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
A 4hp Johnson outboard motor typically uses a mixture of gasoline and 2-cycle oil, usually in a ratio of 50:1 or 100:1, depending on the specific model and year. It's important to consult the owner's manual for the exact fuel-oil ratio recommended for your particular motor. Using the correct mixture helps ensure optimal performance and longevity of the engine. Always use fresh, unleaded gasoline to avoid potential issues.
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.