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  1. #1

    Default rich lean setting

    I have a 1975 evinrude 9.9hp. how many turns from lighty closed to properly set the rich/lean setting? it only has the one setting knob.
    any help would be great.

  2. #2
    Captain
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    Default Re: rich lean setting

    I can't remember but I'll check my book tomorrow and let you know if no one jumps in with the correct answer. Rick.

  3. #3
    Commander
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    Default Re: rich lean setting

    start at about 1.5 turns. start the motor and let it warm up. at idle turn the knob in until it begins to stumble or cough. then back it out until it just smooths out.

  4. #4
    Honorary Moderator Emeritus tashasdaddy's Avatar
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    Default Re: rich lean setting

    FLORIDA GATORS
    TEBOW Country



    Please, NO PM's (Private Messages) regarding boat/engine problems. they will not be answered.
    That is what these forums are for. Post your questions, in the appropriate Forum.

  5. #5

    Default Re: rich lean setting

    Thanks for the advise.
    Fore fisher

  6. #6
    Captain
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    Default Re: rich lean setting

    Here is a link that is a must read for 9.9 and 15 OMC owners. Enjoy. Rick.
    http://forums.iboats.com/engine-frequently-asked-questions-faq/9-9-15hp-omc-engines-machinist-158087.html

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