Hello all. I just bought a boat has the 170 mercruiser. I got it to start and there is antifreeze in the upper housing but it is getting hot on the ear muffs. The man said it was still winterized. Is there a valve or something I have to open or were do I begin my search. This is my first IO and the engine sounds really good. Is there a pee hole on the out-drive. I'm lost here. Thanks tons, Chris oh its a 1986
