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Old 01-25-2013, 10:50 AM   #5
JD
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City: New Bern NC
Vessel Name: Stella Di Mare
Vessel Model: Mainship 34t
Join Date: Apr 2010
Posts: 1,702
Quote:
Originally Posted by djmarchand View Post
This is what I did a few months ago as a self performed survey on a Yanmar 6LY-STP 370 hp engine:

1. Take an overall look to get a feel for how well the engine was maintained. Look for fluid leaks. Pull the zinc on the air cooler (big brass bolt on the aft port side outboard of air filter) as that is one of the first to go and see if the zincs have been maintained. Check fluid levels and the looks of the oil.

David
David,

That big Zinc is not the one that goes the quickest on my 6LYA-STP. The one on the trans cooler and the oil cooler then one of the ones on the water exchanger. Of the six these three are always the worst at the six month interval. I change all six with fresh, they are cheap enough.
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