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.
Johnson 4hp outboard bj4brcud
BJ4BRE1A Is made in 1991 and the Fuel mix is 50 to 1
Johnson/ Evinrude 2 cycle outboards after 1964 used a 50-1 gas oil mix.
The 4WF69B model, 4hp Johnson, would be a 1969 year model.
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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.
1969
1969.
1981, the CI stands for 1981
one liter fuel 10 mill oil
The recommended plug gap for the 2000 model, 4 hp Johnson is .030 in.