Quote:
Originally Posted by cherylncliff
It is a small rubber gasket in the top of the refill assembly. You can get them at Lowes or Home Depot. You do NOT need to replace the valve or the assembly or the "guts". It is relatively easy to replace, the hard part is getting the top of the refill assembly off to access the gasket (be sure to shut off the water supply valve first). This video should help: How to fix a toilet: replacing the Fluidmaster 400 fill valve seal (HD) - YouTube |
I watched the video. In my opinion, it's easier and better to replace the fill valve assembly. They cost 10 dollars at Home Depot. And, it comes with a new washer and plastic nut at the bottom of the tank. If that connection fails, you have a serious leak.