Out she comes
The impeller on the OMC is just an inch or so below the waterline, you will need to pull the boat to replace it. Additionally, it makes things easier to address if problems are incountered. If this is the 1st time you've done a job like this, be carefull and clam. the bolts are old and likely corroded. Get your self a good set of 6pnt box end wrenches to avoid rounding off any bolts.FYI, I've got a 1980 28'. It had an OMC saildrive. I finally got the money together to replace it with a Yanmar. Honda also makes a saildrive sutable for the Oday. Pick up a good old boat magazine and look for the adds. Good luck!