Originally Posted by
HillRider
Most of these pictures show Shimano's 600 old clip and strap pedals that have no cleat retaining mechanism at all. The photo at the right seems to show a plastic Look-type cleat bolted directly to the pedal but what it does is a mystery since the pedals have no retaining/release mechanism for it.
Look closer. At the end of the pedal, where the three screws are, is the piece that retains the cleat. It doesn't lock, but the cleat stays tight unless you pull your foot back. Or you can put your foot in so that the cleat is over that piece and loosely close the clips - so you could use a running shoe or whatever, or use a 600 cleated shoe, which I usually did.