That is model 4423 and although production started in November of 1947, it was ALWAYS considered a 1948 model. It was Irgie’s pride and joy. (Finn T. Irgins – Chief engineer at Evinrude since Steve Briggs bought Lockwood in 1929) He had Evinrude rent space on the University of Pennsylvania’s ENIAC computer to design the carburetor system. The first case of CAD (Computer Aided Design) for outboards in the world. ENIAC was designed during the World War Two to break coded enemy messages and was the first US fully functional "Turing Machine". Dr. Allen Turing wrote the specifications for the programable calculator in 1936. It took over seven years to realize his dream. The first test of ENIAC was a failure. Close examination found a moth caught in one of the relays. From that comes todays expression for testing new divices as "Getting the bugs out." My thought is, to err is human, but to REALLY screw up, you need a computer …
A cutaway of that infamous induction system … Many consider it unnecessarily complicated.
Since the high speed air intake can be open to the crankcase, the motor is most safely stored with the speed control in the stop position.
