Attention: Fulfill the adjustment conditions. The engine code is stamped on the left side of the cylinder block. For ignition timing, see chapter «Ignition system».
1) Measure at the CO sampling tube.
2) The idling speed of the engine shaft and the CO content are not regulated.
3) If the measurement site is located at an altitude of more than 300 m above sea level, it is necessary to add 0.2% by volume for every 100 m of altitude.
4) The idle speed of the engine is not adjustable.
5) C 8/90: 925±100 rpm
6) The plug from the temperature sensor is disconnected.
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