fuel/oil ratio '85 mercury

rustybol

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Joined
May 29, 2001
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I've just gotten a 9.9 horsepower 1985 mercury outboard and I don't know the fuel/oil mixture. Can somebody help me out with this? I appreciate it.
 

JB

Honorary Moderator Emeritus
Joined
Mar 25, 2001
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45,907
Re: fuel/oil ratio '85 mercury

50:1, Rusty. That's one pint of premium outboard oil to six gallons of fresh 87 octane lead and alcohol free gasoline.<br /><br />Luck.<br />JB
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