G 3500 1 Ton Van V8-350 5.7L VIN M 4-bbl (1983)
Accelerator Pump: Adjustments
Fig. 9 Quadrajet M4M series pump rod adjustment
With throttle valves completely closed and pump rod in specified hole, measure distance from top of choke valve wall (next to vent stack) to top of
pump stem. Dimension should be as specified in the Specifications Chart. To adjust, bend pump lever, Fig. 9.