greg bender

http://www.thisoldtractor.com/gtbender

Atomizer specifications for PHBE-PHF-PHM carburetors

This information was gleaned from Beedspeed.

Code NumberTypeX value measured in hundredths of a millimeter.
8540 x 28AB260-262-265-268-270-272-275
8979 x 28AF330-340-350-360
9593 x 28AR260-262-265-270