This inexpensive plastic wrench was the perfect tool to get the old Flush Valve off easily! This is a do-it-yourself project with the parts from ChicagoFaucetShoppe.com. Save the expensive Plumber charge by doing it yourself!

Chicago Faucet Shoppe was probably unaware that a wrench came with the American Standard - 738109-0070A flush valve kit. This wrench was the one I used, the one that came with the kit was not very strong. In retrospect, I was glad I bought it.