A guy I met has a 16ft Jon Boat that he bought new in 2005 along with a new 2005 johnson 9.9 that he is selling due to health reasons. He has had the boat in the water 2 times with a trolling motor but the 9.9 hasn't been started or ran since 2005 when he bought it new. He said the dealer winterized it before him taking possession of it. The engine does look like new but what problems am I looking at if I decide to make an offer. I know seals dry out and sitting isnt the best thing for any engine. He said I could hear it run before buying but I'm not too sure he realizes it might not be that simple. Any advise or cautions? Thanks