Fuel Conversion, 6Vsg - Kohler 6VSG Service Manual

Figure 5-25
1
1. Fuel lockoff (do not adjust)
2. Fuel inlet, 1/2 in. NPT
3. Inlet pressure check location
Figure 5-25 Fuel Regulator
5.8.3

Fuel Conversion, 6VSG

Two fuel connections on the fuel block allow field
conversion between natural gas and LPG. 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 natural
gas (NG) to LPG. See Figure 5-26 for the fuel system
component locations.
Procedure to Convert from NG to LPG
1. Press the OFF button on the generator set
controller.
2. Disconnect the 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 5-26.
6. Remove the hose fitting from the natural gas
outlet port in the fuel block. See Figure 5-26.
7. Remove the plug from the LPG port in the fuel
block. See Figure 5-26.
8. Clean the plug with a dry cloth or brush, apply
fresh pipe sealant, and install the plug into the
natural gas outlet port.
80 Section 5 Component Testing and Adjustment
2
3
9. Clean the hose fitting with a dry cloth or brush,
apply fresh pipe sealant to the threads, and install
the fitting into the LPG port.
Note: Do not adjust the fuel metering valves.
10. Slide the hose onto the hose fitting and secure it
with the clamp.
Figure 5-26
1
5
4
1. Fuel block
2. Fuel metering valves—factory-sealed, do not adjust
3. Fuel inlet, 1/2 in. NPT
4. Hose fitting
5. Plug
Figure 5-26 Fuel Block
11. Connect and turn on the new fuel supply.
KPS_090
GM71184
2
Natural gas
setup shown
3
KPS_091
GM66563
TP-6844 1/13