Anyone have a link to a write up on how to change a serpentine belt for a 2007 mazda 3 2.0? It looks like the AC belt or some other type of belt has to come off as well.

 

yeah when replacing the serp belt the a/c belt has to come off, in the manual i have they say to cut the a/c belt and dont give any directions on which way the serp belt is layed on the pulleys. When i changed my serp belt my a/c belt was already gone and i made a mental note on how the serp belt wrapped around the pulleys, maybe if you draw something on paper it could help you