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    1991 Yamaha 9.9 4 stroke wont keep running

    I just took my boat out of storage and tried to test run my motors. My 1991 9.9 4 stroke High Output motor will only start and run fine if i partially block the air intake to the carb with my hand. I have cleaned the carb, started with new fuel with carb cleaner added. It seams to be getting to...
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