What series is the 400 ex pilot jet is it a 21 or 22 series or does anyone know.Your help is much appreciated.

 

The 400 uses the pilot jet that has tyhe threads on the large part of the jet. Which number it is I don't know, but get the one with the threads in the middle on the large part of the tube. Hope this is some help to you

 

It uses the 21 series pilot jet hope that helps

 

its a 21, i know for a fact, i ordered soem yesterday 40 and 42