How do you Replace valve cover gasket for 97 mercury sable?

To replace the valve cover gasket on a 1997 Mercury Sable, first disconnect the negative battery terminal and remove any components obstructing access to the valve covers, such as the air intake or electrical connectors. Then, unbolt the valve cover using a socket wrench, carefully lift it off, and clean the mating surface. Replace the old gasket with a new one, reassemble the valve cover, and torque the bolts to the manufacturer’s specifications. Finally, reconnect any removed components and the battery terminal.