How do you replace the alternator belt on a 1991 Mazda MX-6?

To replace the alternator belt on a 1991 Mazda MX-6, first, disconnect the negative battery terminal to ensure safety. Loosen the alternator mounting bolts and the tensioner bolt to relieve tension on the belt. Remove the old belt and install the new one, ensuring it is properly aligned on the pulleys. Finally, adjust the tension by repositioning the alternator, tighten the bolts, and reconnect the battery terminal.