Re: 87 Sea Ray, OMC outdrive no worky
I am fairly new to the outdrive world, I have a 76 OMC with electric shift giving me problems. Anyhow, the first thing I would check is the shift linkage and stuff related to that. With manual shift linkage I believe you should be able to put it in gear at the throttle, ENGINE OFF!!!

and your prop should not turn. Also make sure all of your oil levels are good. I would recommend a book for that drive, they are around $35 and worth every penny. Good Luck...