1968 20hp
A 200 hp Johnson outboard, model number J200STLCDR is a 1986 year model.
A Johnson outboard, model number CD24D is a 1967 model, 6 hp engine.
1986
Johnson model number J70ELCSA, is a 1980 year model, 70 hp outboard.
A Johnson outboard engine, model number RDE19M, would be a 1957 year model, 35 hp outboard.
1965
A Johnson outboard, model number 85TL79R would be a 1979 model, 85 hp.
Model number 65ESL73R would be a 1973 model, 65 hp Johnson outboard.
1990
The year model for a Johnson outboard is determined by the "model" number, rather than the serial number.
Johnson and Evinrude outboard motors use the engine "model" number to determine the year model.
The year model of a Johnson outboard engine is determined by "model number" rather than the serial number.