Originally Posted by IFIXH20
Just a add-on to what John has said ,besides the fill valve refill tube you should check the seal on the flush valve. Those seals get small water bubbles on the seal itself ( water gets in small holes on the top or bottom sides of the seal creating the bubbles) causing the seal to not seat flush allowing water to seek out the tank. I recommend removing the chlorine puck out the tank as well , the chlorine shorten the life of the tank inner parts.
Thank you for the post. As you suggested I believe the flush valve seal is the culprit. I did pick one up and just put it on this morning. The old one was deteriorated pretty bad I don't understand how it wasn't leaking worse by the looks of it. (Which by the way I also removed the chlorine attachment as I suspect that was the reason for most the deterioration). Now to my next problem/question: How do you get the new seal to seat?
After taking the old one off and cleaning where it sits I installed the new one by pushing it all the way down over all the threads. When I tried flushing it is leaking worse now. I took it back off and tried just putting seal over top of the lip so it kind of rested "above" the threads. This worked better but it still leaks. I checked the bottom of the flush valve itself and it appears to be fine (no cracks, smooth on the bottom where it seals, etc). I took a straight screwdriver and ran around the bottom so it appears the seal sits flush and tried it a third time............same thing. Any ideas what I am doing wrong? I double checked and the seal is the correct one for Mansfield. Thanks again for any suggestions.