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How to remove a toilet
Get rid of the water.
Begin by turning off the shutoff valve on the water supply line. Then flush the toilet to remove all the water from the tank and the bowl.
Disconnect both ends of the water supply tube at the shutoff valve and at the toilet tank. You want the toilet and tank to be as dry as possible before you remove it, so go a step further and use a sponge to soak up any water that's left after you flush.