the tank level or doesn't the ballcock let any water in at all? Back to you, Tom