Thank-you for the help Louis and Brian. I appreciate your time and information. Perhaps I will be asking more as the restoration progresses.

You guys are killing me:
The parts manual for WF-4 and WG-4 is already on the Wizard site here. about half way down is the parts manual free. The post right after it, is how to convert the part numbers into the last current mercury part numbers.

Brian, that is a thing of beauty! What a great resource. Thanks much for telling me about these documents, and posting them on this site.