adarvasi;
I can't make out much on the first picture, but on second picture, curved end of spring should be on the other side of peg cast into housing. This is clearly visible here (and the spring preload should obviously be to return the jet to the raised position):
Source:
http://www.sw-em.com/checkchoke.htm
Suggestion: When a disassembly of a complex assembly lies ahead, take record pictures before to help with reassembly after.
Cheers