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.
My 2003 3.3hp outboard motor is 50:1 mixture.
mix 50:1
40:1 ratio
50:1
50 to 1
50 to 1 oil and gas mixture
50:1