Re: 305 Volvo penta will not turn over help
This...
"running good then at the end of the day he loaded up went home.............next time he tried to start it it would not turn over"
does not jive with "the starter needs a shim", just sayin'.
A starter shim will not just wear out or disappear, so if it truly ran good the last time (whenever that was!) then something happened later that he is not telling you, just my opinion.
Did they say when that last time was? End of last season? or years ago...! makes a difference.
It may not be a locked up engine but they are definitely leaving some of the story out.
As suggested, definitely have someone knowledgeable with you if you decide to check it out. Get the seller to talk more and see if more "bad" comes out, or if they contradict themselves. If other family members come around then ask them how much fun it was until it had problems, that kind of thing. Just stay casual, no need to call them out on it right then and there if something does not add up, but the more info you have the better for you.
Some sellers know how bad it is but act dumb and put together some amorphous mashup of a story regarding what they think it needs, usually not related to what is wrong. Then when called out on it the tune changes to "Oh Wow, I had no idea (thanks for taking it off my hands)." I guess it is easy for them to live with you thinking they are just dumb versus you knowing they are a liar.