Providing the Generac GUARDIAN Generator with the proper fuel type and fuel pressure is critical to proper performance of the engine.  The GUARDIAN Generator units are shipped factory tested and adjusted using a natural gas (NG) fuel system.  If propane (LP) gas is preferred, contact this Authorized Service Dealer.  RECONFIGURING THE FUEL SYSTEM will be necesary to convert from NG to LP vapor.

OPERATING FUEL PRESSURE VAPOR SYSTEMS:  11" to 15" (H2O) water column.

Do not attempt to make modifications to any fuel-related system as severe personal injury and property damage may occur. 

VIEW GAS LINE INSTALLATION DIAGRAM

Please read more information on the dynamics of the fuel system.  Visit the following links.

http://www.ngsa.org/
http://www.npga.org/