Briggs & Stratton 1535-1, 1461-2 User Manual

For Models 1461-2 and 1535-1 Manual No. 189141 Revision 2 (12/04/2001)

Visit our Generac website: www.generac-portables.com

NOT INTENDED FOR USE AS PRIMARY POWER IN PLACE OF UTILITY

OR IN LIFE-SUPPORT APPLICATIONS

OWNER’S MANUAL

8000/10000 Watt

Backup Power System

with Automatic Power Transfer Switch

Briggs & Stratton Power Products Backup Power System

Owner’s Manual

2

TABLE OF CONTENTS

TABLE OF CONTENTS . . . . . . . . . . . . . . . . . . . . . . . . . 2

SAFETY RULES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Installation Assistance . . . . . . . . . . . . . . . . . . . . . . . . 4

For the Home or Business Owner: . . . . . . . . . . 4

For the Installing Dealer/Contractor: . . . . . . . . . 4

OWNER ORIENTATION . . . . . . . . . . . . . . . . . . . . . . . . 4

Fuel Factors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Power Decrease at High Altitude or High

Temperature . . . . . . . . . . . . . . . . . . . . 5

Generator Location . . . . . . . . . . . . . . . . . . . . . . . . . 5

Generator Clearances . . . . . . . . . . . . . . . . . . . . . . . 5

Essential Circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Essential Circuit Selection . . . . . . . . . . . . . . . . . 7

UNPACKING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Delivery Inspection . . . . . . . . . . . . . . . . . . . . . . . . . 8

Shipment Contents . . . . . . . . . . . . . . . . . . . . . . . . . . 8

KNOW YOUR BACKUP GENERATOR . . . . . . . . . . . . . 9

KNOW YOUR SYSTEM CONTROL PANEL . . . . . . . . . 10

Access Doors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

To remove an access door: . . . . . . . . . . . . . . . 11

To install an access door: . . . . . . . . . . . . . . . . . 11

BEFORE INITIAL START-UP . . . . . . . . . . . . . . . . . . . . . 12

Engine Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Oil Considerations . . . . . . . . . . . . . . . . . . . . . 12

Battery Connection . . . . . . . . . . . . . . . . . . . . . . . . 12

Gaseous Fuel System . . . . . . . . . . . . . . . . . . . . . . . 12

The AUTO/OFF/MANUAL Switch . . . . . . . . . . . . . 12

AUTOMATIC OPERATION . . . . . . . . . . . . . . . . . . . . . 13

Checking Automatic Operation . . . . . . . . . . . . . . . 13

Stopping the System . . . . . . . . . . . . . . . . . . . . . . . . 13

Setting Exercise Timer . . . . . . . . . . . . . . . . . . . . . . 13

MANUAL OPERATION . . . . . . . . . . . . . . . . . . . . . . . . 14

Transfer to Generator Power . . . . . . . . . . . . . . . . . 14

Transfer Back to Utility Power . . . . . . . . . . . . . . . . 14

SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Fault Detection System . . . . . . . . . . . . . . . . . . . . . 15

Reset Fault Detection System . . . . . . . . . . . . . 15

No Blinks - ‘Dead’ Unit . . . . . . . . . . . . . . . . . . 15

Low Battery Voltage . . . . . . . . . . . . . . . . . . . . . 15

Low Oil Pressure . . . . . . . . . . . . . . . . . . . . . . . 15

Low Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Engine Fail To Start . . . . . . . . . . . . . . . . . . . . . 16

Low Frequency . . . . . . . . . . . . . . . . . . . . . . . . 16

Engine Overspeed . . . . . . . . . . . . . . . . . . . . . . 16

Oil Temperature High . . . . . . . . . . . . . . . . . . . 16

Power During Fault Condition . . . . . . . . . . . . . . . . 16

Maintenance Schedule . . . . . . . . . . . . . . . . . . . . . . 17

Generator Maintenance . . . . . . . . . . . . . . . . . . . . . 17

To Clean the Generator: . . . . . . . . . . . . . . . . . 17

Engine Maintenance . . . . . . . . . . . . . . . . . . . . . . . . 18

Checking Oil Level . . . . . . . . . . . . . . . . . . . . . 18

Changing the Oil and Oil Filter . . . . . . . . . . . . 18

Replace the Spark Plugs . . . . . . . . . . . . . . . . . . 19

Service Air Cleaner . . . . . . . . . . . . . . . . . . . . . 19

Inspect Spark Arrester Screen . . . . . . . . . . . . . 20

Engine Governed Speed . . . . . . . . . . . . . . . . . . 20

Valve Lash . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Carburetor Adjustments . . . . . . . . . . . . . . . . . 20

If You Call the Factory: . . . . . . . . . . . . . . . . . . . . . . 20

STORAGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . 21

DIAGRAMS, EXPLODED VIEWS, PARTS LISTS. . . . . 22-42

EMISSION CONTROL SYSTEM WARRANTY . . . . . . . 43

POWER SYSTEM WARRANTY . . . . . . . . . . . . . . . . . . . 44

This is the safety alert symbol. It is used to alert you to potential personal injury hazards.

Obey all safety messages that follow this symbol to avoid possible injury or death.

Briggs & Stratton Power Products Backup Power System

Owner’s Manual

3

SAFETY RULES

• Your Briggs & Stratton Backup Power System produces
dangerous electrical voltages that can cause a fatal
electrical shock.Avoid contact with bare wires, terminals
and connections at all times while the unit is running.
Ensure that all the appropriate covers, guards and
barriers are in place before operating the generator. If
you must work around a unit while it is operating, stand
on an insulated dry surface to reduce shock hazard.

• In case of an accident caused by electrical shock
immediately shut down the source of electrical power. If
this is not possible, attempt to free the victim from the
live conductor.

DANGER! Avoid direct contact with the

victim. Use a non-conducting implement, such as a

rope or board to free the victim from the live
conductor. If the victim is unconscious, apply first aid
and get immediate medical help.

• Your Backup Power System is powered by gaseous fuel.
Liquid Propane (LP) or natural gas is extremely
Explosive! Do Not smoke around the generator.Wipe
up any oil spills immediately. Ensure that no combustible
materials are left in the generator compartment. Keep
the area near the generator clean and free of debris.

• Do Not use the generator or any of its parts as a step.
Stepping on the unit can stress and break parts.This may
result in dangerous operating conditions from leaking
exhaust gases, fuel leakage, oil leakage, etc.

CAUTION! After the installation of your Backup

Power System is complete, the generator may crank
and start without warning any time there is a power
interruption.To prevent possible injury, before
working on the equipment, always set the
AUTO/OFF/MANUAL switch to OFF and remove
the 15 Amp fuse.

• Do Not handle any kind of electrical device while
standing in water.Avoid electrical devices while barefoot
or while hands or feet are wet.

• Remain alert at all times while working on this

equipment. Never work on the equipment when you are
physically or mentally fatigued.

• An adequate, unobstructed flow of cooling and ventilating

air is critical for generator operation. Do Not alter the
installation or permit even partial blockage of ventilation
provisions, as this can seriously affect safe operation of
the generator.The Oil Service door and/or the Control
Panel door must be installed whenever the unit is
running.

• Before performing any maintenance on the generator,
remove the 15 Amp fuse AND disconnect the battery
NEGATIVE, NEG, or (-) cable.

• Do Not operate engine if smell of fuel is present or
other explosive conditions exist.

• Do Not tamper with governor springs, links or other
parts to increase engine speed.

• Do Not touch hot muffler, engine cylinder, or engine
exhaust port which can cause burns.

• Do Not start engine with air cleaner or air cleaner
cover removed.

CAUTION! Despite the safe design of the

Backup Power System, operating this equipment
imprudently, neglecting its maintenance or being
careless can cause possible injury or death. Permit
only responsible and capable persons to operate
and/or maintain this equipment.

NOTE:Your generator is equipped with a spark arrester
muffler. The spark arrester must be maintained in effective
working order by the owner/operator. In the State of
California, a spark arrester is required by law (Section 4442
of the California Public Resources Code). Other states may
have similar laws. Federal laws apply on federal lands.

The manufacturer cannot possibly anticipate every possible
circumstance that might involve a hazard.The warnings in
this manual, and the tags and decals affixed to the unit are,
therefore, not all-inclusive. If you use a procedure, work
method or operating technique that the manufacturer does
not specifically recommend, you must satisfy yourself that it
is safe for you and others.You must also make sure that the
procedure, work method or operating technique that you
choose does not render the generator unsafe.

