I believe the Johnson Javelin name was used on some 85 and 100hp motors from around 1972 or 73 up to 1980. The one in your picture looks like a late 70’s or 1980 model. The wording in the darker part of the cowl is the word script indicating the motor horsepower, i.e. a 100hp motor would have “One Hundred” written in the dark area.
Edit – I think that style of engine cowling in your picture was only used on the 100hp Javelins.
Bob
1937 Champion D2C Deluxe Lite Twin
1954 Johnson CD-11
1955 Johnson QD-16
1957 Evinrude Fastwin 18
1957 Evinrude 3022
1958 Johnson QD-19
1958 Johnson FD-12
1959 Johnson QD-20
1982 Evinrude 25hp
“Every 20 minute job is only a broken bolt away from a 3-day project.”
"Every time you remove a broken or seized bolt an angel gets his wings."
