I found a general parts breakdown at this site by searching for "Tecumseh carburetor parts breakdown". I have some old manuals that I downloaded when Tecumseh was possibly going out of business but they are for TC200 and TC300 engines. There are breakdowns of Walbro, Tillotson and one Tecumseh carb but I don't know if they would be the same as yours. They are not very clear illustrations but might be better than nothing. The one at the following site is much clearer than mine.

http://www.wfmfiles.com/download/Tecumseh_Carburetor_Repair_&_Governor_Adjustment_Guide.pdf