Only qualified electricians and gaseous fuel

technicians should attempt installation of this

system, which must strictly comply with

applicable codes, standards and regulations.

WARNING!

Briggs & Stratton Power Products Backup Power System

Owner’s Manual

4

INTRODUCTION

Congratulations on your purchase of a Briggs & Stratton

Backup Power System (BPS).Your BPS was designed to
provide automatic auxiliary electrical power for the
duration of normal power interruption. It is not intended
for use as primary power in place of utility nor for use in
life-support applications.The generator unit has been
engineered and tested to exacting standards of
performance and reliability and is equipped with a UL®
listed Automatic Power Transfer Switch.

Generac Portable Products has made every effort to
provide for a safe, streamlined and cost-effective
installation. Because each installation is unique, it is
impossible to know of and advise the trade of all
conceivable procedures and methods by which installation
might be achieved. Neither could we know of possible
hazards and/or the results of each method or procedure.
For these reasons,

Only current qualified electrical and

plumbing contractors should attempt

BPS installations.

Installations must strictly comply with

all applicable codes, industry standards

and regulations.

Your Briggs & Stratton Backup Power System is supplied
with this “Owners Manual” and a separate “Installation
Manual” (Generac part number 184957).These are both
important documents and should be retained by the owner
after the installation has been completed.

Installation Assistance

For the Home or Business Owner:

To help you make informed choices and communicate
effectively with your installation contractor(s),

Read and understand the

Owner Orientation Section of this manual

BEFORE

contracting or starting

your BPS installation.

To arrange for proper installation, contact the store at
which you purchased your Briggs & Stratton Backup Power
System, your dealer,or your utility power provider.

The BPS Warranty is VOID unless the system

is installed by certified electrical and

plumbing professionals.

For the Installing Dealer/Contractor:

For most applications, the Installation manual contains all

the information required to properly install and start the
Backup Power System.This Owner’s Manual describes
essential circuit selection, routine operation and owner
maintenance procedures.

If you need more information, call 920-674-3750,

extension 2716, between 8:00 AM and 5:00 PM CT.

The Emission Control System for this generator is
warranted for standards set by the U.S. Environmental
Protection Agency and by the California Air Resources
Board (CARB). For warranty information refer to the back
of this Owner’s manual.

OWNER ORIENTATION

This section provides Backup Power System owners with
the information necessary to achieve the most satisfactory
and cost effective installation possible.

The illustrations are for typical circumstances and are
meant to familiarize you with the installation options
available with your Backup Power System.A thorough
understanding of these options will provide fundamental
control over the cost of your installation, as well as ensure
your final satisfaction and security.

Local codes, appearance, noise levels, fuel types, and
distances are the factors that must be considered when
negotiating with an installation professional. Remember that
as the distance from the existing electrical service and
gaseous fuel supply increases, equal compensations in piping
and wiring materials must be allowed for.This is necessary
to comply with local codes and overcome electrical voltage
drops and gaseous fuel pressure drops.

The factors mentioned above will have a direct
affect on the overall price of your Backup Power
System installation.

Briggs & Stratton Power Products Backup Power System

Owner’s Manual

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NOTE: In some areas you may need to acquire electrical
permits for installing the Backup Power System,building
permits for installing gas lines, and permits for noise
allowances.Your installer should check your local codes
AND obtain the permits before installing the system.

Fuel Factors

An important consideration affecting the entire installation
is the type of fuel used by your Backup Power System.The
system was factory tested and adjusted using natural gas as
a fuel. Liquid propane (LP) may also be used as a fuel (see
the Installation Manual).

Although there are specific factors that are inherent to
each of these fuels, your location and the duration of
possible utility interruptions should guide your selection of
fuel type. For urban installations, Natural Gas (if available)
should be your fuel of choice. For remote installations, a
Liquefied Petroleum (LP) tank might better meet your
needs.

For proper engine function, the following fuel guidelines are
recommended:

• Use clean, dry fuel, free of moisture or any particulate
material. Using fuels outside the following recommended
values may cause performance problems.

In engines set up to run on propane (LP) gas,
commercial grade HD5 propane with a minimum fuel
energy of 2500 BTUs/ft

3

with maximum propylene

content of 5% and butane and heavier gas content of

2.5% and minimum propane content of 90%.

CAUTION!This equipment is equipped with an

automatic safety gas “fuel shut-off” valve. Do Not
operate the equipment if the “fuel shut-off” valve is
missing or inoperative.

Power Decrease at High Altitude or High
Temperature

Air density is less at high altitudes, resulting in less available
engine power. Specifically, engine power will decrease 3.5%
for each 1,000 feet (300 meters) above sea level and 1% for
each 10° F (5.6°C) above 77°F (25°C). Make sure you and
your installer consider these factors when determining
total generator load.

Generator Location

The actual physical location of your backup generator has a
direct affect on:

1. The amount of plumbing required to fuel your
generator.

2. The amount of wiring required to control and connect
your generator.

NOTE: Specific location guidelines are discussed in the
Installation Manual.Acquaint yourself with that information
and confer with your installer. Be sure to ask how your site
might affect installation costs and compliance with local
codes and standards.

Generator Clearances

The generator enclosure must be a minimum of 3 ft.
(92 cm) from combustible material (NFPA 37). Leave at
least 3 ft. (92 cm) all around the enclosure for access to the
inside of the enclosure (NEC Art. 110-26a, Art. 110-26b).

The unit’s exhaust port must be at least 5 ft. (152 cm) from
any building opening (window, door,vent etc.), and the
exhaust must not be able to accumulate in any occupied
area (Figure 1).

Figure 1 — Backup Power System Clearances

Exhaust port must be

5 ft (152 cm) minimum

distance from building

openings

Exhaust

Port

Briggs & Stratton Power Products Backup Power System

Owner’s Manual

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Figure 2 identifies system components and shows typical
installation details.Variations to this illustration are related
to code issues, piping distances and materials.

Essential Circuits

As a Backup Power System owner, it is important that you
clearly identify the circuits in your building that are
"essential" to you. Because the Backup Power System is
equipped with an Automatic Transfer Switch, your selection
of essential circuits will be transferred to the Backup
Power System within 15 seconds (+/- 5 seconds).

It is important that your installer understand which

circuits
you want to include as "Essential Circuits". Depending on
the power consumed by these circuits,most or all of them

can be switched to the Backup Power System for the
duration of normal power interruption.

The essential circuits are gathered in a special circuit
breaker box,referred to as the Essential Circuit “sub­panel”, that is connected by conduit to the transfer switch.
This breaker box is provided by the installer because it
allows him to use the brand that is most compatible with
your existing electrical service components.

The wattage reference guide shown in Figure 3 will assist
you with your decision-making process.It provides the
wattage used by many ordinary household devices. Use it
as a guide when selecting your essential circuits. Review
this information with your installer and ask about any
technical considerations that might affect the cost of your
installation.

Power Lead

Connections

NEUTRAL to White wire

GND to chassis

Control Signal

Connections

Automatic

Power

Transfer

Switch

Rear of

Control

Panel

Backup Power

System Generator

Power Leads

Signal Leads

Main

Distribution

Panel

Essential

Circuit

Sub-panel

Utility Power

Meter

Figure 2 — Typical Installation Diagram for Backup Power System

Briggs & Stratton Power Products Backup Power System

Owner’s Manual

7

Essential Circuit Selection

When selecting the essential circuits that will be switched
to “Backup Power,” it is important that the sum of the
combined circuit loads does not exceed the
wattage/amperage capacity of the generator. To help you
with your selection of essential circuits, please consider the
following:

Add up the total wattage of all electrical devices to be
connected at one time.This total should NOT be
greater than the generator’s wattage capacity.

The rated wattage of lights can be taken from light bulbs.
The rated wattage of tools, appliances and motors can
usually be found on a data plate or decal affixed to the
device.

If the appliance, tool or motor does not give wattage,
multiply 120 Volts times the ampere rating to determine
watts (Volts x Amps = Watts).

Some electric motors (induction types) require about
three times more watts of power for starting than for
running.This surge lasts for only a few seconds. Be sure
you allow for this high starting wattage when selecting
electrical devices that will be energized by the backup
power system:

Figure the watts required to start the largest motor.
Add that to the total running watts of all other

connected loads.

