Cooling And Ventilating Air; Gasoline Fuel System - Generac Power Systems 004709-0 Owner's Manual

Installation
Fuel lines and exhaust piping must not pen-
etrate into the vehicle living area.
2.3 COOLING AND VENTILATING
AIR
It is absolutely essential that an adequate flow of air for cooling,
ventilating and engine combustion be supplied to the generator set.
Without sufficient airflow, the engine/generator quickly overheats.
Such overheating can cause serious operating difficulties and also
may cause fire and personal injury. The installer must make sure
that sufficient air is available to the generator for cooling, ventilat-
ing and combustion. The installer also must provide for a path for
exhausting the cooling air to the exterior of a compartment, if so
equipped.

Never use discharged cooling air for heating
or permit such air to enter the vehicle inte-
rior. This air contains deadly carbon monox-
ide gas and other poisonous, flammable or
explosive gases.
2.3.1 GENERATOR AIRFLOW
Engine operation drives cooling fans for the two-stage cooling air
system. A pressure fan draws cooling air into the bottom right side
of the generator (Figure 2.9). This airflow cools the engine/generator
and electronic components. The second part of the cooling system,
a suction fan, draws air that is heated from a hot engine into a collec-
tor compartment at the left side of the unit. This heated air (although
cooler than exhaust muffler) is then deflected out the bottom toward
the ground.
Figure 2.9 – Airflow Through Engine/Generator
26
2.3.2 TESTING THE INSTALLATION
The manufacturer recommends testing the installation 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 regulations. 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

Gasoline is highly flammable, and its vapors
are explosive. Comply with all codes, stan-
dards 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 P R I M E
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)
C . B .
F U E L
3 0 A
A
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
INSPECT & CLEAN
PLUGS EVERY 100
HOURS. REPLACE PLUGS
EVERY 500 HOURS.
(IF NECESSARY)
CHANGE EVERY 400
HOURS. (OR ANNUALLY)
0D4511
0D3262
070185
072347
0D7515
0.8L/0.84QT
SAE VISCOSITY
30
15W-40
10W-30
5W-30