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Old 05-06-2022, 10:51   #16
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Join Date: Jan 2008
Location: Cape Town, South Africa
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Re: Bad vibration at > 1000 RPM in forward gear

Your engine is not aligned with your shaft or when doing the last haul out the yard put a sling on your prop shaft and bent it.
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Old 06-06-2022, 09:22   #17
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Re: Bad vibration at > 1000 RPM in forward gear

FWIW just had the same problem after having my boat bottom painted. Thought I had a bent shaft and as it turned out had a bad thrust bearing.
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