P & Q Series Carburetors Secondary Linkage Adjustment

  • Super Progressive
  • Black Link
  • 1st Hole
  • Bottom Slot

60% of primary throttle is used before secondaries open.
  • Medium Progressive
  • Gold Link
  • 1st Hole
  • Top Slot

40% of primary throttle is used before secondaries open. This is the standard linkage position for most applications.
  • 1=1
  • Silver Link
  • 3rd Hold
  • Top Slot
Using the alternate lower hole and top slot, the silver link provides a even opening ratio for both the primary and secondary throttle shafts.


    NOTE: Please be certain to use the washer and cotter pin to secure the linkage to the primary throttle lever. Operate the linkage after making changes to be certain the throttle operates correctly without any binding or sticking.