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A 4hp Mercury outboard requires a 50:1 fuel to 2 cycle oil mix.
The 7.5 hp Mercury outboard requires a 50:1 ratio, one pint of 2 cycle oil, to six gallons of fuel.
A 50hp Mercury outboard, requires a 50:1 fuel to 2 cycle oil ratio, roughly one pint of 2 cycle oil, to six gallons of fuel.
50:1
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50 - 1
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50:1
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.
all mercury outboards mix 50:1