I have a 4Year old SD20 Sailddrive, Lake Ontario, 6 months in and out. corrosion was apparent year 1. I sanded off Yanmar paint and applied 2000E. Looks like I have to repeat every year?
I am going on my 26th season with my SD20 saildrive...
boat is in the water on a mooring 8 months a year in salt water on Long Island Sound.
I change my exterior zinc once a year and change interior
zinc as needed (not often).
Paint with outdrive paint every year.
No evidence of corrosion.
Do you change zincs?/ Do your zincs corrode?
Are you in a slip or a mooring?
Any of your neighbors experiencing similiar corrosion problems?
Have you had the boats electrical system checked for
stray current?
I have an SD20 and dip it in Lake Ontario for several months a year too. I noticed corrosion the first haulout. I replaced the anode with a magnesium material. I don't think it's getting any worse and I am currently going to look into someone paying for redoing the saildrive corrosion fix-up. The magnesium anode only lasts one season and it appears to be done. The original that came with the boat looked new after one season. I suspect it was the wrong type for fresh water. I don't think I should have to pay for someone elses mistake.
Seems that Lake Ontario is eating up SD20's...
Point of information...there is an interior anode on
the side of the saildrive in addition to the lower exterior one.
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Re: Yanmar Saildrive Corrosion
