Disconnect Fuel Line Coupler
WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2001 Mazda Tribute, 2001 Mazda Protege, 2001 Mazda Millenia, 2001 Mazda MX-5 Miata, and 2001 Mazda MPV. However, it is still accessible from the selected car via links, so may be relevant.
Push apart lock clip and unlock. On blue locking coupler, lift tab and disconnect fuel line. See Fig 1. On orange locking coupler, rotating coupler until it stops releases fuel line.