OK, I found the part number for the 112 main jet, and it is 92063-1117 , but it seems more or less impossible to find any part number for the N96J needle - really impossible. I found the info about the main jet at Kawasaki's spare part page, but searching for N96J doesn't give any results back

(Couldn't even find KLE 500 as an available model, so I had to look for other models with 112 main jet, so I went for EN-500, which should work fine)

The following URL gives all spare parts for 500cc bikes from kawasaki, and as you can see, KLE 500 does NOT exist
https://www.kawasakiepc.com/SystemSe...SearchBy=Model

Update: The part number for the N96J jet needle is 16009-1657

Update2: It seems like the older KLEs are using the same vacuum spring as the newer one, as you can see from these two sources
KLE -92 : kawasaki carburetor parts partsmanual fiche 1992 a2 kle500 (this page can also be used to look for carburator parts on the older KLEs)
KLE -00 (as in 2000) kawasaki carburetor parts partsmanual fiche 2000 a10 kle500

I hope this is what you (including me, as this have been of great interest to me as well) have been looking for


Extra note: b.t.w. 2x3mm washers on each needle? If I am not incorrect, that should make a huge difference, and I mean huge (as in going really rich); sure you do not mean 2x0.3mm? If you really used 2x3mm washers, did you not feel any kind of stumbling? How much did it affect your milage? I only used 1 single 0.5mm washer on each needle, and think it improved the performance (ofcourse, in the middle range) noticably, but not sure if it's enough