Note. Idle speed adjustment must be carried out on a warm engine, with the starting device turned off, with a clean air filter element, with a working ignition system and correctly set ignition timing, with a sealed exhaust system, in the absence of air leaks and switched off consumers of electricity with a heavy load (electric fan, rear window heating element, etc.).
Adjusting screw 1 for the amount of the mixture, set the crankshaft speed within 800-900 rpm on vehicles with a manual transmission and 900-1000 rpm on vehicles with automatic transmission.
Connect the gas analyzer.
Remove the plug from the adjusting screw 2 quality (composition) mixture and, rotating it, achieve the required content of carbon monoxide (SO) in exhaust gases.
Screw 1 restore the crankshaft speed to 800-900 or 900-1000 rpm.
Check CO content. If necessary, use the adjusting screw 2 to restore the required CO content.