Briggs & Stratton 040395-00 Operator's Manual page 22

Fuel Conversion
The engine of your generator system is factory calibrated
to run on natural gas (NG) or on liquefied petroleum (LP)
vapor, To convert to either fuel, follow these steps:
NOTICE Units are set to NG at the factory'.
1, insert key into lock of front panel. Gently push down
on roof above the lock to aid in turning the key, Turn
key one quarter turn clockwise,
2, Lift roof to the open position.
3, Press the control board OFF button,
4, Remove 15 Amp fuse from control panel,
5, Removethe rear panel,
6, Locate the fuel selector switch (A), located on top of
the fuel regulator (B). Using a 5 mm Allen wrench, turn
the selector switch to either LP or NG,
7, Install tamper proof plug supplied with unit.
Hug fits over fuel selector switch with convex
side facing out. Secure plug with drop of
cyanoacrylate(super) glue,
8, Reinstall the rear panel,
9, Reinstall 15 Amp fuse in control panel,
10, Press the control board AUTO button.
S
o
\
I
22