Daewoo KORANDO Service Manual page 744

5. Ensure not to damage the idle spring in the governor and
adjust idle speed by turning the PLA unit (5) slowly.
Clockwise
Counterclockwise
Notice
Do not rotate the PLA unit over ½ turn from the position
marking. If do, idle spring in the governor will be severely
damaged.
6. After adjustment, tighten the locking nut and place the
position marking with different color of paint.
Notice
If there are no changes in idle speed with PLA unit
adjustment, perform the service at a BOSCH Service Center.
7. Connect the vacuum pump to the PLA vacuum unit and
build up vacuum approx. 500mbar. If engine rpm increases
by approx. 100rpm, It is normal.
8. Connect the vacuum line (4).
9. Switch on all ancillaries and check the idle speed.
RPM Decrease
RPM Increase
Vacuum Pump 001 589 73 21 00
OM600 ENGINE CONTROLS 1F3-17