Fuel Conversion, Multi-Fuel Systems - Kohler 8.5RMY Service Manual

17. Disconnect the DVM leads from the oxygen
sensor.
18. Remove the oxygen sensor from the exhaust
manifold.
19. Apply a small amount of antiseize compound to
exhaust plug and reinstall the plug into the exhaust
manifold.
20. Check that the generator set master switch is in the
OFF position.
21. Reconnect the generator set engine starting
battery, negative (--) lead last.
22. Reconnect power to the battery charger, if
equipped.
6.11.6 Fuel Conversion, Multi-Fuel
Systems
Generator sets with multi-fuel systems are CARB- and
EPA-certified for both natural gas and LP vapor fuels.
The multi-fuel system allows conversion from natural
gas to LP vapor (or vice-versa) in the field while
maintaining emissions-standard compliance.
Two fuel connections on the fuel block allow field-
conversion between natural gas and LP vapor. The fuel
metering valves are factory-set and sealed to comply
with applicable emission standards and to provide the
best possible hot and cold starting.
Note: Do not adjust the factory-sealed fuel-metering
adjustments on the fuel block. Changing the
fuel-metering adjustments on these units may
violate federal or state laws.
The manufacturer ships the generator set with the fuel
system connected for natural gas. To convert to LP gas,
use the following procedure to move the fuel line from
the natural gas outlet port to the LP outlet port in the fuel
block (or from the LP outlet to the natural gas outlet to
convert from LP to natural gas). See Figure 6-30 for the
fuel block and fuel inlet locations.
56 Section 6 Component Testing and Adjustment
1
OUT IN
1. Multi-fuel block
2. Fuel inlet, 1/2 in. NPT female
Figure 6-30 Multi-Fuel Generator Set Fuel Block
Location, Air Inlet Side
WARNING
Accidental starting.
Can cause severe injury or death.
Disconnect the battery cables before
working on the
Remove the negative (--) lead first
when disconnecting the battery.
Reconnect the negative (--) lead last
when reconnecting the battery.
Disabling the generator set.
cause severe injury or death.
generator set or connected equipment, disable the generator
set as follows: (1) Move the generator set master switch to the
OFF position. (2) Disconnect the power to the battery charger.
(3) Remove the battery cables, negative (--) lead first.
Reconnect the negative (--) lead last when reconnecting the
battery. Follow these precautions to prevent starting of the
generator set by an automatic transfer switch, remote
start/stop switch, or engine start command from a remote
computer.
2
ADV-6600
generator set.
Accidental starting can
Before working on the
TP-5867 11/02