Several months ago I posted a multi-part series here entitled “Keep Your Drive Alive”. Why? Because there have been quite a few issues with saildrives corroding away. We know why, and I discussed all of the issues during that series. Apparently the issue has become prevalent enough that Yanmar America is responding with a very detailed service bulletin that not only describes the problem, but offers up the same information I had provided here. If you have a Yanmar saildrive, I strongly suggest you take heed and look this over carefully. Since the bulletin is also intended for end users, I’m placing it here in it’s entirety.