Getting a outboard motor unseized

[@fleetwin1]

Go ahead and clean up those rusty cylinder walls with some light emery cloth...Not to worry, you can't hurt this engine. Next, I would center the pistons (closing off the ports) and fill each cylinder with some sort of anti rust spray/oil/tranny fluid/whatever.... Let this soak for several days in an effort to free up the rings if they have rusted in place on the pistons.