The All Balls/ MSR carb rebuild kits come with the correct OEM needles for the specific year that you order, and not the crap generic Chinese needle that the other no name kits come with. Here is the All Balls part # for your 02' CR250. It's worth a shot.
https://www.amazon.com/All-Balls-26-1165-Carburetor-Rebuild/dp/B01I4OLL…
The Shop
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