24 TP-7091 4/23
2.2 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 dealer can convert the fuel system.
After converting the fuel system, change the Fuel Type setting on the controller. See the Operation Manual for instructions to
change settings at the controller, or use a personal (laptop) computer and Kohler
©
SiteTech™ software to change the setting.
A revised fuel system was implemented in February, 2021. The fuel system can be identified by comparing the regulator and
solenoid valve with the illustrations in the following sections.
The original fuel system uses fuel orifice fittings to control the fuel flow for natural gas (NG) or LPG fuels. The original system
uses a fuel regulator and a separate fuel solenoid valve. The revised fuel system uses a fuel regulator with a fuel selector valve
and an integrated fuel solenoid valve. The next sections provide illustrations and instructions to convert the fuel on generator
sets with the original and revised designed.
Rating Change
Converting the fuel will change the generator set rating. See the generator set specification sheet for ratings with natural gas
and LP. Order a new nameplate with the updated rating and fuel information from an authorized dealer, if necessary. Provide
the following information from the original nameplate:
• Fuel (original and new)
Attach the new nameplate over the old one. Do NOT cover the UL listing information on the old nameplate.
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.
Disabling the generator set. Accidental starting can cause severe injury or death. Before working on the generator set or
equipment connected to the set, disable the generator set as follows: (1) Place the generator set start/stop switch in the STOP
position. (2) Disconnect the power to the battery charger, if equipped. (3) Remove the battery cables, negative (–) lead first.
Reconnect the negative (–) lead last when reconnecting the battery. Follow these precautions to prevent the starting of the
generator set by the remote start/stop switch.
Explosive fuel vapors.
Can cause severe injury or death.
Use extreme care when handling, storing, and using fuels.
Explosive fuel vapors can cause severe injury or death. Take additional precautions when using the following fuels:
Propane (LPG)—Adequate ventilation is mandatory. Because propane is heavier than air, install propane gas detectors low in
a room. Inspect the detectors per the manufacturer’s instructions.
Natural Gas—Adequate ventilation is mandatory. Because natural gas rises, install natural gas detectors high in a room. Inspect
the detectors per the manufacturer’s instructions.
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