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Adjusting co value without catalytic converter – BMW K 1100 LT/RS User Manual

Page 34

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Adjusting CO value without catalytic converter

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Note:

Engine must be at operating temperature (85 °C).
The basic settings (ignition, valve clearance) must
be correct.

Insert test probe (arrow) approx. 30 cm into the
silencer.

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Caution:

Do not take this measurement in an enclosed
space; risk of asphyxiation.

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Note:

If unsuitable air extraction equipment is used, it may
falsify the reading.

Run the engine at idle speed.

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Caution:

Adjusting screw (2) has no limit stop in both direc-
tions.

Turn adjusting screw (2) to vary the CO value.

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Note:

Turn in direction (1) for a richer mixture; the CO value
will rise towards its maximum value. Turning further
in direction (1) will not vary the CO value any further.
Turn in direction (3) for a leaner mixture; the CO val-
ue will drop to a minimum. Turning further in direc-
tion (3) causes the engine’s emergency-run
programme to operate and has no influence on the
CO value.

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Caution:

If the engine’s emergency-run programme comes
into operation, fault 1111 will be memorised by the
engine control unit.

If necessary, perform fault diagnosis, rectify the
fault and cancel the memory entry.

Using the BMW synchrotester, adjust idle speed
at the recirculating-air screws.

CO value ..........................................1.5 ±0.5 Vol.%
Idle speed ..........................................950 ± 50 rpm

LT000290

LT000300

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