Hi stockman, welcome to Outdoorking. Tecumseh ceased production of engines in December 2008, so yours will have been New Old Stock when you bought it. Production of original equipment parts stopped when engine production stopped. However some of the more popular parts are probably being produced again by now, specifically as spares.

I suggest you have a look at the first post in this thread:
https://www.outdoorking-forum.com.au/forum/u...=7230&Words=timing&Search=true#Post37761

Mr Bonnar, the author of the thread, names the suppliers who sold him parts for his very old (1970s) Tecumseh. You might care to contact them and see what parts they have for your engine.