should be on the middle clip position
remove cap from carb, pull spring up out of slide, push down on cable, tilt it to allow the retainer to fall out, look how it is in there first, so you know how it goes back in, the cable should pop out of it's slot in there,
carefully, with proper size phillips screwdriver remove the 2 screws you see down in there, remove that piece, push needle up/out from bottom, pay attention to the plastic washer(s) on the needle, see what slot it is on, should be on the middle,
if not......
carefully lay needle flat, then push the needle down onto a flat surface with the clip opening facing down, hold your hand over it while doing it so the clip doesn't end up across the garage, or you lose an eye, LOL
place in the middle clip position and push down onto flat surface to re-seat it
reassemble in reverse procedure