Exhaust System - Generac Power Systems 004709-0 Owner's Manual

2.4.2.2 Flexible Fuel Line
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 J30R7,
"Standard for Fuel and Oil Hose." It must be
approved for use with gasoline and low perme-
ability.
• The hose should be at least 6 inches (152 mm)
longer than is needed to prevent the hose from
rupturing if the generator shifts or settles.
2.5

EXHAUST SYSTEM

The generator exhaust system must be safely and
properly installed. Only approved mufflers and other
exhaust system parts must be used. A properly
installed exhaust system must be vapor tight, quiet
and completely safe.
DANGER

The generator engine gives off DEADLY carbon
monoxide gas through its exhaust system. This
dangerous gas, if breathed in sufficient con-
centrations, can cause unconsciousness or even
death. Never operate the generator set with
the vehicle inside any garage or other enclosed
area. DO NOT OPERATE THE GENERATOR IF THE
EXHAUST SYSTEM IS LEAKING OR HAS BEEN
DAMAGED. SYMPTOMS OF CARBON MONOXIDE
POISONING ARE (a) inability to think coher-
ently; (b) vomiting; (c) twitching muscles; (d)
throbbing temples; (e) dizziness; (f) headaches;
(g) weakness; and (h) sleepiness. IF FEELING
ANY OF THESE SYMPTOMS, MOVE INTO FRESH
AIR IMMEDIATELY. IF SYMPTOMS PERSIST, GET
MEDICAL HELP. Do not operate the generator
until its exhaust system has been inspected and
properly repaired.

Never tee the generator engine exhaust pipe
into the vehicle engine exhaust piping. This
causes excessive back pressure on the generator
engine. Also, water from one engine can dam-
age the other engine.
28
Section 2 – Installation
Recreational Vehicle Generator
2.5.1 SPARK ARRESTOR
This spark arrestor assembly meets code and stan-
dard requirements of the U.S. Forest Service. Use
only mufflers and parts approved by the manufactur-
er. Any person(s) installing an unapproved muffler, or
an unapproved exhaust system part, or modifying an
exhaust system in any way that might cause a hazard,
is liable for any damage, injury or warranty expense
that might be caused by such unapproved installation
or modification.
Failure to provide and maintain a spark arrestor may
be in violation of the law. If this generator is used on
any forest covered, brush covered or grass covered
unimproved land, provide a spark arrestor. The vehi-
cle owner or operator must maintain this device in
good condition. In the state of California, the preced-
ing is required by law (Section 4442 of the California
Public Resources Code). Other states may have simi-
lar laws. Federal laws apply on federal lands.
When installing/replacing the tailpipe or spark arres-
tor components, verify that the tailpipe has a hole
to securely fasten the spark arrestor components
(see Figures 2.11 and 2.12). Use only manufacturer
supplied hardware. Substitution of parts may cause
damage to the screen or a loose fit to the tailpipe.
Figure 2.11 - Spark Arrestor
TAILPIPE
P/N 0E0683
RETAINING
SCREW P/N 056892
Figure 2.12 — Spark Arrestor Installation
27.4 [1.08"] I.D.
40 [1.58"]
SPARK ARRRESTOR
SCREEN P/N 089680
5.5 [7/32"] DRILL
BOTTOM SIDE ONLY