Lp Gas Fuel System - Generac Power Systems 004702-0, 004703-0, 004704-0, 004705-0, 004706-0, 004707-0 Owner's Manual

Figure 6.10 – Generator Fuel System
Fuel Line
Factory installed generator fuel system components
include (a) fuel filter, (b) 12-volt DC electric pump,
(c) engine carburetor, and (d) interconnecting lines
and fittings. Connect a fuel supply line to the fuel
filter inlet. Use a flexible length of approved fuel hose
between the fuel filter inlet connection and rigid fuel
lines.
6.4.1 FUEL TANK
Either the generator must share the vehicle engine's
fuel tank, or a separate fuel tank for the generator
set must be installed. All fuel tanks installed on the
vehicle must be constructed, installed and restrained
so they comply with applicable codes, standards and
regulations.
If the generator is to share the vehicle engine's tank,
separate fuel pickup tubes are required for the engine
and the generator. The manufacturer recommends
that the fuel pickup tube be two to three inches (51
to 76 mm) shorter than the vehicle engine's pickup
tube. This prevents the generator from depleting the
entire fuel supply during prolonged generator operat-
ing periods.

Do NOT tee the generator fuel supply line
into the vehicle engine fuel supply line. If this
is done, the generator will be starved of fuel
when both engines are operating at the same
time. Also, while the vehicle engine is not run-
ning, generator operation may drain the vehicle
engine supply line, making it difficult to start
the vehicle engine.
6.4.2 GENERATOR FUEL SUPPLY LINE
6.4.2.1 Rigid Fuel Lines
Those lines used to supply fuel from a tank to the
generator must comply with applicable codes, stan-
dards and regulations. The following general rules
apply to rigid fuel lines:
• Rigid lines should be of annealed, seamless, drawn
• Lines and fittings must comply with SAE J512F ,
Fuel Pump
(Behind Access
• Route the fuel line so that at least 2 inches (51 mm)
Cover)
Fuel Filter
• Do not attach electrical wiring to fuel lines. Route
(Side of Unit)
• Route fuel lines so if they leak, fuel does not drip
• Use nonferrous metal straps without sharp edges
Use an approved flexible length of fuel hose between
the generator fuel inlet connection and rigid fuel
lines. This prevents breaking of the line caused by
vibration, shifting, settling or movement. The follow-
ing rules apply:
• The flexible hose must comply with SAE J30B,
• The hose should be at least 6 inches (152 mm)
6.5

The LP powered range of generators are fitted with a
nonadjustable, factory set system. These systems are
tamper-proof to meet 1997 California Air Resources
Board requirements for engine emission.
Model
Quietpact 55LP
Quietpact 65LP
Quietpact 75LP
Section 6 – Installation
Recreational Vehicle Generators
aluminum or steel.
"Standard Automotive Fittings," or with ANSI
B126.26 (latest edition).
of clearance is maintained between the line and
any exhaust system parts.
the wiring so it cannot come into contact with any
fuel line.
onto any electrical or exhaust system parts.
to secure fuel lines.
6.4.2.2 Flexible Fuel Line
"Standard for Fuel and Oil Hose." It must be
approved for use with gasoline.
longer than is needed to prevent the hose from
rupturing if the generator shifts or settles.

LP GAS FUEL SYSTEM

DANGER
LP gas is highly EXPLOSIVE. The gas is heavier
than air and tends to settle in low areas. Even
the slightest spark can ignite it and cause and
explosion. Only competent, qualified people
should be allowed to install, test, adjust or ser-
vice an LP gas fuel system. Install the optional
fuel system in compliance with applicable codes,
standards and regulations. After the installation,
do not do anything that might render the sys-
tem in noncompliance with applicable codes and
standards.
6.5.1 LP FUEL CONSUMPTION (LB./HOUR)
Idle
2.34
2.34
2.34
50% Load 100% Load
3.96 5.07
4.20 6.50
4.44 8.75
27