2002 jetting
I just bought a 2002 kx125, it came from denver colorado and was ridden in the mountains, its all stock except a fmf fatty pipe, heres what i found inside the carb, the main jet stock is 350, it has a 270, it has the stock pilot 45, it has the stock needle 6beki-69 and the clip was on the second from the top groove , the stock setting is on the third groove from the top, i ride in nebraska which is around 4000 to 4500 feet, the spark plug was burning just a little lean, and it has a slight bog on the bottom end, not bad but noticable, i dropped the clip one notch to the stock setting, im going to ride it again soon and do a plug chop to see whats what, the inside of the exhaust is very dry, no spooge anywhere , if anyone else rides at close to this altitude let me know what your settings are, im guessing the 270 main is 7 sizes smaller than stock, the bike rips when its on the pipe, but i think i need to richen it up just a bit...thanks ..let me know