How do you install a serpentine belt on a 2002 Ford Focus SE?

write down how the belt is currently installed loosen the tensioner with a 15 mm socket it is the last pulley on the far bottom left you must remove the passenger wheel and splash guard to get to this pulley after you loosen the pulley pull the belt off put on the new one in the same order i go over the alternator last usually make sure the belt is on all pulleys tight and off you go it is easier to get the belt on with 2 people time .5 - 1 hour