Well dear!
Take a half inch ratchet and use it. Now you will place the stub on ratchet into slot. The slot will be located on idler pulley. Now push down to relieve tension on belt for replacement purpose. Now you can replace belt and then push down on ratchet to reload the new one.
Replace The Serpentine Belt
Take a half inch ratchet and use it. Now you will place the stub on ratchet into slot. The slot will be located on idler pulley. Now push down to relieve tension on belt for replacement purpose. Now you can replace belt and then push down on ratchet to reload the new one.
Replace The Serpentine Belt