Reconfiguring The Fuel System; Engineadjustment - Briggs & Stratton 1768-0 Installation Manual

Briggs& Stratton Power Products Home Generator System
Installation Manual
RECONFIGURING THE
FUEL SYSTEM
The engineof your Home Generator System is factory
calibrated to run on natural gas (NG). It may also be
operated on liquefied petroleum (LP).There is no additional
hardware/equipment required to switch between either
fuel However, LP fuel inlet pressure must be between
I I and 14 incheswater column.
To reconfigure the fuel system for LP use:
• Set the AUTO/OFF/MANUAL switch to OFF.
• Set the generator's main circuit breaker OFF.
• Remove the 15Amp fuse.
• Activate the fuel transfer solenoid as follows:
I. Remove the"Oil Service" access panel.
2. Join the two-pin electrical connector shown in
Figure 17.
Engine Adjustment
It is commonly known that there are regional variancesin
the combustibility of natural gas.EachHGS unit isadjusted
at the factory for correct NG operation. If the generator
output voltageor frequency measuredduring initial
ElectricalCheck (paragraph#8 on page I S) is outsidethe
listed ranges,the combustibility of the gassupplied at the
installationsite may be substantially different
To adjust the enginefor this different fuel, proceed as
follows.
I.
2.
Remove the Air Intake accessdoor.
Remove the three M5 sheet metal screws that hold
the control panel wiring cover to the air intake guard
(Figure 18).
,J
Remove
Access
Plug
3. Reinstall the "Oil Service" access panel
• Reinstall the 15Amp fuse.
• Set the generator's main circuit breaker ON.
• Set the AUTO/OFF/MANUAL switch to AUTO.
The system is now ready to operate automatically using LP
fuel.With a fixed main jet for LP gas, there is no need to
perform any engine adjustments for LP operation.
3,
4.
Remove the six (MS) sheet metal screws that hold the
air intake guard to the engine impeller panel.
An accesshole is visible above the engine impeller
panel (see Figure 18).It wilt be covered with a plug.
Remove the plug to gain accessto the adjustment
screw.
NOTE: The mixture adjustment screw is the brass slotted
screw in the center of the aluminum boss directly visible in
the access hole.
18