How do you replace timing chain of 1999 Ford Contour?

To replace the timing chain on a 1999 Ford Contour, first ensure the engine is cool and disconnect the battery. Remove the necessary components, including the engine cover, accessory belts, and timing chain cover. Align the timing marks on the crankshaft and camshaft gears before removing the old timing chain. Install the new timing chain, ensuring proper alignment of the timing marks, and reassemble all components in reverse order, making sure to torque bolts to the manufacturer's specifications.