Want this question answered?
1977 50:1
The 1977 model, 85 hp Johnson outboard requires a 50:1 ratio, roughly one pint of 2 cycle oil, to six gallons of fuel.
The fuel to oil ratio for a 1977 model, 115 hp Johnson outboard, would be 50:1, roughly one pint of 2 cycle oil, to six gallons of fuel.
50to1
50:1
A 1977 model Eska outboard requires a 50:1 mixture, ( water cooled model.) The air cooled models use 32:1.
50:1
Champion L77-JC4 plug set to .030in.
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.
Gas/Oil Mix = 50:1
The 1977 model, 140 hp Evinrude outboard, requires a 50:1 ratio, one pint of 2 cycle oil, to six gallons of fuel.
I just purchased a 1977 merc 7.5 horse and the mechanic said to use 4 ounces of oil per gallon of gas.