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Stumbling 50hp Yamaha Pro
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<blockquote data-quote="Planepilot" data-source="post: 187732" data-attributes="member: 4411"><p>I have a 1987 Yamaha Pro 50. I have rebuilt the carbs twice and changed out the plugs. The engine idles perfectly. The mid and top range is smooth and powerful. Once I start to bring the power up above 1200 rpm the motor stumbles and hesitates. As I bring the power up above 2000 rpm it smooths out and runs like a top. I can't figure it out. Any ideas? Could it be my prop?</p></blockquote><p></p>
[QUOTE="Planepilot, post: 187732, member: 4411"] I have a 1987 Yamaha Pro 50. I have rebuilt the carbs twice and changed out the plugs. The engine idles perfectly. The mid and top range is smooth and powerful. Once I start to bring the power up above 1200 rpm the motor stumbles and hesitates. As I bring the power up above 2000 rpm it smooths out and runs like a top. I can't figure it out. Any ideas? Could it be my prop? [/QUOTE]
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