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

L

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.

e

Caution:

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

L

Note:

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

•

Run the engine at idle speed.

e

Caution:

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

•

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

L

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.

e

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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