Pilot Air/Fuel Screw Adjustment Explained - Single Carb - Part 1

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Check the O-ring at the Back of the Screw Hole After Removing the Pilot Screw Which is Often Overlooked!

【Fitment】:Fits most Keihin FCR & FCR-MX Carburetors,fits most common 4-stroke models (Reference fit models as following).fcr air fuel screw adjuster

Air Fuel Mixture Screw CNC Adjust Carb FCR Air Screw Compatible with KEIHIN Carburetor Four-Strokes FCR Carbs Motorcross Motorcycle(blue)

Pilot Air/Fuel Screw Adjustment Explained - Single Carb - Part 1

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Air Fuel Mixture Screw CNC Adjust Carb FCR Air Screw Compatible with KEIHIN Carburetor Four-Strokes FCR Carbs Motorcross Motorcycle(red) : Automotive

ASK THE MXPERTS: KEIHIN FCR FUEL SCREW KNOW-HOW - Motocross Action Magazine