Idle Adjustment (1971-73)
Idle speed is adjusted at bypass air screw with engine warm (oil temperature a minimum of 140°F) and with choke fully open. Set idle speed to following specifications.
| Type | Idle RPM | |
|---|---|---|
| Man. Trans. | Auto. Trans. | |
| I | 850±50 | 950±50 |
| II | 850±50 | |
NOTE:
Do not turn limiting screw or volume control screw to adjust idle.
It is only necessary to adjust volume control screw if a new carburetor or volume control screw is installed. To adjust, carefully turn volume control screw in as far as possible and back off 2 1/2 to 3 turns. Set idle speed with by-pass air screw to 850-950 RPM. Adjust volume control screw to obtain maximum RPM, then turn screw in so that speed drops 20-30 RPM.
Set this final idle RPM using by-pass air screw only.