This Briggs & Stratton Backup Power System
complies with the following “stationary standby
power rating”:

The standby power rating is applicable for supplying
emergency power for the duration of normal power
interruption. No sustained overload capability is available
for this rating.

This rating is applicable to installations served by a
reliable normal utility source.This rating is only applicable
to variable loads with an average load factor of 80% of
the standby rating for a maximum of 500 hours of
operation per year.The standby rating is only applicable
for emergency and standby power where the generator
set serves as the backup to the normal utility source.

Use the “Wattage Reference Guide” provided and mark
those circuits you consider “critical” or “essential”. Make
sure you and your installer consider the system’s altitude
above sea level and the ambient temperature range when
determining total generator load.

Device

Running

Watts



Air Conditioner (12,000 Btu)* 1700



Air Conditioner (24,000 Btu)* 3800



Air Conditioner (40,000 Btu)* 6000



Battery Charger (20 Amp) 500



Circular Saw (6-1/2") 800 to 1000



Clothes Dryer (Electric)* 5750



Clothes Dryer (Gas)* 700



Clothes Washer* 1150



Coffee Maker 1750



Compressor (1 HP)* 2000



Compressor (1/2 HP)* 1400



Compressor (3/4 HP)* 1800



Curling Iron 700



Dehumidifier* 650



Electric Blanket 400



Electric Range (per element) 1500



Electric Skillet 1250



Freezer* 700



Furnace Fan (3/5 HP)* 875



Garage Door Opener* 500 to 750



Hair Dryer 1200



Hand Drill 250 to 1100



Iron 1200



Jet Pump* 800



Light Bulb 100



Microwave Oven 700 to 1000



Milk Cooler* 1100



Oil Burner on Furnace 300



Oil Fired Space Heater (140,000 Btu) 400



Oil Fired Space Heater (30,000 Btu) 150



Oil Fired Space Heater (85,000 Btu) 225



Radio 50 to 200



Refrigerator 700



Slow Cooker 200



Submersible Pump (1 HP)* 2000



Submersible Pump (1/2 HP)* 1500



Submersible Pump (1-1/2 HP)* 2800



Sump Pump* 800 to 1050



Table Saw (10")* 1750 to 2000



Television 200 to 500



Toaster 1000 to 1650

Figure 3 — Wattage Reference Guide

*Allow three (3) times listed watts for starting device

Briggs & Stratton Power Products Backup Power System

Owner’s Manual

8

UNPACKING

Refer to the Installation Manual for detailed unpacking
instructions, if desired.

Delivery Inspection

After removing the carton, carefully inspect the Backup
Generator and Automatic Power Transfer Switch
components for any damage that may have occurred during
shipment.

IMPORTANT: If loss or damage is noted at time of
delivery, have the person(s) making delivery note all damage
on the freight bill and affix his signature under the
consignor's memo of loss or damage. If loss or damage is
noted after delivery, separate the damaged materials and
contact the carrier for claim procedures.Missing or
damaged parts are not warranted.

Shipment Contents

The Backup Power System is supplied with:

• Backup Power generator

• Pre-attached mounting pad

• Automatic Power Transfer switch

• One 18” flexible fuel hook-up pipe

• Installation manual

• Owner’s manual

• Installation checklist

• Three access door keys

• Four lifting hole plugs

• Oil fill spout

• Touch-up paint

• One spare 15 Amp fuse

Briggs & Stratton Power Products Backup Power System

Owner’s Manual

9

15 Amp Fuse — Protects the DC control circuits.
Air Cleaner — Uses a dry type filter element and foam

precleaner to limit the amount of dirt and dust drawn into
the engine.

Battery — 12 Volt DC, 18 Amp-Hour sealed battery
provides power to start the engine. Battery receives trickle
charge whenever generator is not running.

Control Panel — Used for various test,operation and
maintenance functions. See “KNOW YOUR SYSTEM
CONTROL PANEL” on the next page.

Engine Label — Identifies engine model and type.
Exhaust Port — High-performance muffler lowers engine

noise to comply with most residential codes.

Oil Dip Stick — Used to check the engine oil level.
Oil Drain Hose — Provided to facilitate oil changing.
Oil Fill Cap — Remove to service the engine with

recommended oil.

Oil Filter — Filters engine oil to prolong system life.
Unit Data Decal — Identifies unit by serial number.

KNOW YOUR BACKUP GENERATOR

Read this owner’s manual and safety rules before operating your generator.

Compare the illustrations with your generator to familiarize yourself with the locations of various controls and
adjustments. Save this manual for future reference.

Air Cleaner

Oil

Filter

Battery Door Opening

Control Panel Door Opening

Unit Data Decal

Oil Service Door Opening

Exhaust

Port

Oil Dip Stick

Fuel Inlet

Control Panel

(see page 10)

Battery

Oil
Drain
Hose

Oil Fill Cap

15 Amp Fuse

Engine Label

Briggs & Stratton Power Products Backup Power System

Owner’s Manual

10

Hour Meter

Circuit

Breaker

Set Exercise

Switch

AUTO/OFF/MANUAL

Switch

Diagnostic

LED

15 Amp

Fuse

15 Amp Fuse — Protects the Backup Power System DC
control circuits. If the fuse has ‘blown’ (melted open) or
was removed, the engine cannot crank or start. Replace the
fuse using only an identical BUS AGC 15A fuse.

AUTO/OFF/MANUAL Switch — This three-position
device is the most important control on the system and is
used as follows:

•“AUTO” position is the normal operating position. If a

utility power outage is sensed, the system will start the
generator, let it reach stable operating speed, then
connect generator power to the sub-panel.When utility
power is restored, the system reconnects utility power
to the sub-panel, lets the engine stabilize internal
temperatures, shuts off the generator,and waits for the
next utility power outage.While waiting, it maintains
battery with trickle charge.

•“OFF” position turns off running generator, takes system

out of Automatic mode and resets any detected faults.

•“MANUAL” position starts the engine but does not

disconnect the sub-panel from utility power. It is used for
maintenance or diagnostic functions.

Circuit Breaker — Protects the system from shorts and
other over-current conditions. Must be ON to supply
power to the Automatic Transfer Switch.

Diagnostic LED — Used for troubleshooting operational
problems with the Backup Power System.All fault
conditions are described in the section “Fault Detection
System”.

Hour Meter — The hour meter records the total number
of hours the generator has been running and is used to
schedule maintenance tasks.

Set Exercise Switch — Used to set the exercise cycle
start time and day-of-the-week. Exercise cycle only occurs
in AUTO mode.

KNOW YOUR SYSTEM CONTROL PANEL

Compare this Control Panel illustration with your generator to familiarize yourself with the location of these important
controls:

Briggs & Stratton Power Products Backup Power System

Owner’s Manual

11

Access Doors

The Backup Power System is equipped with an enclosure
that has four access doors (Figure 4).The doors are named
for a significant component located behind them. Starting
with the side that has the fuel connection and proceeding
clockwise, the doors are named:

• Oil Service door

• Air Intake door

• Control Panel door

• Battery door
Each backup power system is equipped with three identical

keys.These keys fit the locks that secure the oil service and
control panel doors.

CAUTION! Do Not operate the backup generator

unless the Oil Service and/or Control Panel doors are
installed. Failure to do so will cause overheating.

To remove an access door:

1. Insert a key into the lock of the access door you wish
to remove and turn one quarter turn clockwise.

NOTE:The key is retained in the lock when the locks are
open.

2. Grasp the door’s lift handle and pull the door upwards
until the security pins are free of the lower base.

3. With the security pins free, pull the lift handle outward

(away) from the unit while pulling the door down and
out of the upper door channel.The door will come
free of the generator enclosure.

The battery door and the air intake door do not have locks
or lift handles.They are opened by lifting on the louvers
instead of a lift handle. However, you must remove the
door lock screw, found directly above the center of the
door. Replace the screw to secure the access door.

CAUTION!

Burn Hazard! The exhaust port

can reach a temperature of 600° F during use and
remains hot after shutdown. Carelessness could
cause severe burns.

