How to replace 2007 Honda Ridgeline serpentine belt?

To replace the serpentine belt on a 2007 Honda Ridgeline, first, ensure the engine is off and cool. Locate the serpentine belt routing diagram, usually found on a sticker under the hood or in the owner's manual. Use a wrench to rotate the tensioner pulley counterclockwise to relieve tension on the belt, then slide the old belt off the pulleys. Install the new belt following the routing diagram, ensuring it's seated properly on all pulleys, and finally, release the tensioner to apply tension to the new belt.