Kohler 14RESA Manual page 117

setup of the air/fuel (A/F) reader. See SB-675,
provided with the oxygen sensor kit.
2. Press the OFF button on the controller.
3. Disconnect utility power to the generator set.
4. Remove the oxygen sensor plug from the silencer
and install the oxygen sensor. See Figure 6-30 for
location.
5. Follow the instructions provided with the oxygen
sensor kit to connect the oxygen sensor to the
power supply and A/F reader.
1
1. Oxygen sensor mounting location
Figure 6-30 Oxygen Sensor Mounting Location on
the 14RESA/RESAL Silencer
6. Reconnect utility power to the generator set.
7. Press the RUN button on the controller to start the
generator set.
8. Allow the generator set to run until the engine
reaches normal operating temperature.
9. With the generator set at normal operating
temperature, apply rated load.
10. After several minutes, note the air/fuel ratio meter
measurements and compare to the  (lambda)
values in Figure 6-31.
Air/Fuel Mixture
 Values
0.923--0.944
* UEGO sensor readings shown for reference
Figure 6-31 Acceptable Oxygen Sensor Readings,
14RESA/RESAL
11. Adjust the fuel metering valve as required to obtain
the output from the oxygen sensor specified in
Figure 6-31.
TP-6805 8/15
GM84037
UEGO Sensor Reading,
VDC*
2.60 ± 0.05
12. When the fuel mixture is correct, use thread sealant
to seal the metering valve adjustment screws.
13. Remove the load and allow the generator set to run
unloaded to cool for at least 5–10 minutes.
14. Stop the generator set by pressing the OFF button
on the controller.
15. Disconnect the generator set engine starting
battery, negative (--) lead first.
16. Disconnect utility power to the generator set.
17. Allow the generator set exhaust system to cool.
18. Disconnect the DVM leads from the oxygen
sensor.
19. After the sensor has cooled, remove the oxygen
sensor from exhaust manifold.
20. Apply a small amount of antiseize compound to
exhaust plug and reinstall the plug into the exhaust
manifold.
21. Reconnect the generator set engine starting
battery, negative (--) lead last.
22. Reconnect utility power to the generator set.
Section 6 Component Testing and Adjustment 117