A ratio of 50:1 would be required, this is roughly one pint of 2 cycle oil, to six gallons of fuel.
1981, the CI stands for 1981
The proper mixture for that motor is 50:1. Approximately 2.56 oz. of oil to 1 gallon of gas.......5.12 oz. of oil to 2 gallons of gas....etc..
one liter fuel 10 mill oil
A 1998 model 4hp Merc outboard runs on a 50:1 fuel to oil ratio. This works out to roughly one pint of 2cycle oil to six gallons of fuel.
The 4WF69B model, 4hp Johnson, would be a 1969 year model.
A 4hp Mercury outboard requires a 50:1 fuel to 2 cycle oil mix.
Johnson 4hp outboard bj4brcud
The proper spark plug for 4hp Briggs & Stratton is a J8 which I use in all my motors.
about 60cc
25
If manufactured prior to 1965, a 24:1 ratio is required. Models 1966 and later use a 50:1 fuel to 2 cycle oil ratio.
1969