Tecumseh OHH Service manual link
 

Searching around today i found a link that downloads the service (not users) manual for the Tec OHH/OHV engines. In the center of the page, yellow section on the right is "4-Cycle OHV Service Information" That's the complete Tec manual covers a pretty wide variety and covers the differences between the models (shows all the carbs, linkages for each type etc.). Wish I had this when i was messing with the carb/gov. linkage setup

http://www.smallenginesuppliers.com/...ine-specs.html