Vacuum Assist Spring (Primary Floats)
NOTE:
This adjustment not required on some models.
With air horn upright and level (see Fig 1), hold vacuum power piston in full upward position, bounce floats lightly to make certain cup retainer on vacuum assist spring is not binding on upper power piston stem. Measure distance from gasket surface to center of dimple on side of float at toe end. Distance should be as shown in specification table. To adjust, bend tang at center of float arm as shown in illustration.