I have the manual and the sweet 8 page schematic poster, but I don't have a scanner or know anything about scanning. I guess I could look into it, or try to send you some pics?
It's my understanding the reason we don't see these manuals available for download is that Heathkit is still stringent on the copyrighting of their materials. I do see the manuals pop up on Ebay.
Also let me know if you need to see specific parts of the manual and I will try to help