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Thomas Barth

This how I do it (Dellorto).

Before installing carb, look from rear at slide….adjust just a little gap in slide…set idle/air to 2 – 2 1/2 turns out….install carb, start engine set idle at preferred idle speed…accelerate engine quickly…if there is hesitation set needle clip to top position (lean accel setting)…normally engine will accelerate cleanly when you get to this point. If not adjust idle/air screw until accel is clean. Note, the clip position is used to raise or lower needle for timing of fuel to engine when accelerating (does not alter mixture – just timing).