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

Here's an easy trick to know which way to turn air fuel screws on any

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basic carburettor adjustment (tuning) 4 stroke, and how it works.

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O-ring Design: The fuel mixture screw has an o-ring design to resist engine vibration and increase accuracy and longevity. Carburetor adjuster screw

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Motion Pro carburetor pilot screw adjusting tool. This is a long flat head screwdriver with a 90 degree bend on the end so you can reach in and adjust

Motion Pro Pilot Screw Adjusting Tool

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Tuning the Pilot Fuel Screw and reaping the rewards