Vacuum Kick

Fig. 11 Vacuum kick adjustment:

With engine running, back off fast idle speed screw until choke can be closed to kick position at idle. Note number of screw turns so fast idle can be turned back to original adjustment. Insert specified gauge between long side (lower edge) of choke valve and the air horn wall, Fig. 11. Apply sufficient pressure on choke control lever to provide a minimum choke valve opening. The spring connecting the control lever to the adjustment lever must be fully extended for proper adjustment. Bend tang as shown to change contact with end of diaphragm rod. Do not adjust diaphragm rod. A slight drag should be felt as gauge is being removed.