Attention! It is carried out during maintenance, as well as in case of violations in the operation of the engine (see Diagnostics of malfunctions of the engine and its systems).
Adjustment is carried out on a warm engine.
By turning the idle mixture adjustment screw with your fingers (made of black plastic), set the crankshaft speed 800±50 min–1 (air filter housing removed for clarity), and turning the quality screw with a slotted screwdriver, the content of carbon monoxide in the exhaust gases is not more than 3%.
When you press the pedal «gas» the engine should increase the speed of the crankshaft without interruption, and when the pedal is released, it should not stall.
Turning the quantity screw clockwise increases the crankshaft speed. When the quality screw is turned clockwise, the CO content in the exhaust gases decreases.