#fixed1tMONEYSAVINGtips
If after carrying out the instructions in the video you discover that the fluid master inlet valve seal washer is perished or deformed in such a way to make it useable then the cheapest solution is to purchase a replacement. They are really cheap and around 10% of the cost of a new unit and could save over 30 mins and a wet floor from trying to replace the entire unit.
In my case it was the Fluidmaster 242 Replacement Seal
Check the name of your refill unit, before buying anything, if yours is not a Fluidmaster 242 then use this link to search for it.
In the United States? Use this link:
#fixed1tMONEYSAVINGtips