To install an access door:

1. Support the door by grasping the lift handle or louver.
Guide the top of the door into the generator
enclosure.

2. Lift the door up into its upper channel until the
security pins clear the sill of the enclosure.

3. Push the lower half of the door into the door recess
until it is flush with the sides.

4. Seat the door by pushing it down until the rubber
coated security pins engage and the door rests on the
mounting sill.

5. If installing a lockable door, turn the key one quarter
turn counterclockwise. Remove the key.

Oil Service Door

Fuel
Inlet

Exhaust

Port

Air Intake Door

Door Lock

Screw

Door

Lock

Screw

Battery Door

Control Panel Door

Figure 4 — Enclosure Access Doors

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Owner’s Manual

12

BEFORE INITIAL START-UP

Engine Oil

This engine is shipped from the factory filled with the
recommended oil. Before starting the engine, check oil level
and ensure that engine is serviced as described on page 18
in “Checking Oil Level”.

CAUTION! Any attempt to crank or start the

engine before it has been properly serviced with the
recommended oil will result in an engine failure that
is not covered under warranty.

Oil Considerations

Your Backup Power System is equipped with an engine that
has been pre-run at the factory and does not require the
traditional “break-in” procedure.

In order to provide a greater “backup” capability, the
system is filled with synthetic oil (API SJ/CF 5W-30W).This
allows for system operation in the widest range of
temperature and climate conditions.

NOTE:The use of synthetic oil DOES NOT alter the
required oil change intervals described later in the
Maintenance section of this manual.

Battery Connection

The Backup Power System is supplied with a 12Volt DC
18 Amp-Hour sealed rechargeable battery. It is installed in
the unit and the battery cables are connected at the
factory.The unit’s 15 Amp fuse has been removed for
shipping (this prevents the unit from starting).

CAUTION! Do Not install the 15 Amp fuse until

all plumbing and wiring has been completed and
inspected. Failure to install the fuse as described in
the Installation Manual could cause the engine to
start.

NOTE:With the battery installed, utility power supplied to
the Automatic Transfer Switch, and the unit in AUTO mode,
the battery receives a trickle charge while the engine is not
running.The trickle charger cannot be used to recharge a
battery that is completely discharged.

Gaseous Fuel System

• Ensure that all fuel pipe connections are tight, secure and

without leaks.

• Ensure that all shutoff valves are OPEN and that

adequate pressure is available.

If you smell ‘raw’ gaseous fuel (natural or LP) near the unit,
immediately turn off the gas supply to the generator.
Contact your gas utility or the system installer for
assistance in determining the source of the smell.

The AUTO/OFF/MANUAL Switch

This three-position device is referred to herein as
“AUTO/OFF/MANUAL”. It is found on the control panel, as
shown earlier, and is used as follows:

•“AUTO” position is the normal operating position. If a

utility power outage is sensed, the system will start the
generator, let it reach stable operating speed, then
connect generator power to the sub-panel.
When utility power is restored, the system reconnects
utility power to the sub-panel, lets the engine ‘cool
down’, shuts off the generator, and waits for the next
utility power outage.

•“OFF” position turns off a running generator, takes the

system out of Automatic mode and resets faults.The unit
will not exercise, but the ‘Set Exercise’ setting is not lost.

•“MANUAL” position starts the engine but does not

disconnect utility power from the sub-panel. It is used for
maintenance or diagnostic functions.

CAUTION!With the switch set to AUTO, the

engine may crank and start at any time without
warning. Such automatic starting normally occurs
when utility source voltage drops below a preset
level or during the normal exercise cycle.To prevent
possible injury that might be caused by such sudden
starts, always set the AUTO/OFF/MANUAL switch
to OFF and remove the 15 Amp fuse before
working on or around the generator or transfer
switch.

The other controls and devices installed on the control
panel are described on page 10,“Know Your System
Control Panel”.

Briggs & Stratton Power Products Backup Power System

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AUTOMATIC OPERATION

To select automatic transfer operation, do the following:

1. Set the main distribution panel circuit breaker that

sends utility voltage to the transfer switch to ON.

2. Set the AUTO/OFF/MANUAL switch to AUTO.

3. Set the generator’s main circuit breaker to its ON

position.

Checking Automatic Operation

To check the system for proper automatic operation,
proceed as follows:

1. Check that AUTO/OFF/MANUAL is set to OFF.

2. Apply utility power to the Automatic Transfer Switch

by turning ON the main distribution panel circuit
breaker.

3. Set the AUTO/OFF/MANUAL switch to AUTO.The

Automatic Power System is now ready for automatic
operation.

4. Turn OFF the main distribution panel circuit breaker

sending power to the automatic transfer switch.

The engine will crank and start once the utility voltage
drops out and the sensor has timed out.After starting, the
Automatic Power Transfer System will transfer essential
circuit sub-panel loads to the generator. Let the system go
through its entire automatic operation sequence.

5. With the generator output supplying its loads, turn
ON the main distribution panel circuit breaker that
supplies utility power to the Automatic Power Transfer
Switch.

6. After about 6 seconds, the automatic transfer switch
will transfer loads back to the utility power.

7. About one minute after re-transfer, the engine will shut
down.

This completes the test procedures for automatic
operation.The backup power system will now start
automatically when utility power is lost and will supply
power to the essential circuit sub-panel.

Stopping the System

To disable the power transfer system for maintenance:

1. Ensure that the main distribution panel circuit breaker
that sends utility voltage to the transfer switch is ON.

2. Set the AUTO/OFF/MANUAL switch to OFF.

3. Set the generator’s main circuit breaker to its OFF
position.

Setting Exercise Timer

The Backup Power System is equipped with an exercise
timer that will start and exercise the system once every
seven days. During this exercise period, the unit runs for
approximately 12 minutes and then shuts down. Electrical
load transfer DOES NOT occur during the exercise cycle
(unless an utility power outage occurs).

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A switch on the control panel is labeled “Set Exercise”
(depicted on page 10).The specific day and the specific time
of day this switch is pressed is programmed into the
control board memory.This date and time is then used to
automatically initiate the system exercise cycle.

To perform the Set Exercise procedure:

1. Choose the day and time you want your backup power
system to exercise.

2. On that da

y and time, set the AUTO/OFF/MANUAL

switch to OFF.

3. Press and hold down the “Set Exercise” switch.The
Diagnostic LED blinks.

4. Hold the switch down until the Diagnostic LED stops
blinking. Release the Set Exercise switch.

5. Set the AUTO/OFF/MANUAL switch to AUTO.“Set
Exercise” is complete.

For example, if you press the “Set Exercise” switch on
Sunday morning at 10:00 AM, the unit will run an exercise
cycle the following Sunday at 10:00 AM.

NOTE:“Set Exercise” will only work if the unit is in the
Automatic mode and this exact procedure is followed.The
exerciser does not need to be re-set if the 15 Amp fuse is
removed or changed.The exerciser will need to be re-set if
the 12 Volt DC battery is disconnected.

If you want to change the day and time the unit exercises,
simply perform the “Set Exercise” procedure at the exact
weekday and time you want it to take place.

SPECIFICATIONS

Generator

Model . . . . . . . . . . . . . . . . . . . . 1461 1535

Rated Maximum Power (LP*). . . 10.0 kW 8.0 kW
Rated Maximum Load Current:

at 240 Volts. . . . . . . . . . . . . . . 41.7 Amps 33.3 Amps

at 120 Volts. . . . . . . . . . . . . . . 83.3 Amps 66.7 Amps

Rated AC Voltage . . . . . . . . . . . . 120/240 Volts

Rated Frequency . . . . . . . . . . . . 60 Hz at 3600 rpm

Phase . . . . . . . . . . . . . . . . . . . . . Single Phase

Power Factor. . . . . . . . . . . . . . . 1.0

NG Fuel Supply Pressure. . . . . 5-14 in W.C. (127-356 mm)

LP Fuel Supply Pressure. . . . . . 11-14 in W.C. (279-

356 mm)

Normal Operating Range . . . . -20°F (-28.8°C) to 104°F

(40°C)

Output Sound Level . . . . . . . . 70 dB(A) at 23 ft. (7 m) at

full load

* Natural gas rating will depend on specific fuel but typical derates

are between 10 to 20% off the LP gas rating.

