How long before winterizing Yamaha Four Stroke?

[Gerry Zagorski]

Originally Posted by togzilla

That's what I thought but when I spoke to my Yamaha technician in Manahawkin he lead me to believe that leaving the engines in the water for a week or two could cause damage even with the zincs I have in place.

If you have a known electrolysis problem in your marina he's right... If you have people in your marina with inboard or I/Os they would know so you might ask around.