Accelerator Pump

With accelerator pump rod in specified hole (inner or outer) of accelerator pump lever, make sure fast idle cam follower is off fast idle cam steps. Turn throttle stop screw out until it no longer contacts throttle lever.
Using a "T" scale, measure specified distance from top of choke valve wall (next to vent stack) to top of pump stem.

NOTE: Adjustment procedure applies to GM models, only.

To adjust, support accelerator pump lever with screwdriver and bend at notch. See Fig 1.

Fig 1: Accelerator Pump Adjustment