Engine

Type . . . . . . . . . . . . . . . . . . . . . . Air Cooled, 4 stroke,V-Twin,

Horizontal Shaft, OHV dual

fuel engine

Bore x Stroke . . . . . . . . . . . . . . 2–72 mm x 70 mm

Displacement . . . . . . . . . . . . . . . 570 cc

Spark Plug . . . . . . . . . . . . . . . . . Champion RC12YC

Oil Type . . . . . . . . . . . . . . . . . . . Synthetic SAE 5W30,API

SJ/CF

Oil Capacity (w/filter) . . . . . . . . 48 oz. (1.6 l)

Spark Plug gap . . . . . . . . . . . . . 0.030 in (.76 mm)

Briggs & Stratton Power Products Backup Power System

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15

MAINTENANCE

Fault Detection System

The generator may have to run for long periods of time
with no operator present. For that reason, the system is
equipped with sensors that automatically shut down the
generator in the event of potentially damaging conditions,
such as low oil pressure, high oil temperature, over speed,
and other conditions.

A light on the control panel called the Diagnostic LED will
turn on and off in a series of blinks.The blink pattern is
repeated with a brief pause between each series.The
number of blinks in the series indicates the detected fault,
as listed on the control panel and below:

Number of LED Flashes Fault Description

1 Low battery voltage
2 Low oil pressure
3 Low voltage
4 Engine fail to start
5 Low frequency
6 Engine overspeed
7 Oil temperature high

Reset Fault Detection System

The operator must reset the fault detection system each
time it activates.To do so, place the AUTO/OFF/MANUAL
switch in the OFF position for 30 seconds or more.
Return the backup power system to service after
correcting the problem by placing the
AUTO/OFF/MANUAL switch in the AUTO position.

A description of each fault and suggested remedies are as
follows:

No Blinks - ‘Dead’ Unit

This condition is caused by a completely dead starting
battery.To remedy the problem, remove the 15 Amp fuse
and disconnect the battery from the generator.Take the
battery to a local battery store for analysis. Replace battery
only with a genuine Generac part number 188443.

Replace the battery in the battery compartment after it has
been fully recharged, connecting the NEGATIVE cable last.
Install the 15 Amp fuse. Reset the Fault Detection system
as described above.

Low Battery Voltage

This fault is indicated by one blink.This condition occurs if
the generator cannot start because the starting battery
output power is below that needed to ‘turn-over’ the
engine. Causes for this problem may be a failed battery or a
failed trickle charger circuit.

To remedy the problem, remove the 15 Amp fuse and
disconnect the battery from the generator.Take the battery
to a local battery store for analysis. Replace battery only
with a genuine Generac part number 188443.

Replace the battery in the battery compartment after it has
been fully recharged, connecting the NEGATIVE cable last.
Install the 15 Amp fuse. Reset the Fault Detection system
as described above. Check battery trickle charge output.

Low Oil Pressure

This fault is indicated by two blinks.The unit is equipped
with an oil pressure switch (Figure 5) using normally closed
contacts that are held open by engine oil pressure during
operation. Should oil pressure drop below the 8 psi range,
switch contacts close and the engine is shut down.

To remedy the low oil pressure condition, fix any obvious
oil leak and/or add the recommended oil to the FULL mark
on the dipstick. Reset the Fault Detection system as
described above.

If low oil pressure condition still exists, engine will start,
then shut down after about 10 seconds and diagnostic LED
will flash. In this case, contact an authorized service facility.

Figure 5 — Low Oil Pressure & High Temp. Switches

High

Temperature

Switch

Oil Drain

Fitting

Oil

Pressure

Switch

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Low Voltage

This fault is indicated by three blinks.This condition is
caused by a restriction in the fuel flow, a broken or
disconnected signal lead, a failed alternator winding, the
control panel circuit breaker is open, or overloaded circuits
in the essential circuit sub-panel.

Remedy the problem (you may need to contact your
installer or Generac Technical Services for assistance), then
reset the Fault Detection system, as described above.

Engine Fail To Start

This fault is indicated by four blinks.This feature prevents
the generator from damaging itself if it continually attempts
to start in spite of another problem, such as no fuel supply.
Each time the system is directed to start, the unit will
crank for 15 seconds, pause for 15 seconds, crank for
15 seconds, pause for 15 seconds, and repeat. If the system
does not begin producing electricity after approximately
90 seconds, the unit will stop cranking and the LED will
blink.

The most likely cause of this problem is no fuel supply.
Check the inside and outside fuel shut off valves to ensure
they are fully open. Other causes could be failed spark
plug(s), failed engine ignition, or the engine air filter is
clogged.You may need to contact your installer for
assistance if you can’t remedy these problems.When the
problem is corrected, reset the Fault Detection system as
described above.

Low Frequency

This fault is indicated by 5 blinks.This feature protects
devices connected to the essential circuit sub-panel by
shutting the generator down if its engine runs slower than
the preset limit.

This condition is caused by a failed engine governor or by
excessive loads on the essential circuit sub-panel.To
remedy the problem, you may need to contact your
installer or Generac Technical Services for assistance.When
the problem is corrected, reset the Fault Detection system
as described above.

Engine Overspeed

This fault is indicated by 6 blinks.This feature protects
devices connected to the essential circuit sub-panel by
shutting the generator down if its engine happens to run
faster than the preset limit.The overspeed fault is detected
as follows:

• If the generator output frequency runs at 72 Hz for five
seconds, the generator will shut down.

• If the generator output frequency reaches 75 Hz, the
generator will shut down instantly.

This condition is caused by a failed engine governor.To
remedy the problem, you should contact your installer or
Generac Technical Services for assistance.When the
problem is corrected, reset the Fault Detection system as
described above.

Oil Temperature High

This fault is indicated by seven blinks.The contacts of the
temperature switch (Figure 6) are normally open. If the
engine temperature exceeds approximately 140°C (284°F),
the fault is detected and the engine shuts down.

Common causes for this condition include running the unit
with all access doors removed, obstructed air inlet or
exhaust port, or debris in the engine cylinder cooling fins.
To resolve the problem, remove any accumulated debris
and obstructions and let the engine cool down. Ensure that
the Oil Service door and/or the Control Panel door is
installed whenever the unit is running.When the problem is
corrected, reset the Fault Detection system as described
above.

Power During Fault Condition

Whenever the backup power system is in an uncorrected
fault condition, the automatic transfer switch is reset to
UTILITY POWER.This means that when utility power is
restored, utility power will be applied to the essential
circuit sub-panel loads.The generator is disconnected from
the automatic transfer switch for the duration of any
detected fault condition.

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Generator Maintenance

The generator warranty does not cover items that have
been subjected to operator abuse or negligence.To receive
full value from the warranty, the operator must maintain
the system as instructed in this manual.

All adjustments in this section should be made at least
once each season. Follow the requirements in the
“Maintenance Schedule” chart above.

Generator maintenance consists of keeping the unit clean
and dry. Operate the unit in an environment where it will
not be exposed to excessive dust, dirt, moisture or any
corrosive vapors.Cooling air louvers on the enclosure
must not become clogged with snow, leaves, or any other
foreign material.

Check the cleanliness of the unit frequently and clean when
dust, dirt, oil, moisture or other foreign substances are
visible on its exterior surface.

NOTE:Do Not use direct spray from a garden hose to
clean generator.Water can enter the engine and cause
problems. In addition, if water enters the generator through

cooling air slots, some water will be retained in voids and
cracks may develop in the rotor and stator winding
insulation.Water and dirt buildup on the generator internal
windings will eventually decrease the insulation resistance
of these windings.

To Clean the Generator:

CAUTION! Never insert any object or tool

through the air cooling slots, even if the engine is
not running.

• Use a damp cloth to wipe exterior surfaces clean.

• A soft, bristle brush may be used to loosen caked on
dirt, oil, etc.

• A vacuum cleaner may be used to pick up loose dirt and
debris.

• Low pressure air (not to exceed 25 psi) may be used to
blow away dirt. Inspect cooling air slots and openings on
the generator.These openings must be kept clean and
unobstructed.

Maintenance Schedule

The following chart is based on normal engine operation. Follow the hourly or calendar intervals, whichever occurs first.
More frequent service is required when operating in extremely dusty or heavy load conditions.

