NEW K&S Technologies - 56-1005 - 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