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Yamaha 8HP 4 Stroke Whine/Rattle Noise
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<blockquote data-quote="Sinkingfast" data-source="post: 437756" data-attributes="member: 15306"><p>If gun to my head..I'd say gear whine..it does start out at the beginning low in pitch and rises with rpm. Might be cam chain if it uses one. But I'd say the lower gears might not have been properly set in the vary beginning. I doubt it uses straight cut bevel gears...they can be noisy even when set properly.</p><p></p><p>What happens to that sound when in neutral..</p><p></p><p>Years..and I mean years ago one would put fine saw dust in an automobiles rear gear box before sale to quiet down worn or maladjusted gear sets.. Not at all suggesting that cure...just a fun fact :shock:</p></blockquote><p></p>
[QUOTE="Sinkingfast, post: 437756, member: 15306"] If gun to my head..I'd say gear whine..it does start out at the beginning low in pitch and rises with rpm. Might be cam chain if it uses one. But I'd say the lower gears might not have been properly set in the vary beginning. I doubt it uses straight cut bevel gears...they can be noisy even when set properly. What happens to that sound when in neutral.. Years..and I mean years ago one would put fine saw dust in an automobiles rear gear box before sale to quiet down worn or maladjusted gear sets.. Not at all suggesting that cure...just a fun fact :shock: [/QUOTE]
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Yamaha 8HP 4 Stroke Whine/Rattle Noise
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