Maintenance Operation

Every
8 Hours
or Daily

Every

25 Hours or

Every Season

Every 50 Hours

or Every

Season

Every
100 Hours or
Every Season

Yearly

Check and refill engine oil X (Note 1)

Service air cleaner precleaner X (Note 2)
Change engine oil X (Note 1)
Replace air cleaner precleaner X
Inspect (and clean) spark arrester X
Service air cleaner cartridge X (Note 2)
Change oil filter X
Clean cooling fins, screens X
Check and adjust valve lash X
Replace spark plugs X

Note 1 - Change oil every 25 hours when operating under heavy load or in high temperatures.
Note 2 - Clean more often under dusty conditions or when airborne debris is present. Replace air cleaner parts, if very

dirty.

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Engine Maintenance

CAUTION!When working on the generator,

always remove the 15 Amp fuse from control panel.
Also disconnect spark plug wires from spark plugs
and keep wires away from spark plugs.This will
prevent accidental start–up.

Check fuel lines and fittings frequently for cracks or leaks.
Replace if necessary.

Checking Oil Level

Before placing the backup generator in service and at the
recommended maintenance interval, check the engine oil
level, as follows:

• Remove Oil Service door. Clean area around oil fill and
dipstick locations.

• Remove dipstick.Wipe with clean cloth.

• Insert dipstick fully. Remove and check oil level.

• If oil level is low, slowly add recommended oil to bring
level to “Full” mark on dipstick (Figure 6).

• A reusable oil spout that fits most oil bottles is supplied
to make it easier to pour oil into the engine (Figure 7).

Changing the Oil and Oil Filter

Oil capacity is approximately 1-1/2 quarts (48 ounces or

1.6 liters) when changing oil and filter. Use only 5W-30 API
Service Grade SJ or greater synthetic oil.

Change the oil after every 50 hours and replace oil
filter every 100 hours. If you are using this engine under

dirty or dusty conditions, or in extremely hot weather,
change the oil more often.

Use the following instructions to change the oil
while the engine is still warm:

1. Unclip and wipe the oil drain hose clean with a rag.
Place the oil drain hose into a suitable container. Grasp
the oil drain fitting (see Figure 5), push it in towards
the engine, rotate it counterclockwise to its stop, then
pull the fitting outwards. Oil should begin to flow out
of the oil drain hose.

2. When the oil is drained, grasp the oil drain fitting and
rotate it clockwise until it locks in place. Position the
oil drain hose into its storage clip.

3. Place a suitable container beneath the oil filter and
remove the filter.

Figure 6 — Oil Dipstick Markings

Figure 7 — Oil Fill Spout on Oil Bottle

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4. Coat the o-ring of a new filter with fresh, clean engine
oil.Turn the new filter by hand clockwise until the
gasket contacts the filter adapter, then tighten 1/2 to
3/4 turn more.

5. Fill engine with oil as described above.

6. Install and tighten the oil fill cap.

7. Run the engine for a minute; stop the engine and check
for oil leakage around the oil filter. Recheck oil level.

Replace the Spark Plugs
Replace the plugs every year. Use the recommended

spark plugs gapped for 0.030 in. (0.76 mm).

1. Stop the engine and pull the spark plug wires off of the
spark plugs.

2. Clean around the spark plugs and remove them from
the cylinder head.

3. Clean off carbon deposits on the spark plug electrode
using a wire brush or commercial solvent.Do Not
blast clean.

4. Set the spark plugs’ gap as recommended (Figure 8).
Install the correctly gapped spark plugs into the
cylinder heads.

Service Air Cleaner

The engine’s air cleaner is one of the most important areas
to maintain.The engine will not run properly and will be
damaged if it is run with a dirty air cleaner system.

Use only genuine Briggs & Stratton parts or their
equivalent.The use of replacement parts which are not of
equivalent quality may damage the engine.

Clean the foam precleaner every 25 hours and the
cartridge every 100 hours of operation. Clean or

replace more often in dusty or dirty conditions.

CAUTION! Never run this equipment without the

complete air cleaner system installed on the engine. Failure
to do so will result in premature engine wear and
significantly reduced engine life.

To service the air cleaner components:

1. Unhook clips on both sides of cover and remove cover
(Figure 9).

2. Carefully slide foam precleaner off cartridge.

3. To service precleaner,wash in liquid detergent and
water. Squeeze dry in a clean cloth. Never twist!
Saturate in clean, fresh engine oil. Squeeze in clean,
absorbent cloth to remove all EXCESS oil. Replace if
very dirty or damaged.

4. Remove knob and plate. Carefully remove cartridge to
prevent debris from entering carburetor.

5. To service cartridge, clean by tapping gently on a flat
surface. Do Not oil cartridge. Replace if very dirty or
damaged.

NOTE:Do Not use petroleum solvents, e.g. kerosene,
which will cause the cartridge to deteriorate. Do Not use
pressurized air to clean cartridge. Pressurized air can
damage the cartridge.

Figure 9 — Engine Air Cleaner Components

Cartridge

Precleaner

Plate

Body

Knob

Clips

Figure 8 — Gapping A Spark Plug

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4. Reinstall cartridge, plate and knob.

5. Reassemble precleaner on cartridge.

6. Replace cover and attach clips to body.

Inspect Spark Arrester Screen

The engine exhaust muffler has a spark arrester screen.
Inspect the screen every 50 hours of operation or once
each year, whichever comes first..The spark arrester must
be maintained in good condition by the owner/operator.

Inspect the spark arrester as follows:

• Using a powerful flashlight, examine the circular screen
installed in the end of the exhaust port.There should be
no rips or tears in the screen.There should be little or
no accumulated soot on the screen.

• Replace the screen if torn, perforated or otherwise
damaged. Do Not use a defective screen. Consult
Generac Technical Services for assistance in changing the
screen.

• If screen is not damaged, it may be cleaned in place with
a gentle brushing from a wire brush or bottle brush.

Engine Governed Speed

CAUTION!The engine speed was properly adjusted at

the factory and should require no additional adjustment.
Do Not attempt to change engine speed. If you believe the
engine is running too fast or too slow, contact the factory
for assistance. CHANGING THE ENGINE GOVERNED
SPEED WILL VOID THE ENGINE WARRANTY AND WILL
ADVERSELY AFFECT SYSTEM OPERATION.

To assure smooth operation, keep governor linkage, springs
and controls free of debris.

Valve Lash

Valve lash must be checked while engine is cold after every
100 hours of operation.Adjust if necessary.Valve lash is:

Intake and Exhaust. . . . . 0.004 - 0.006 in. (0.10 - 0.15 mm)

Carburetor Adjustments

The engine carburetor is preset at the factory.The
carburetor should not be tampered with because doing so
will void the emission control system warranty. If you
experience problems or your engine is used at an altitude
higher than 5,000 feet, contact your installer or the factory.

If You Call the Factory:

You must have the following information at hand if it is
necessary to contact Generac Technical Services regarding
service or repair of this unit:

1. Obtain the unit Model Number and Serial Number
from the unit data decal. See “Know Your Backup
Generator” diagram for location.

2. Obtain the engine Model/Type/Code numbers from the
engine label. See “Know Your Backup Generator”
diagram for location. Please note that the model
number may vary slightly from that presented herein.

STORAGE

The Briggs & Stratton Backup Power System is designed for
continuous backup operational duty.As such, there is no
need to take any storage precautions. However, if it
becomes necessary to take the system out of service for
an extended period, call Generac Technical Services at
920-674-3750, extension 2716, between 8:00AM and
5:00 PM CT for specific recommendations.

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21

TROUBLESHOOTING

Problem Cause Correction

Engine is running, but no
AC output is available.

1. Generator circuit breaker is open.

2. Fault in generator.

3. Poor wiring connections or defective
transfer switch.

4. Sub-panel circuit breaker open or
defective.

1. Reset circuit breaker.

2. Contact Generac Portable Products
service facility.

3. Check and repair.

4. Reset or replace circuit breaker.

Engine runs good at no­load but “bogs down"
when loads are
connected.

1. Short circuit in a connected load.

2. Generator is overloaded.

3. Shorted generator circuit.

1. Disconnect shorted electrical load.

2. See “Essential Circuits” on page 6.

3. Contact Generac Portable Products
service facility.

Engine will not start; or
starts and runs rough.

1. 15 Amp fuse missing or blown.

