Its 4 stroke so 100:0
50:1
The 850 model, 85 hp Mercury outboard, is a 2 stroke engine requiring a 50:1 fuel to oil ratio.
50:1
Mercury outboards of 1986 lineage require a 50:1 ratio. One pint of 2 cycle oil, to six gallons of fuel.
A 175hp Mercury outboard requires a 50:1 fuel to oil ratio.
For the 1961 Mercury Model 60 outboard motor, the recommended fuel-to-oil mixture ratio is 24:1. This means you should mix 5.3 ounces of two-stroke engine oil per gallon of gasoline. Always check the owner's manual for any specific instructions related to your motor.
My 2003 3.3hp outboard motor is 50:1 mixture.
mix 50:1
50:1
50 to 1
50 to 1 oil and gas mixture
50:1