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  1. #1

    Default Ted Williams 9.9hp fuel mixture

    I recently aquired a boat with a test Williams 9.9 hp motor. But I have no clue what fuel/oil mixture to use any help would be much appreciated. The model number is 217/58621-1.
    Thanks in advance for any help

  2. #2
    Join Date
    Dec 2015
    Location
    maplevalley WA
    Posts
    5,049

    Default Re: Ted Williams 9.9hp fuel mixture

    I put it at a 1976 gamefisher 50:1 mix

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