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yamaha 1989

  1. Boat Repair - Questions,Answers and Suggestions
    ok so i have a 1989 yamaha 175hp 2 stroke but i can not get it to rev up more then 2300 rpm so i can only go at half speed. does anyone have any ideas of what i should check? already had prop rehubbed carbs cleaned twice replaced all spark plugs and replaced the neutral safety switch...any...
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