fuel/oil ratio for 1990 9.9 hp mercury gas motor

does anyone know the correct fuel/oil ratio for a 1990 9.9 hp mercury gas motor i just purchased one but they didn't have the owners manual

Re: fuel/oil ratio for 1990 9.9 hp mercury gas motor

Howdy, Ken.

Welcome to iboats.

50:1, Ken. That's a pint of TC-W3 outboard oil to 6 gallons of 87 octane unleaded.

Re: fuel/oil ratio for 1990 9.9 hp mercury gas motor

thanks for your help i really appriciate it.

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