19 degrees BTDC, + or - 1 degree at WOT. Around 4 degrees ATDC idle timing.
The dry weight of the 1985 model, 70 hp Evinrude outboard is 257 lbs.
The 1977 model, 70 hp Evinrude outboard requires an NGK BZ7HS-10, or a Champion QL77JC4 Plug gapped to .030 in.
A 70 hp Evinrude outboard, model number E70ELCO, would be a 1985 year model.
50:to1
The dry weight of a 1979 70hp Johnson outboard is 240 to 256lbs. depending on the model.
135 to 160 most important thing is that they are all less than 5 psi difference
The 1981 model, 70 hp Evinrude, requires a 50:1 ratio, one pint of 2 cycle oil, to six gallons of fuel.
It is a 70 HP 1975 Evinrude. The 5 indicates the year. I just bought a1975 Evinrude yesterday & looked up the number.
A 1979 70 HP Johnson burns about 3.5 GPH at 3/4ths WOT
1992
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