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351 RFS Jetting?

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The 250RFS has poor jetting to begin with. Try a #45PJ, and a richer needle clip position.

The jet kits have the 45PJ and a full set of instructions that should be a major improvement. (click the banner ad above for more details)

James

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Part # JDK004

The 250 RFS jetting kit has jets and needles chosen for the 37mm carb and will match your bike more closely. Use 1 step smaller main jet and set the fuel screw to 1 1/2 turns with the kit's pilot jet.

Thanks,

James

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