Pictures would help. there were more varieties of Lightfour made than any other model. It came in three different transom nights, with or without the auto rewind (Simplex) starter. Standard or 360 degree steering, standard or heavy duty lower unit (gear case). First introduced in 1934 as the Evinrude Lightfour Imperial, it was the first outboard styled with a enclosed carburetor and spark plugs. Later models were built with the fuel tank completely surrounding the flywheel. It was discontinued in 1951. If the riveted on serial number plate is missing, that number is also on a bras welch plug set in the port cylinder casting.
1934 Lightfour Imperial
1935 Lightfour Imperial on left
1939 Lightfour
1940 Lightfour
1947 Lightfour
1948 heavy duty Lightfour for 30″ transom
1949 Lightfour
Lightfour are one of my favorite models – I guess I got carried away. At one time I had seven – now only one . . . A 1941 model
