50 : 1 is the correct fuel mixture
I have a 1999 Mercury 2stroke 5HP outboard and the owners manual states 50:1 Gas/Oil mixture.
50:1
-+ i have a 1987 20hp Mercury - mix is 50:1
50:1 ratio which is 1 pint to 6 gallon of fuel
A 115hp Mercury outboard boat motor has a fuel to oil ratio of 50 to 1. This translates to 16 ounces of 2-cycle oil to every 6 gallons of fuel.
I would assume 50:1 but call the manufacturer to confirm
A 4hp Mercury outboard requires a 50:1 fuel to 2 cycle oil mix.
50;1
50:1
50:1
50:1