50 to 1 ratio
Except that on that engine, you SHOULD have your variable-rate oiling system hooked up. If it's not there (because the boat's previous owner removed it), 50:1 is correct.An Evinrude 25hp outboard, 1985 year model, requires a 50:1 fuel, to 2 cycle oil ratio. This is roughly one pint of 2 cycle oil, to six gallons of fuel.
45 : 1
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 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 1981 model, 70 hp Evinrude, requires a 50:1 ratio, one pint of 2 cycle oil, to six gallons of fuel.
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.
1991 evinrude 9.9 engine, could you tell me the gas oil ratio please