A: Carefully try tightening the cable. Look behind the Harley enrichener cable bracket. You will see a zinc plated nut. Tighten this ONLY SLIGHTLY. Just a nudge will do. If you over tighten, you will break the cable, so be very careful. You are tightening a steel nut, over a plastic, hollow, shaft.
Explained in this video @ 14:50:
Throttle Cable Lubrication & Adjustment / Air Filter Replacement / Enrichener Cable Service