How do you change a alternator belt on a Mitsubishi mirage?

To change the alternator belt on a Mitsubishi Mirage, first, disconnect the negative battery terminal for safety. Loosen the tensioner pulley by turning its bolt counterclockwise, then remove the old belt from the alternator pulley. Install the new belt by routing it around the pulleys according to the belt diagram, and then adjust the tensioner to ensure proper tightness. Finally, reconnect the battery terminal and start the engine to confirm the belt operates correctly.