Ok, so I got a 1976 Fiberform Bimini 19ft with trailer. I am looking at the viability of fixing it up to donate to a non-profit. The floor and stringers will need to be replaced (I have experience with that) so I know what I am into with it. However, I don't have experience working with the OMC 165 stringer drive and engine. The engine seems straight forward GM style inline 6 (I grew up with Chevy inline 6's though including rebuilding one in my dorm room at college). I pulled the valve cover and the top end looks almost new even though this boat has been sitting for probably 15 years. I pulled the lifter covers and they look almost new too. No rust at all in either place and the engine has full oil with no water at all. Before I invest the effort I decided to try to turn it over. The starter was seized so I pulled that off. Using short bolts in the crank pulley I can move the crank back and forth about 1 inch rotation. However, it stops there and doesn't seem to want to go further. Now, to my lack of knowledge on the stringer drive. It is currently in the full up position and the prop free wheels so guessing it is out of gear. Is it possible that the engine won't turn over due to the outdrive being in the full up position or other problems with it??