In a message dated 01/3/1999  9:54:51PM,  ulix@u.washington.edu writes:
<< idle jets: low rpm to lower mid rpm depending on carb/venturi size 
 main jets: medium rpm
 air jets: high rpm
 emulsion tubes: pure luck, have to use trial and error, rarely changed
 acc. pump jet: increase when flat spot on stomping the pedal
  >>
This is good advice from Ulix but you still need to get the main & aux venturi
right first because if they are wrong you will still have a problem and
changes in venturi invariably mean changing several other jet groups (as Ulix
described).
Daniel1312
 
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