How do you change a timing belt on a 1990 Ford Festiva?

To change the timing belt on a 1990 Ford Festiva, first, disconnect the battery and remove any components obstructing access to the timing belt cover. Align the timing marks on the crankshaft and camshaft to ensure correct positioning, then remove the old belt along with the tensioner. Install the new timing belt, ensuring proper tension and alignment with the timing marks, and reassemble the components in reverse order. Finally, reconnect the battery and start the engine to verify that everything is functioning correctly.