yamaha 4 stroke 115hp water in oil 2002

[seaswept37]

I have found water in my oil pan . the problem has occured twice in one engine. I have them rebuilt They say your zinks are at fault. I change them every year and do not keep the boat in the water,i keep the boat on a trailer.I would like to know what YAMAHA is doing about this problem? seaswept37

[boats.net]

You can have your dealer call Yamaha and explain to them what causing the problem, Yamaha should be able to give you an answer.

[Junior]

They say your zinks are at fault. seaswept37

Huh? What zincs are they referring to? I didn't know zincs had anything to do with keeping water out of your oil. (other than stopping corrosion of course).