Looking at the diagram of your motor in the online catalogue (above), I'm having a hard time determining if you could add a starter.
Assuming all the mounting holes are in the block, you would need a starter, starter relay, a flywheel, a starter switch, and associated wiring. It would be a pretty expensive project.
Try posting your question again as a new post - late at nite, so that boats.net mechanic can answer you the next morning - he seems to answer most often those posts that don't have any responses yet.
Good luck [img]smile.gif[/img] ,