Biznut

Hello, I have a couple quick questions. I recently inherited 2 boats from my father who didn’t have time to maintain or use them. • I was wondering if there was a way to get a diagnostic test done on the engine to identify any issues that I’m not aware of? • How much does it cost to get a head gasket replacement on one of the Mercury Outboard Motors? There is water intrusion. • How much is it to replace the controls of the other Mercury Outboard Motor? The old ones are deteriorated. The engine itself, as far as I know, still runs fine. • Should I take these boats to a local marina and have them do the work and run tests? Or should I find a boat mechanic? I know these labor costs vary, but a ball park range would be super helpful. I’m very new to boating and am eager to learn so any and all information would be useful.