1999 Johnson 200 Ocean Pro

[Mulv80]

I'm going on Saturday to look at a 1999 Johnson 200 Ocean Pro. the owner estimates the motor to have approx 500 hours. It shows some corrosion on the motor bracket consistent with a slip kept boat. Its a 99' Aquapsort 215 DC with a Galvanized roller trailer of the same vintage. I can pick up the package for $8500 which I think is a good deal. The owner wasnt really looking to sell till I contacted him so I don't think he has anything to hide. the boat is shrink wrapped and winterized so I'll have to uncover it to run it. Is there anything in particular with this motor to look out for other than the basics, Compression, Overheating, Lower Unit condition?