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Generac Power Systems 004709-0 Owner's Manual: Gasoline Fuel System

Air-cooled recreational vehicle generator.
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2.3.2 TESTING THE INSTALLATION
The manufacturer recommends testing the installa-
tion to be sure adequate cooling airflow is available to
the unit before placing the unit into service. If the unit
shows signs of overheating, enlarge the air openings.
Never place a unit into service until absolutely certain
that cooling and ventilation is adequate.
Test the installation, especially if bringing in air
from below the generator set.
2.4

GASOLINE FUEL SYSTEM

The installation of a gasoline fuel system (Figure
2.10) for a recreational vehicle generator set must
comply with applicable codes, standards and regula-
tions. The entire fuel system must be completely free
of leaks. There must be no possibility of gasoline
vapors entering the vehicle interior.
Figure 2.10 – Generator Fuel System
GENERAC
OHVI
POWERED
GENERAC OHVI INDUSTRIAL ENGINE
QUIETPACT 40G
TM
RV SERVICE LOCATOR:
1.800.333.1322
DANGER
Gasoline is highly flammable, and its vapors are
explosive. Comply with all codes, standards and
regulations pertaining to gasoline fuel systems
used in recreational vehicle generators. Properly
install and maintain the fuel system and keep it
entirely free of leaks. Gasoline vapors must not
enter the vehicle interior.
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.
NOTE:
CONTROL CENTER
S T A R T
S T O P
F U S E
7.5
S E R V IC E A C C E S S
AIR FILTER LOCATED BEHIND PANEL.
MAINTENANCE SCHEDULE
OIL LEVEL:
AIR FILTER:
OIL & OIL FILTER:
SPARK PLUGS:
FUEL FILTER:
REPLACEMENT INFORMATION
PREFILTER P/N:
AIR FILTER P/N:
OIL FILTER P/N:
SPARK PLUG P/N:
FUEL FILTER P/N:
OIL CAPACITY WITH FILTER:
TEMPERATURE
32˚F AND HIGHER
10˚F TO 100˚F
0˚F TO 80˚F
-20˚F TO 50˚F
WHEN SERVICE OR PARTS ARE NEEDED IN
THE USA OR CANADA, CONTACT THE GENERAC
SERVICE LOCATOR AT 1-800-333-1322.
Fuel Pump & Fuel Filter
(Behind Access Panel & Air Filter)
Recreational Vehicle Generator
2.4.1 FUEL TANK
Either the generator must share the vehicle engine's
fuel tank, or install a separate fuel tank for the
generator set. All fuel tanks installed on the vehicle
must be constructed, installed and restrained so they
comply with applicable codes, standards and regula-
tions.
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 2 to 3 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 operating
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
C . B .
F U E L
3 0 A
the vehicle engine.
P R I M E
A
2.4.2 GENERATOR FUEL SUPPLY LINE
P A N E L
CHECK DAILY
CLEAN PREFILTER
EVERY 100 HOURS.
*
REPLACE ELEMENT
EVERY 250 HOURS.
*
CHANGE EVERY 100
HOURS. (OR ANNUALLY)
*
*
PERFORM MORE OFTEN IN DUSTY CONDITIONS
2.4.2.1 Rigid Fuel Lines
INSPECT & CLEAN
PLUGS EVERY 100
HOURS. REPLACE PLUGS
EVERY 500 HOURS.
(IF NECESSARY)
CHANGE EVERY 400
HOURS. (OR ANNUALLY)
0D4511
0D3262
070185
Those lines used to supply fuel from a tank to the
072347
0D7515
0.8L/0.84QT
SAE VISCOSITY
30
15W-40
generator must comply with applicable codes, stan-
10W-30
5W-30
dards and regulations. The following general rules
apply to rigid fuel lines:
Rigid lines should be of annealed, seamless, drawn
aluminum or steel.
Lines and fittings must comply with SAE J512F ,
"Standard Automotive Fittings," or with ANSI
B126.26 (latest edition).
Route the fuel line so that at least 2 inches (51 mm)
of clearance is maintained between the line and
any exhaust system parts.
Do not attach electrical wiring to fuel lines. Route
the wiring so it cannot come into contact with any
fuel line.
Route fuel lines so if they leak, fuel does not drip
onto any electrical or exhaust system parts.
Use nonferrous metal straps without sharp edges
to secure fuel lines.
Section 2 – Installation
27

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