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(There is no) Zinc pencil on Yanmar 3GM30F
I have a Yanmar 3GM30F in my boat, and the manual says I should replace the zinc pencil at last yearly. The manual states that the pencil is labeled with the words 'anti corrosion zinc', but I have looked all over the darn heat exchanger and can't find the thing (maybe the label sticker fell off?) -- the manual doesn't have a diagram pointing to it either.
Can anyone who owns a 3GM30F explain where the zinc pencil is, or send a picture showing me where to look! I can't bear the thought of my poor engine corroding, but I don't want to start randomly removing bolts looking for the thing...
Last edited by jgsteven; 01-28-2009 at 03:34 PM.