Welcome to the new Wizard Outboard Forum.
Thanks for the information I now know where to start.
The PDF of some manuals is available:
Go to: http://search.ebscohost.com/
Log in with:
P.W. : public
-----Go under the Small Engine Repair Reference Center then marine....you will find similar motors under Tecumseh.
The powerhead was made by Tecumseh and you will probably find parts on Ebay pretty easily.