Join Date: Nov 2009
Location: Lander, Wyoming
The OEM KLX650 service manual does not even state what Keihin Needle Jet # / size is used. It simply gives the 16017-1367 part number! Used in both the -A dirt model & -C dual sport model.
I can also only suggest one try the KLR650 #6 / 16017-0055 needle Jet. It will either be richer or leaner, I would guess.
Maybe one ought to also order the KLX650-A adjustable jet Needle, circlip & thick brass top spacer, works well on the KLR650s, correct?
Modify at "YOUR OWN RISK"!
Still riding my 1987 KL650-A1. 85,000+ miles & counting