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About K&S Carburetor Air Cut-Off Valve Set

K&S Carburetor Air Cut-Off Valve Set

  • Direct OEM-style replacement carburetor air cut off valve set
  • Include diaphragm, spring and O-ring
  • Located on the side of the carburetor the air cut off valve prevents lean fuel mixture (backfire) when decelerating
  • Temporarily closes the pilot jet airway to provide a richer mix as the throttle closes
  • Sold in sets for one carburetor.

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