Kohler 15RYG, Installation Manual

Page: 30 / 64

TP-6329 8/07 30 Section 3 Installation Instructions
8. Reinstall the cover plug.
9. Check the fuel connections for leaks with the
generator set running.
10. With the generator set running at rated load, use a
UEGO oxygen sensor to check and adjust the fuel
mixture.
Use Oxygen Sensor Service Kit
GM29385 and follow the instructions in Section
3.8.2.
Natural Gas Fuel Conversion Procedure
Use the following steps to convert the generator set to
natural gas:
1. Rotate the regulator so that it is pointing up.
2. Remove the fuel regulator cover plug. See
Figure 3-11.
3. Install the spring and adjustment screw.
4. Set the adjustment screw to 11 mm (7/16 in.) below
the top of the regulator.
5. Connect leads 65 and 70A at the quick-connects in
the wiring harness.
6. Connect a manometer to check the fuel supply
pressure on the carburetor side of the regulator.
7. Adjust the fuel pressure with the generator set
running at full load. Rotate the adjustment screw
on
the secondary fuel regulator until the
manometer indicates a fuel pressure of 4--6 inches
water column.
8. Reinstall the cover plug.
9. With the generator set running at rated load, use a
UEGO oxygen sensor to check and adjust the fuel
mixture. Follow the instructions in Section 3.8.2.
3.8.2 Fuel System Adjustment
Procedures
Hot engine and exhaust system.
Can cause severe injury or death.
Do not work on the generator set until
it cools.
WARNING
Servicing the exhaust system. Hot parts can cause
severe injury or death. Do not touch hot engine parts. The
engine and exhaust system components become extremely
hot during operation.
Use a UEGO oxygen sensor to check the fuel system
adjustment. Use Oxygen Sensor Service Kit GM29385
or GM58035.
1. Place the generator set master switch in the OFF
position.
2. Disconnect power to the battery charger, if
equipped.
3. Disconnect the generator set engine starting
battery, negative (--) lead first.
4. Allow the generator set to cool.
5. Install the oxygen sensor in the exhaust manifold at
the location shown in Figure 3-12.
1
tp6329
1. Exhaust manifold pipe plug
Figure 3-12 Oxygen Sensor Mounting Location
6. Connect the oxygen sensor harness as directed in
the instructions provided with the oxygen sensor
kit.
7. Check that the generator set master switch is in the
OFF position.
8. Reconnect the generator set engine starting
battery, negative (--) lead last.
9. Place the controller master switch in the RUN
position to start generator set.