Since your outboard is considered an "Antique" you may want to search the web for antique outboard clubs and see if someone there can point you in the right direction. I doubt if you would find any current repair shops that want to mess with it.

There's a place called Twin Cities Outboard out of Minnesota that may be able to help you if you can't find assistance where you are. Here is a link... http://www.twincityoutboard.com/
They have 1,000's of old outboards for parts. Give them a call; maybe they can help you over the phone or they may be able to get it running if you ship it to them. Good luck with the repair!