Shop time to replace oil pump gasket on Honda BF75

[teredosn]

I've a 1985 Honda BF75 kicker that runs fantastic but has a very slow (One drop every few seconds when running) oil leak. The oil is clean and as best I can tell it is coming from the underside of the head near the oil pump which is mounted on the bottom of the head. Since the one oil pump bolt I could get a wrench on was slightly loose, I'm thinking that the leak is coming from the oil pump gasket. Neither I nor my marina think much of even small oil slicks behind boats and so I want to get this fixed.

Per my shop manual you have to remove the timing belt and pulley and then pull the head in order to get access to the oil pump. I don't really want to do that just now and was hoping someone might have a notion of how much shop time the job might take by a pro when I take it in?

Thanks.