SVE 8 Zincs

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Feb 10, 2009
21
Hunter '75 H27 Shearwater
I just purchased a 1975 H27 with a SVE 8 Yanmar. It's rew water cooled, and I was told there should be a Zinc in the system somewhere. If there is, I can't find it. Any clues?

Thank you.

Shawn
 
Sep 25, 2008
7,476
Alden 50 Sarasota, Florida
No clue where but there is apparently a part number so that may be an indication one does exist someplace:


Manufacturer: Yanmar
Part Number: 104211-41300

Description:
ZINC, ANTI-CORROSIVE
 
Feb 17, 2004
268
Hunter 30_74-83 Lower Salford, PA / Tolchester,MD marina
I have a YSM12 on a '79 Hunter 30. The engine zinc is below a square plug on top of the engine. I could not remove mine ten years ago and still have not. I do keep two zinc's on my prop shaft which are replaced once every spring before going back in off the hard.

Don't worry about it.

Ian
s/v Meant to Be
 
Sep 25, 2008
7,476
Alden 50 Sarasota, Florida
I would respectfully disagree with Ian's suggestion that you not worry about it. The zinc on or close to the heat exchanger serves to protect it, not the prop and shaft. Similarly, the shaft zinc serves to only protect the shaft and prop. The efficacy of an anode is very sensitive to both electrical distance and path resistance, both of which combine to make a shaft zinc useless in protecting the heat exchanger.
If Yanmar designed the SVE8 to have a zinc anode, it's worth the slight trouble and the $6 in cost to find and replace it regularly.
 
Feb 10, 2009
21
Hunter '75 H27 Shearwater
Thanks all, I will search a little more today. The clue posted above will help I think.

The odd thing is that I have the original owners manual, and I could not find any mention of zincs, but I was sure they should be there.
 
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