i have a 15hp johnson with that same model number and it is a 1992
A Johnson outboard, model number CD-15, would be a 5.5 hp from 1958.
Model number 15R745, would be a 1974 year model Johnson outboard.
1988
The dry weight for a 1985 model, 15 hp Johnson outboard is 72 - 82 lbs depending on the particular model.
The year model for Johnson and Evinrude outboards is determined by the "model" number, rather than the serial number.
That is a 15 horsepower from 1977
The dry weight of a 1984 model, 15 hp Johnson outboard is listed at 78 lbs.
Your 15 hp Johnson is a 1982 year model.
I don't even think there is a model 15 is their?
The dry weight of a 1998 model, 15 hp Johnson outboard is 74 - 114 lbs, depending on the particular model in question.
Johnson 15 hp built in 1987