Today I ran into some debris and thought nothing of it. Quickly checked the prop and all seemed ok. I headed down river a couple miles and decided to take another look. So I trimmed up the stern drive and when i restarted the engine I heard a knocking sound coming from the drive. I was able to trim the drive back down and could no longer hear the knock. The boat was able to make it back to the dock about a five hundred yards away with what seems to be no ill effect. After I moored the boat I trimmed up the drive again and restarted the boat the knock came back. Does anyone have an idea what the problem may be? Should I chance enjoying the end of Labor Day weekend or just call it a season and try to mitigate any damage that may have occurred.
