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Yamaha F40TLRD Idle and Butterfly Screw Settings

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  • Yamaha F40TLRD Idle and Butterfly Screw Settings

    I have a 2005 model, F40TLRD that recently cleaned the carb, and swapped jets to the F25 recommended version. Going to try to finish up tuning tomorrow. Is there a starting place for the idle screws and butterfly screws ? RPM range at idle to look for ? I hooked it to the carbtune but the idle seemed way high. Thanks in advance.

  • #2
    https://www.vansoutboardparts.com/se...maha-f40b/file

    2 turns out from being lightly seated on the idle mixture screws.

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