I wouldnt imagine it would be too much different to a TSV90 linkage wise.
Oh and i was going to say before but i forgot.
The valves on the earlier Tecumseh motors were the same as a Briggs. Dont know why or when they swapped them but they did.
Is it that motor thats the pain, you cant get the mainfold off without taking the muffler off first.
Every time i go to the scrap yard, If i see a tecumseh I always grab the air filter and lid. The older rectangular ones. Take em home wash em out and put them in my filters box. Mower shop says you cant buy them.