That is right, so the Tecumseh clone has two needle adjust screws. It is meant to have the engine idle. See post 23 second picture attached. If I order and find out that the filter needs extra parts to attach to Tecumseh clone carb, not only will I have to get the part and wait, but extra cost.
I am already considering possibly a whole different engine all working.
Anyway where does the airfilter alone gonna be able to attach to the far side in the picture of the Tecumseh clone carb? The throat and holes are tapped for screws in the carb intake. I can't see how at all the filter by itself can attach.
What I think Amazon and others are having both bundled for is those who already have a Tecumseh Engine with Tecumseh Carb and are replacing the carb, so why not get a new airfilter. I am such that I am mixing brands and do not have the backing plate or the filter housing, so it means more cost. When I'm done I have already paid half the cost of a new HF 99cc on sale.
I am handy at making parts fit by modding other parts, but I have a better thought, for double the cost a new whole engine complete.