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    1997 Yamaha 9.9 6G9 - one cylinder does most of the work

    Hello, My 1997 Yamaha 9.9 6G9 4-stroke has an "interesting" problem. It seems like the lower cylinder does most of the work while the upper one acts rather unpredictably. A little prequel on how I discovered the problem: After installing an inductive tachometer, I noticed the RPM's of the...
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