The stock carb looks like a Walbro and a Walbro repair kit fits it.

But the carb is a EMAS from China. It doesn't say Walbro on it anywhere and the characteristic size number is not in the venturi.

There is no reason to not consider it for practical use to be a Walbro?

The size of the venturi is close to 5/16" or 20/64" A weed whacker carb should work on it as they were mostly this size.