How do you replace the water pump on a Mazda 323 1.6 dual overhead?

To replace the water pump on a Mazda 323 1.6 DOHC, first, drain the coolant and remove the drive belt. Next, detach the timing belt cover and remove the timing belt to access the water pump. Unbolt the old water pump from the engine and clean the mounting surface before installing the new pump with a new gasket. Finally, reassemble the timing belt, cover, and drive belt, refill the cooling system with coolant, and check for leaks.