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2003 honda cr250 jetting

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Not sure if your running the Kehin or the stock mikuni carb ? These jetting specs would be a good starting point asuming you have a good running motor that doesn't need a rebuild. I ran these specs on my 03 with good results with the exception of an s8 nozzle but felt it could have been a little leaner with an s7 nozzle.

Mikuni jetting

Pilot - 32.5

main - 390

needle - 6bey30-74

clip pos - 3rd

AS - 2

nozzle - s7

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