14 Section 1 Installation TP-6842 7/15
1.7 Fuel Conversion
The multi-fuel system allows conversion from natural
gas to LPG (or vice-versa) in the field while
maintaining emissions-standard compliance. A
trained technician or an authorized distributor/dealer
can convert the fuel system.
Figure 1-6 shows the fuel system components.
Disabling the generator set. Accidental starting can
cause severe injury or death. Before working on the
generator set or connected equipment, disable the generator
set as follows: (1) Press the generator set OFF/RESET
button to shut down the generator set. (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.
Figure 1-6
Figure 1-6 Fuel Block, 6VSG
1.7.1 Fuel Conversion, 6VSG
Two fuel connections on the fuel block allow field
conversion between LPG and natural gas. 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 may violate federal or
state laws.
Use the following procedure to convert from LPG to
natural gas (NG). The procedure includes moving the
fuel connection from the LP port to the natural gas,
plugging the LP port.
Procedure to convert from LPG to NG, 6VSG
1. Press the OFF button on the generator set
controller.
2. Disconnect the utility power to the generator set.
3. Disconnect the generator set engine starting
battery, negative (–) lead first.
4. Turn off the fuel supply.
5. Remove the hose clamp and fuel hose from the
hose fitting in the fuel block. See Figure 1-7.
6. Remove the hose fitting from the LP port in the
fuel block. See Figure 1-7.
7. Remove the plug from the NG port in the fuel
block. See Figure 1-7.
Accidental starting.
Can cause severe injury or death.
Disconnect the battery cables before
working on the generator set.
Remove the negative (–) lead first
when disconnecting the battery.
Reconnect the negative (–) lead last
when reconnecting the battery.
Explosive fuel vapors.
Can cause severe injury or death.
Use extreme care when handling,
storing, and using fuels.
1
5
2
3
4
KPS_036
1. Fuel block
2. Fuel metering valves—factory-sealed, do not adjust
3. Fuel inlet, 1/2 in. NPT
4. Hose fitting
5. Plug
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