Funsail, I just bought a boat with 4500 engine hours, so like Stanley said, if they are kept up with they run for many hours. Things like mounts,
exhaust, water supply, etc. Sorry I don't know anything about that particular engine but if water flow is good, then it should be good. At survey make sure you run it hard and for a while, and the
surveyor will check temps at different spots. If it is yard maintained, I'd be curious to look at records so you know whats been done for sure. I don't like the idea of no hour meter, but if owners did
maintenance seasonally, then its probably better than some owners who have an hour meter.
Good luck and hope you find a boat to sail soon-
csh