2. Dirty air cleaner.

3. Out of fuel.

4. Spark plug wire not connected to
spark plug.

5. Bad spark plug.

6. Intake valve stuck open or closed.

7. Engine compression lost.

8. Failed battery.

1. Install (new) 15 Amp fuse.

2. Clean or replace air cleaner.

3. Open fuel valve(s); check propane tank..

4. Connect wire to spark plug.

5. Replace spark plug.

6. Contact Generac Portable Products
service facility.

7. Contact Generac Portable Products
service facility.

8. Replace battery.

Engine shuts down during
operation.

1. Out of fuel.

2. Fault indicator blinking.

1. Check fuel valves, fill propane tank.

2. Count blinks and refer to “Fault
Detection System” on page 15.

Engine lacks power.

1. Dirty air filter.

2. Generator overloaded

1. Replace air filter.

2. See “Essential Circuits” on page 6.

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UNIT SCHEMATIC DIAGRAM

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Owner’s Manual

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UNIT WIRING DIAGRAM

PLG

Briggs & Stratton Power Products Backup Power System

Owner’s Manual

24

TRANSFER SWITCH SCHEMATIC DIAGRAM

Briggs & Stratton Power Products Backup Power System

Owner’s Manual

25

TRANSFER SWITCH WIRING DIAGRAM

Briggs & Stratton Power Products Backup Power System

Owner’s Manual

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UNIT EXPLODED VIEW

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UNIT PARTS LIST

Item Part # Qty. Description

1 NSP 1 ENGINE, B&S, 18 HP
2 22259GS 6 NUT, 5/16" - 18
3 22129GS 16 LOCKWASHER, 5/16" - M8
4 48031JGS 1 CLIP, Hoseband
5 92134GS 1 FILTER, Oil
6 H186285GS 1 PAN, Engine Mounting
7 186071GS 1 VALVE, Oil Drain
8 186430GS 1 HOSE, Oil Drain

9 25017GS 2 HHCS, 3/8" - 16 x 1/2"
10 22237GS 14 LOCKWASHER, 3/8"
11 38353GS 4 MOUNTS,Vibration
12 H185972GS 1 BASE, Mount
13 22531GS 2 HHCS, 5/16" - 18 x 1-3/4"
14 92609GS 2 MOUNTS,Vibration
15 29745GS 2 HHCS, 3/8" - 16 x 1"
16 22241GS 6 NUT, 3/8" - 16
17 51754GS 1 HHCS, M8 - 1.25 x 12
18 187032GS 1 WASHER, 3/8 Ext., Shakeproof
19 H185957GS 1 SUPPORT,Alt.
20 22127GS 5 NUT, 1/4" - 20
21 186152GS 1 HOSE, Gas Regulator to Engine
22 57822GS 2 CLAMP, Hose
23 H185966GS 1 BULKHEAD,Alternator Side
24 186647GS 1 DECAL, Outdoor Use Only
25 H189952GS 1 STRAP, Battery Hold Down
26 B4300GS 2 SWAGE BOLT, 1/4" - 20 x 1/2"
27 42907GS 6 HHCS, M8 1.25 x 16
28 188574GS 1 CABLE, Battery Positive
29 188443GS 1 BATTERY, 33AH
30 22131GS 2 WASHER, Flat 3/8"
31 22145GS 2 WASHER, Flat 5/16 - M8
32 188573GS 1 CABLE, Battery Negative
33 186070GS 4 WASHER, Fiber .26 x .62 x .06
34 39253GS 2 HHCS, M8 x 20
35 186148GS 1 HOSE, Gas - regulator
36 186151GS 1 ELBOW, Brass, 3/4" NPT x 1/2"

Gas
37 22413GS 2 HHCS, 1/4" - 20 x 1"
38 B4774GS 1 REGULATOR, Gas Fuel
39 186150GS 1 ELBOW, Brass 3/8 NPT
40 B4773GS 1 SOLENOID, Gas Fuel
41 H185961GS 1 CORNER,Alt.Air Inlet, Left
42 26850GS 3 WASHER, Ext. M6-1/4"

Shakeproof
43 B4300GS 2 BOLT SWAG, 1/4 - 20
44 B4769GS 1 CONTACTOR, Starter

Item Part # Qty. Description

45 186375GS 1 CLAMP, Hose
46 185955GS 4 STUD, Muffler Mount
47 187049GS 1 PLUG, Dome
48 49813GS 4 NUT, M6 - 1.0
49 22097GS 9 LOCKWASHER, M6 - 1/4"
50 22473GS 4 FLAT WASHER, M6 - 1/4"
51 H186125GS 4 BRACKET, Muffler
52 H186030GS 1 BASE, Muffler Box
53 56893GS 16 CRIMPTITE, 10 - 24 x 1/2"
54 22264GS 2 LOCKWASHER, M4 #8
55 186790BGS 1 WIRE, Ground
56 67897GS 2 MANIFOLD, Gasket
57 185900GS 1 MANIFOLD, Exhaust
58 186062GS 1 GASKET, Manifold, Muffler
59 86307GS 2 HHCS, 5/16" x 3/4" SEMS
60 B4260GS 1 DISK,Air Blocker
61 186242GS 2 PPHMS, #4 - 40 x .019"
62 186205GS 1 SWITCH, Thermodisk Oil Temp.
63 27772GS 2 LOCKWASHER, #4 Int.Tooth
64 186206GS 1 PLATE, Oil Temp Switch
65 B4268GS 1 ALTERNATOR, Sincro
66 22511GS 4 HHCS, 3/8 - 16 x 1-1/4"
67 H186320GS 1 DEFLECTOR, 45° Muffler Box
68 H186038GS 1 BOX, Muffler
69 185894GS 1 MUFFLER, with Brackets
70 22471GS 2 NUT, #8-32
71 185939CGS 1 CABLE, Starter
72 23152GS 2 HHCS, 3/8" - 16 x 3/4"
73 27482GS 1 WASHER, 5/16" Ext. Shakeproof
74 186790CGS 1 WIRE, Ground
75 186649GS 1 DECAL, Oil Drain
76 B4986GS 1 DECAL, Ground, Green
77 186551GS 1 INSULATION, Fuel Hose
78 26915GS 1 NIPPLE, 3/4" NPT
79 69397GS 4 BOLT, Manifold
80 45771GS 8 NUT, M8 - 1.25
81 187277GS 1 SCREEN, Spark Arrestor w/

screws
82 H189951GS 1 TRAY, Battery Support
83 96924GS 2 J-BOLT
84 49820GS 2 NUT, Locking Hex
85 59637GS 1 TAPTITE, 3/8" - 16 x 3/4"
86 96137GS 1 PLUG, 1/8" - 27
87 189295GS 1 FLAT WASHER
88 A6344GS 1 FITTING, Barbed, 90°, 1/8" NPT
89 189294GS 1 E-RING

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ENCLOSURE EXPLODED VIEW

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ENCLOSURE PARTS LIST

Item Part # Qty. Description

1 186564GS 1 PAD, Fountation Base w/ Holes
2 H185972GS 1 BASE, Mounting
3 186061GS 8 BUSHING, Stem
4 H185971GS 1 DOOR,Alternator Side
5 186049GS 3 HANDLE, Door, Recessed Pull
6 189792GS 5 PPHMS, #10-32 x 5/8"
7 H185962GS 1 CORNER,Alt. Air Inlet Right
8 B4300GS 40 SWAG BOLT, 1/4" - 20

