How do you tighten up a belt on a Z28?

To tighten the belt on a Z28, first, locate the belt tensioner, which is typically a pulley that can be rotated to relieve tension. Use a wrench or a socket to turn the tensioner in the direction indicated, usually clockwise, to create slack in the belt. Then, check the belt's routing and ensure it is properly aligned on all pulleys. Release the tensioner slowly to apply tension to the belt, ensuring it is snug but not overly tight.