hello and welcome to Corky toilet repair today we are going to install your Corky plus adjustable flapper the first step is to shut off the water supply to your toilet next flush your toilet mark the water level in the tank with a pencil and drain the excess water remove the old flapper install the korky plus adjustable flapper attach the flapper ears to the tabs of the flush valve attach the flapper chain to the flush lever with minimal slack turn the water supply on and wait for the tank to fill completely turn the water supply off and flush if the water drops within a half inch of the pencil mark your installation is finished if not you will need to adjust the float if your water level is below the pencil mark move the float up if your water level is above the pencil mark move the float down turn the water supply on and wait for the tank to fill completely turn the water supply off and flush repeat this process until the water level drops within a half inch of the pencil mark congratulations you have successfully installed your Corky plus adjustable flapper thank you for choosing Corky if you have any questions or need further assistance with your installation please visit our website or call us at one eight hundred five two eight three five five three you