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Discussion Starter · #1 ·
Hi! Anyone knows what are the oem specs on carb needle (letters and number) for a 1986 atc 250r? I have NR146 but i believe its not oem keihin. Having midrange issues and thinking to put oem carb parts on my stock engine. I only have reeds, kn filter and rear muffler. My main jet is keihin #145, pilot #42. Any info or advice is greatly appretiate it!
 
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