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Go Back   SailNet Community > On Board > Gear & Maintenance > Engines > Diesel
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Diesel This is a forum dedicated to diesel engines and their applicable accessories.


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Old 11-08-2010
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What Gear for Yanmar While Sailing

What gear should you put a Yanmar engine in while sailing?

Reverse to stop the prop or neutral.

I have seen where Yanmar issued a notice that the transmission should be placed in neutral and not fwd or reverse gear to prevent clutch damage. I have a 3GM.
Thanks, Casey
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Old 11-08-2010
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Neutral is the Yanmar suggestion.
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Old 11-08-2010
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Yanmar recomends neutral. But if you have a folding/feathering prop you will want to use reverse.

Gene
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Old 11-09-2010
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As others have stated Yanmar says neutral. With a folding prop, I've heard that its "OK" to switch briefly into reverse to feather the prop, but return to neutral. I've wondered if this is right?
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Old 11-09-2010
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For years the official Yanmar recommendation was to put the gear in reverse and only recently did they change their policy, so briefly putting the gear in reverse after turning off the engine in order to fold the gears shouldn't be a problem. That is what I do, although I usually forget to do that and only do a quick switch reverse and back to neutral when I get that humming sound from below while sailing.

Yanmar Advisory MSA08-003 "Gear in Neutral While Sailing"
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Old 11-13-2010
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Quote:
Originally Posted by Zanshin View Post
For years the official Yanmar recommendation was to put the gear in reverse and only recently did they change their policy, so briefly putting the gear in reverse after turning off the engine in order to fold the gears shouldn't be a problem. That is what I do, although I usually forget to do that and only do a quick switch reverse and back to neutral when I get that humming sound from below while sailing.

Yanmar Advisory MSA08-003 "Gear in Neutral While Sailing"
and does that stop the humming? I haven't tried that with my Kiwiprop.
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Old 11-13-2010
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Shortman,

With a Maxprop it seems to stop the rotation...humming.
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Old 11-15-2010
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Quote:
Originally Posted by Shortman View Post
...and does that stop the humming? I haven't tried that with my Kiwiprop.
Yes, the humming comes from the partially folded prop still turning in the water flowing past it. Putting the engine into gear stops the shaft and the prop folds completely and then has no tendency to turn anymore even after the shaft is put into neutral.
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