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1987 yamaha 9.9 2 stroke

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  • 1987 yamaha 9.9 2 stroke

    I got a yamaha 9.9 1987 model sh and it idles down good but when i run it at full throttle it seems very underpowered. I was thinking about adjusting the carb to see if that will fix it ... any suggestions?

    P.S.
    bought the motor used from a sketchy outfit so perhaps they tried to adjust it and screwed up the high idle.

    thanks

  • #2
    Run a compression test, check to see what pitch prop is on it.
    Regards
    Boats.net
    Yamaha Outboard Parts

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    • #3
      could the high idle be out of adjusstment ?

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