The oil / fuel ratio for the 1977 model, 85 hp Evinrude outboard, is 50:1, roughly one pint of 2 cycle oil, to six gallons of fuel.
The 1977 model, 200hp Evinrude outboard requires a 50:1 ratio, one pint of 2 cycle oil, to six gallons of fuel.
The 1977 model, 140 hp Evinrude outboard, requires a 50:1 ratio, one pint of 2 cycle oil, to six gallons of fuel.
The 1975 year model, 100 hp Evinrude, requires a 50:1 fuel to oil ratio.
The recommended ratio for Johnson and Evinrude outboards, manufactured prior to 1965, is 24:1. This is roughly one pint of 2 cycle oil, to 3 gallons of fuel.
50:1 all of the Johnson evinrude up to 1963 when they changed to 24:1
ratio is 16 ounces of oil per six gallons of fuel
The 1981 model, 70 hp Evinrude, requires a 50:1 ratio, one pint of 2 cycle oil, to six gallons of fuel.
The 1977 model, Evinrude 15 hp outboard engine, requires a 50:1 ratio. This is one pint of 2 cycle oil, to six gallons of fuel, or 2.5 - 3 oz. of oil per gallon of gasoline.
All Johnson and Evinrude outboards manufactured prior to 1965, require a 24:1 fuel to 2 cycle oil ratio.
The 1994 model, 2 stroke 15 hp Evinrude outboard will operate well on a 50:1 ratio. One pint of 2 cycle oil, to six gallons of fuel.
The 1971 model, 18 hp Evinrude outboard requires a 50:1 ratio, one pint of 2 cycle oil, to six gallons of fuel.