I bought an old boat with a new engine
was installed approx. 3 years ago and how has approx. 200 hours.
It is a Yanmar
3YM20. 20HP. SerNum E00447
I am concerned about zinc sacrificial anodes!
I have downloaded the shop manual and can find no mention of zincs I have asked local folks and I get both yes I have them and no I don't.
One respected source has a similar engine and says-- no zincs on engine but the heat exchanger
may have zincs.
So answers run the full gamut---
So can anyone with a Yanmar
Thanks a lot--- Rick