Idle Speed & Mixture Adjustment
With engine at normal operating temperature, let idle for one minute. Adjust throttle adjusting screw so that engine speed is 800 RPM with transmission in "N". Adjust idle adjusting screw so that CO percentage is 1.5±.5%. Repeat adjustment until CO is 1.5±.5% at 800 RPM. On models with Auto. Trans, shift transmission into "D" and check that idle speed drops to 650 RPM. If not, repeat adjustment until 650 RPM is achieved with a CO reading of 1.5±.5%.