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I have a 1984 90hp Mercury outboard and the fuel mixture is 50:1 which is one pint of 2 cycle motor oil for every 6 gallons of gas.

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0A 175hp Mercury outboard requires a 50:1 fuel to oil ratio.

all mercury outboards mix 50:1

The fuel to oil ratio for a 9hp Mercury outboard is 50:1, roughly one pint of 2 cycle oil, to six gallons of fuel.

The 2 stroke, 25 hp Mercury outboard requires a 50:1 ratio, this is roughly one pint of 2 cycle oil, to six gallons of fuel.

The 4.5 HP Mercury Outboard requires 50 to 1 fuel, to 2 cycle oil ratio. A mix of six gallons of gallons of fuel to one pint of oil is a good mix for the Outboard.

The 20 hp Mercury outboard requires a 50:1 ratio, roughly one pint of 2 cycle oil, to six gallons of fuel.

A 4hp Mercury outboard requires a 50:1 fuel to 2 cycle oil mix.

I believe it is 50 : 1 (16 oz. oil to 6 gallons gas)

50:1 . 1 pint 2 cycle to 6 gallons gas

The 1978 model, 75 hp Mercury outboard, requires a 50:1 ratio, roughly one pint of 2 cycle oil, to six gallons of fuel.

If it the Yamaha import it 100:1 and if late model Mercury built it s 50:1

-+ i have a 1987 20hp Mercury - mix is 50:1

As far as I know is 50:1.

From the oil you mix in with the gas

it is recommended for all fuel oil mix to be 50:1

Sea foam is good for any outboard motor and you can tell the difference between tanks of gas if you stop using it. 1 ounce per gallon is reccomended by manufacturer, and that is how i mix it for my classic fifty.

The 1987 model, 45 hp Mercury outboard requires a 50:1 ratio, one pint of 2 cycle oil, to six gallons of fuel.

The 2 cycle 40 hp Mercury outboard requires a 50:1 ratio, one pint of 2 cycle oil, to six gallons of fuel.

The 1976 year model, (ser.#4420321), 4.5hp Mercury outboard, requires a 50:1 fuel, to 2 cycle oil ratio. Mixing one pint of oil, to six gallons of fuel, will be a good mix.

The gas/oil mix for a Force 50hp outboard is 1:50

The in-line 4 cylinder, 50 hp Mercury outboard requires a 50:1 ratio, one pint of 2 cycle oil, to six gallons of fuel.

The 1985 model, 70hp Mercury outboard requires a 50:1 ratio, one pint of 2 cycle oil, to six gallons of fuel.

By 1971, virtually all outboard manufacturers had gone to the 50-1 mix, and Mercury prided itself on being ahead of the game, so you are safe with the 50-1.

50 to 1 according to my mechanic

1 pint to 6 gal. of gas

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