The 1981 model, 35 hp Evinrude requires a 50:1 ratio, 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.
A 15 hp Evinrude, model number RCIS would be a 1981 year model.
50:1
1981
50:1
The dry weight of a 1981 Evinrude 140 is between 365 and 370lbs. depending on the model.
1981
E15RLCIS, is a 1981 year model, 15 hp Evinrude outboard.
Between 180 to 190 lbs depending on model.
Mix it 50:1. That's a pint of two cycle oil per 6 gallons of gas.
300 pounds
The 1981 model, 35 hp Johnson outboard requires a 50:1 ratio, one pint of 2 cycle oil, to six gallons of fuel.