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380-hp Yanmar 6LY3-UTP Maintenance protocol

Discussion in 'Technical Discussion' started by SeaEric, Feb 26, 2017.

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  1. SeaEric

    SeaEric YF Historian

    Joined:
    Jan 28, 2007
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    Location:
    Easton, Md./Ft. Lauderdale
    Greetings all, I am a yacht broker representing a buyer in the purchase of a single engine sedan powered with a 2009 vintage 380-hp Yanmar 6LY3-UTP. The engine has 1700 hours on it. Her (original) owner has performed all of his own maintenance. The engineroom is clean as a pin and the mechanicals all look really good. My impression is that the service has been mostly oil changes and periodic water pump impellors and such basics. I asked the owner if the aftercooler had been apart and cleaned/serviced or flushed. It has not. As I read on the net, it would seem that valves should have neen adjusted by now as well. The owner is a capable guy and he has a detailed log since day one. I believe that he has done a good job with what he has done.

    What else should we be looking out for (besides a Yanmar certified mechanic) prior to survey? Any tips or experience with this particular model and HP Yanmar that I can gather in advance would be greatly appreciated.
  2. Capt J

    Capt J Senior Member

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    I'd have the dealer come out and do the engine survey. They can quote prices which you can use to your advantage. I think that's it, but valve adjustment, aftercoolers, etc. should have been done a few times already as well as injector nozzles once I believe if memory serves me right. My lucky guess is that you're selling a mainship.
  3. SeaEric

    SeaEric YF Historian

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    Easton, Md./Ft. Lauderdale
    Good guess. Thanks for the info.

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