Fuel mixture for 1975 65hp Mercury?????

POWERHEAD766

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Joined
May 14, 2011
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Sorry, I have searched all over. I even have a Mercury outboard tune and repair manual but I haven't been able to find a definitive answer on this. Just bought the boat, it was sitting for 7 years and it started right up with a 25:1 mix (couldn't be much richer than this) and seems to idle fine with sufficient flow from the tattle tail. If someone can answer this or better yet send me a link for the information that would be great, thanks.
 
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