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Old 07-16-2013
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Re: Yanmar Transmission Clutch Problem

Quote:
Originally Posted by Rusty123 View Post
The referenced Yanmar tech bulletin says to leave the transmission in neutral during sailing, but that the shaft can be locked (with an add-on device) if the user doesn't like the prop rotation noise.

Question: what does prop rotation noise sound like? I get a faint squeal or whine (a little like a bad bearing) from my transmission when under sail in neutral. Is that sort of noise normal?
Often times a free-spinning prop will sound a bit like a low humming noise. There may be a bit of a squeal (if your listening to the transmission more directly, such as via an open lazarette), kind of like a car gearing down. If in doubt, take a look at the shaft to see if it's turning.
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