Reply To: 1955 RD17

[frankr]

Cupped end goes toward the packings.  Assemble the packing nut, packings, and bushing onto the needle a few turns.  Now push the whole assembly into the carb and tighten the packing nut just enough to keep the bushing from spinning.  Turn the needle in until lightly seated, then back it out 1-1/2 turns for preliminary adjustment.  Finally, tighten the packing nut enough to hold it from spinning from vibration.