1954 K&O Evinrude Big Twin Variants
1954 Evinrude 25HP Big Twin: Gen 1
1954 Evinrude - Gen 1 - Starboard: "Made in Japan", "notch" in midsection, prop-lash screw in front of prop housing in lower unit
1954 Evinrude - Gen 1 - Port: Black "Evinrude" logo with no gold outline, "notch" in midsection, hole in transom shaft collar, prop-lash screw in front of prop housing in lower unit
1954 Evinrude - Gen 1 - front: Prop-lash screw in front of prop housing in lower unit
1954 Evinrude 25HP Big Twin: Gen 2
1954 Evinrude - Gen 2 - Starboard: "Japan", no notch in midsection, prop-lash screw in front of prop housing in lower unit
1954 Evinrude - Gen 2 - Port: Black "Evinrude" logo with no gold outline, no notch in midsection, hole in transom shaft collar, prop-lash screw in front of prop housing in lower unit
1954 Evinrude - Gen 2 - front: Prop-lash screw in front of prop housing in lower unit
1954 Evinrude 25HP Big Twin: Gen 3
1954 Evinrude - Gen 3 - Starboard: "Japan", no notch in midsection, prop-lash screw in front of prop housing in lower unit
1954 Evinrude - Gen 3 - Port: Black "Evinrude" logo with gold outline, no notch in midsection, no hole in transom shaft collar, prop-lash screw in front of prop housing in lower unit
1954 Evinrude - Gen 3 - front: Prop-lash screw in front of prop housing in lower unit
1954 Evinrude 25HP Big Twin: Gen 4
1954 Evinrude - Gen 4 - Starboard: "Japan", no notch in midsection, no prop-lash screw in front of prop housing in lower unit
1954 Evinrude - Gen 4 - Port: Black "Evinrude" logo with gold outline, no notch in midsection, no hole in transom shaft collar, no prop-lash screw in front of prop housing in lower unit
1954 Evinrude - Gen 4 - front: No prop-lash screw in front of prop housing in lower unit