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  1. B

    Nothing above 2000

    I have a 1971 Mercury straight 6, 135 HP outboard. It has sat for several years and I had the carburators overhauled. I took the boat to Lake Powell and it ran great. The next trip I couldn't get the motor to go above 2000 RPM'S. I changed props from a 19 pitch to a 15 pitch with no...
  2. B

    Nothing above 2000

    I own a 1971 Mercury outboard. It is a straight six 135 HP engine. I cannot get the motor to go above 2000 rpms. When it was used by my Dad, it did. The boat sat for several years and now has this problem. I've tried changing props but with no difference. I've had the carburators...
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