How do you replace the valve cover gaskets on a 2001 Mazda Millenia 2.5 L?

To replace the valve cover gaskets on a 2001 Mazda Millenia 2.5L, first ensure the engine is cool and disconnect the battery. Remove any components obstructing access to the valve covers, such as the intake manifold or coil packs. Unscrew the valve cover bolts and carefully lift off the covers, then remove the old gaskets. Clean the surfaces thoroughly, place the new gaskets in position, and reassemble everything by reversing the disassembly steps, ensuring proper torque specifications for the bolts.