How do you replace water pump on a 2000 mercury mystique?

To replace the water pump on a 2000 Mercury Mystique, first disconnect the negative battery cable and drain the coolant. Remove the serpentine belt and detach any components obstructing access to the water pump, such as the timing cover or other belts. Unscrew the water pump mounting bolts, remove the old pump, clean the mounting surface, and install the new pump with a new gasket. Finally, reassemble all components, refill the coolant, and reconnect the battery.