50 : 1 is the correct fuel mixture
A 4hp Mercury outboard requires a 50:1 fuel to 2 cycle oil mix.
50;1
50:1
50:1
50:1
50:1
I have a 1999 Mercury 2stroke 5HP outboard and the owners manual states 50:1 Gas/Oil mixture.
For a 1981 115 horsepower Mercury outboard engine, the recommended oil-to-fuel mixture is typically 50:1, which means mixing 2.5 ounces of oil per gallon of fuel. It's important to use a high-quality two-stroke outboard oil to ensure proper lubrication and engine performance. Always refer to the owner's manual for specific recommendations and any updates on fuel mixtures.
20/1
the mixture is 50:1
For the Mercury 9.9 Two Stroke Engine it is 50:1...