Caution: Fulfil the adjustment conditions. The engine letter designation is stamped on the left side of the cylinder block. For ignition timing values, see Chapter "Ignition system".
1) Measure at the CO sampling tube.
2) The engine idle speed and CO content are not regulated.
3) If the measurement location 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 engine idle speed is not adjustable.
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5) From 8/90: 925 ±100 1/min.
6) The plug from the temperature sensor is disconnected.
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