Unplug the refrigerator from the power source, and move the unit away from the wall if necessary to provide enough room to access the back.
Close the water line valve that supplies water to the refrigerator.
Disconnect the water supply line that connects the refrigerator to the household water line, using a wrench.
Place a 3-qt. or larger capacity pan behind the refrigerator, next to the water solenoid valve.
Disconnect the water tank inlet line at the water solenoid valve, using a wrench. Place the water tank inlet line into the pan to catch the water that will drain from the line when it's completely removed.
Reconnect the water tank inlet line to the water solenoid valve, using a wrench, when all the water is drained from the line.
Open the refrigerator door. Grasp one crisper drawer by its handle with both hands, and pull straight back to remove it from the support slots holding the drawer in place. Repeat with the other crisper drawer.
Pull straight back on the water tank to access the water tubes.
Cut the water tubes off within 1 inch of the tank, using a utility knife.