1964 or 1965
try iboats.com
your 9.8 hp mercury is a 1964, unless its a white motor then it could be a 1963
Evinrude and Johnson outboards prior to 1965, require a 24:1 ratio, so the 64 model would be a 24:1 fuel to 2 cycle oil mix.
The later 7 hp used 24 to 1.
i used 1 qt to 6 gal. but it was 1964 and we used 30 weight oil
It is a 1964 model, 3 hp Johnson Sea Horse, i hope my answer has been of great help to you>
It is a 1964 model, 3 hp Johnson Sea Horse, i hope my answer has been of great help to you>
1959 thru 1963 Johnson and Evinrude use a 24 to 1 ratio. 1964 and up is 50 to 1
1964
Joan Coles has written: 'Seloc's OMC cobra stern drive, 1985-1987' -- subject(s): Handbooks, manuals, Inboard-outboard engines, Maintenance and repair 'Seloc's Mercury outboard' -- subject(s): Handbooks, manuals, Maintenance and repair, Outboard motors 'Seloc Johnson/Evinrude outboards 1956-70 repair manual' -- subject(s): Handbooks, manuals, Maintenance and repair, Outboard motors 'Seloc's Mercury/Mariner outboard' -- subject(s): Handbooks, manuals, Maintenance and repair, Outboard motors 'Seloc's Volvo Penta stern drive' -- subject(s): Handbooks, manuals, Inboard-outboard engines, Maintenance and repair 'Seloc's Force Outboard Repair Manual' 'Seloc's OMC stern drive, 1964-1986' -- subject(s): Handbooks, manuals, Inboard-outboard engines, Maintenance and repair 'Seloc's OMC Cobra and King Cobra stern drive, 1985-1995' -- subject(s): Handbooks, manuals, Inboard-outboard engines, Maintenance and repair 'Seloc's Mercruiser stern drive tune-up and repair manual, includes Alpha and Bravo, 1964-1991' -- subject(s): Handbooks, manuals, Inboard-outboard engines, Maintenance and repair 'Seloc's Johnson/Evinrude outboard' -- subject(s): Handbooks, manuals, Maintenance and repair, Outboard motors 'Seloc Johnson/Evinrude outboards 1971-89 repair manual' -- subject(s): Handbooks, manuals, Maintenance and repair, Outboard motors
It's difficult to find the year without the model number. Johnson only made 60 H.P. motors in the following years. 1964, 65, 66, 67, 70, 1971.