01-16-2007, 03:37 AM
I'm not super familiar with 2 stroke carbs, but the spring loaded one is your fuel/air mixture screw. Clockwise will make the mixture more rich and counter clockwise will make it more lean. You'll have to check with your sled manufacturer for the appropriate settings. Usually you finger tighten this screw, then back it out about 2 turns, then make minor adjustments from there. Not sure what the one on the left does, sorry.
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