Choke Vacuum Kick (Plug Gauge Method)

Choke Vacuum Kick Adjustment (Plug Gauge Method):

1. Attach a rubber band to the green tang of the intermediate choke as shown. Open the throttle to allow the choke valve to close.
2. Connect a vacuum pump to the nipple on the choke diaphragm, and apply 18 in-hg vacuum. The air valve rod must not restrict the plunger from retracting completely. If necessary, bend the rod to permit full plunger travel. Final rod clearance must be set after the vacuum kick setting has been made.
3. With the vacuum still applied, apply a slight opening pressure on the choke blade and insert the specified plug gauge between the top of the choke blade and the air horn casting, refer to SPECIFICATIONS for the correct plug gauge size, based upon carburetor number. Make the adjustment by bending the link until a slight drag is felt when the gauge is removed.
4. Remove the rubber band, and the plug gauge.