Carburetor Idle Speed Adjustment

With engine at normal operating temperature, turn air screw to obtain 700 RPM (manual transmission) or 625 RPM (automatic transmission).

Fig 1: Idle Adjustment Screws

Courtesy of AMERICAN MOTORS/RENAULT CORP.

Then turn fuel screw to obtain highest RPM. Repeat operations until maximum RPM when turning fuel screw, is 700-725 RPM (manual transmission) or 625-650 RPM (automatic transmission). Now turn fuel screw in (leaning mixture) until a reduction in RPM of 20-25 RPM is obtained. Check that idle is smooth at this speed and that CO level is 2%.

NOTE: Before attempting to adjust fast idling system, the regular idle adjustment procedures must be completed.

Fig 2: Decelerator Adjustment Screws

Courtesy of AMERICAN MOTORS/RENAULT CORP.