Engine idle adjustment
Engine idle adjustment is made on a warm engine (oil temperature not less than 60°C), with the choke fully open, with the ignition timing correctly set and the clearances in the valve drive mechanism adjusted.
Using a connected tachometer, boil the engine speed, which should be in the range of 900-1000 rpm.
If necessary, the adjusting screw of the amount of the mixture (see photo) achieve the crankshaft speed within the specified limits.
Connect the gas analyzer in accordance with the instruction manual.
Switch off current consumers.
Disconnect the air supply hose from the air filter on the cylinder head cover and close the hose hole with a plug on the side of the air filter.
Turn the throttle valve and turn the curly sector of the starting device to move the limiting screw from the stop position to the sector.
Remove the plug of the quality adjusting screw (composition) mixtures.
Adjust the CO content in the exhaust gases within 1.0-2.0% by turning the adjusting screw (shown by the arrow in the photo); during adjustment, the cooling radiator fan should not rotate.
After adjustment, lock the adjusting screw and close it with a plug.
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