How to remove your old toilet
Before performing the task of toilet removal, make sure the water supply is shut off. The water supply tap is normally located in the line leading to the underside of the tank. If your toilet does not have such a tap, you will have to shut off the main water line in the house. Turn the tap clockwise to close. Once the water supply is shut off, flush the toilet to drain the water out. The next step is to disconnect the water supply line from the tank. You will see a nylon or brass fitting connecting the line where it enters the bottom of the tank. Using a wrench, undo the fitting turning counter clockwise. When loose you should be able to turn the fitting by hand. When the fitting is unthreaded from the tank, gently pull down on the line separating it from the bottom of the tank.