Why isnt my tecumseh carb listed in their cross reference material??

I located the carb number on my OHV13 engine. BTW, the engine number is 203206a. The engine is also known as 'Formula 13'

The carb number is 1556ESK
Here is link to pic
https://www.dropbox.com/s/unht2ttplwewtew/Tecumseh carb number.jpeg?dl=0

Great, now I am getting somewhere!

Can anyone tell me WHY my carb isnt listed in the Tecumseh cross reference?

Click link for pic of reference material and notice mine isnt listed!
https://www.dropbox.com/s/ejo3f3rn074q05q/Tecumseh cross ref.png?dl=0

Am I Jinxed? All I want is to find an inexpensive replacement carb

Thank you for taking the time to help me out-

Tony

the part number of the carb for your engine is 632650 or can also use 632774. Hopefully that will narrow down your possible options.

ILENGINE-

Thank you very much Sir !

I had been thinking the 632774 might work (and it does cross reference to your suggestion) however I was afraid to make the move based on my first purchase which was incorrect.


Once I get the generic carb, i will be able to be more aggressive in cleaning the original one.

I really appreciate it.

Tony