Adjustment of Secondary Throttle Valve for S10/T10 Blazer 2WD L4-121 20L VIN Y 2-bbl (1983)
Secondary Throttle Valve: Adjustments
Fig. 15 Secondary lockout adjustment
1. Hold choke valve wide open by pulling on intermediate choke lever.
2. Position throttle lever until end of secondary actuating lever is opposite toe of lockout lever, Fig. 15.
3. Insert specified gauge between throttle lever and secondary lockout lever toe.
4. To adjust, bend lockout lever tang contacting fast idle cam.