9 H185968GS 1 BAFFLE, Horizontal,Alt. Side
10 H185961GS 1 CORNER,Alt.Air Inlet, Left
11 H185965GS 1 PANEL, Muffler Air Out
12 186582GS 1 BUSHING, Snap 11/16" I.D.
13 H185966GS 1 BULKHEAD,Alternator Side
14 B5053GS 1 KEY, Lock
15 186172GS 2 ASSEMBLY, Lock/Doors
16 H187232GS 2 DOOR, with Insulation
17 H186046GS 2 RAIL, Support Upper Front/Back
18 H187234GS 1 ROOF, with Insulation
19 H185963GS 1 CORNER, Engine Air Inlet Right
20 H186047GS 1 RAIL, Support Upper Engine Side
21 H185969GS 1 DOOR, Engine Air Inlet
22 H185964GS 1 CORNER, Engine, Left Side
23 H187235GS 1 BAFFLE, with Insulation
24 74908GS 12 TAPTITE, M5
25 B4986GS 1 DECAL, Ground
26 186173GS 2 BUSHING, Snap, 1" I.D.
27 H185967GS 1 BULKHEAD, Engine Side
28 186065GS 1 SEAL, Foam Engine Air Inlet
29 B4889GS 1 SEAL, Foam Alternator Air Inlet
30 H186760GS 1 COVER, Control Panel
31 29745GS 4 HHCS, 3/8" - 16 x 1"
32 185976GS 6 PLUG, Hole 1-1/8"
33 22131GS 4 FLATWASHER, 3/8"
34 22237GS 4 LOCKWASHER, 3/8"
35 22241GS 4 NUT, 3/8"
36 187060GS 1 CLAMP, 3/4" Nylon
37 186202GS 6 CLAMP, 1" Nylon
38 186277GS 1 WIRE HARNESS, Engine
39 B5082GS 1 DECAL, Danger High Voltage
40 22097GS 4 LOCKWASHER, M6
41 49813GS 4 NUT, M6 x 1.0
42 186790AGS 1 WIRE, Ground,To Control Panel
43 186345GS 1 LUG, Ground
44 186642GS 1 DECAL, LP/Natural Gas
45 186827GS 1 DECAL,Terminal Strip
46 28739AGS 1 TIE WRAP, 4" Black
47 26850GS 1 WASHER, Ext. M6 - 1/4" Shakeproof

Part Not Illustrated

187008GS 1 KIT, Door Seal

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INSULATION SET EXPLODED VIEW

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INSULATION SET PARTS LIST

Item Part # Qty. Description

1 H187234GS 1 ROOF, with Insulation

2 186188GS 2 INSULATION, Baffle Alt. Side

3 H186030GS 1 BASE, Muffler Box

4 H185966GS 1 BULKHEAD,Alternator Side

5 186186GS 1 INSULATION, Bulk Head Alt.. End

6 B4772GS 27 CLIPS,Dart

7 H185968GS 1 BAFFLE, Horizontal,Alt. Side

8 H187232GS 2 DOOR, with Insulation

9 189144GS 1 DECAL, Unit
10 H185972GS 1 BASE, Mounting
11 186641GS 1 DECAL, Operation Instructions
12 186646GS 1 DECAL,Warning Engine Can Start
13 H185962GS 1 CORNER,Alt.Air Inlet Right
14 186351GS 1 INSULATION, Muffler Box
15 186189GS 1 INSULATION, Corner, Right Side
16 186190GS 1 INSULATION, Corner, Left Side
17 H185961GS 1 CORNER,Alt.Air Inlet, Left
18 186643GS 1 DECAL, Fuel Inlet
19 H186038GS 1 BOX, Muffler
20 77816GS 1 DECAL, Hot Muffler
21 186352GS 1 INSULATION, Muffler Base

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ALTERNATOR EXPLODED VIEW AND PARTS LIST

Item Part # Qty. Description

1 B4906GS 1 SHIELD, Front
2 B4907GS 2 GRID, Front
3 B4908GS 1 BOLT, Shaft Stay
4 B4909GS 4 STAY BOLT, M8 x 30
5 B4910GS 1 ASSEMBLY, Housing
6 B4911GS 1 CAP
7 B4912GS 1 COVER, Blind End
8 B4913GS 1 COVER,Top Black

9 B4914GS 2 CAPACITOR, 25mF 450V
10 B4915GS 1 BEARING, 62052RS C3
11 B4916GS 1 CAPACITOR, Diode + Varistor + EMC
12 B4917GS 1 ROTOR, (Includes Item 13)
13 B4918GS 1 FAN
14 B4919GS 2 SCREW, M6 - 1.0 x 10mm
15 B4920GS 8 SCREW, M5 - 0.8 x 10mm
16 49820GS 1 LOCK NUT, M8 - 1.25
17 188928GS 1 CONNECTOR, 6-Pin Sincro
18 22473GS 6 WASHER, Flat M6
19 49813GS 6 NUT, M6

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CONTROL PANEL EXPLODED VIEW AND PARTS LIST

Item Part # Qty. Description

1 187225GS 1 CONTROL PANEL, with Silk

Screen
2 B4776GS 1 TRANSFORMER
3 B4799GS 1 STRIP,Terminal
4 65795GS 1 RECTIFIER, Battery Charge
5 H185967GS 1 BULKHEAD, Engine Side
6 77604GS 1 HOUR METER
7 B5111GS 1 CONTROL BOARD
8 186280GS 1 CIRCUIT BREAKER, 50 Amp,

Model 1461

186280BGS 1 CIRCUIT BREAKER, 40 Amp,

Model 1535
9 B4893GS 2 BRACKET, Resistor

10 B4867GS 1 RESISTOR, 25W, .5 OHM
11 57345GS 2 NEUTRAL, 4 Prong
12 186413GS 4 STANDOFF, Control Board
13 B4300GS 6 BOLT, Swage, 1/4-20

Item Part # Qty. Description

14 87799GS 1 SWITCH, Set Exercise
15 B5133GS 1 DIODE, Light
16 186443GS 1 SWITCH, Auto/Off/Manual
17 32300GS 1 HOLDER, Fuse
18 22676GS 1 FUSE, 15 Amp AGC
19 22264GS 10 LOCKWASHER, M4
20 51715GS 10 NUT, M4 - 0.7
21 22985GS 4 FLATWASHER, M4
22 49226GS 1 LOCKWASHER, M5
23 23897GS 1 FLATWASHER, M5
24 51716GS 1 NUT, M5 - 0.8
25 43182GS 4 LOCKWASHER, M3
26 51714GS 4 NUT, M3 - 0.5
27 187060GS 1 CLAMP, Cable 3/4" I.D.
28 186645GS 1 DECAL, Caution Electrical Shock
29 186648GS 1 DECAL, Control Panel Fault

Description

Briggs & Stratton Power Products Backup Power System

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TRANSFER SWITCH EXPLODED VIEW

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TRANSFER SWITCH PARTS LIST

Item Part # Qty. Description

1 B4852GS 1 BOX, Plastic
2 B5079GS 1 DECAL, Utility Load
3 B4852GS 1 INSERT, Box
4 57073GS 1 NEUTRAL BLOCK
5 185890GS 2 RELAY, 900 Series
6 B4858GS 1 FUSE HOLDER, 30 Amp
7 B4857GS 4 FUSE, 2 Amp, 600 Volt
8 75475GS 4 SCREW, M4 x 10
9 75476GS 6 SCREW, M4 x 16

10 43116GS 1 SCREW, M6 x 12
11 B4856GS 1 CONNECTION LUG, Ground
12 91526GS 4 SCREW, M5 x 12
13 49226GS 4 LOCK WASHER, M5
14 23897GS 4 FLAT WASHER, #10
15 B5052GS 1 TERMINAL STRIP
16 22264GS 10 LOCK WASHER, #8
17 51715GS 10 NUT, M4
18 22097GS 1 LOCK WASHER, 1/4
19 49813GS 1 NUT, M6
20 B5084GS 1 DECAL, UL Type
21 B5083GS 1 DECAL, UL Listed
22 B4986GS 1 DECAL, Ground
23 B5107GS 1 DECAL, Generator Connection
24 B5081GS 1 DECAL, Neutral
25 B5106GS 1 DECAL, Utility Connection
26 B5105GS 1 DECAL, Load Connection
27 B5087GS 1 DECAL, Intended Use
28 B5080GS 1 DECAL,Terminal Strip
29 186021GS 1 DECAL, Identification
30 B5086GS 1 DECAL,Warning, Live Circuit
31 B5082GS 1 DECAL, Danger High Voltage
32 B5085GS 1 DECAL,Warning Shock
33 B5088GS 1 DECAL,Auto Sequence
34 B4854GS 6 TERMINAL, 14-6 Awg
35 22241GS 1 NUT, 3/8"-16
36 22237GS 1 LOCK WASHER, 3/8"

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ENGINE EXPLODED VIEW

Briggs & Stratton 18 hp Engine, Model 354445 0123-E1

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Briggs & Stratton Power Products Backup Power System

Owner’s Manual

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Briggs & Stratton Power Products Backup Power System

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Item Part # Description

1 808702 Cylinder Assembly
2 808534 Kit-Bushing/Seal (Magneto Side)
3 805101* Seal-Oil (Magneto Side)
5 808698 Head-Cylinder (Cylinder #1)

5A 808699 Head-Cylinder (Cylinder #2)

7 690888*§ Gasket-Cylinder Head
8 808984 Breather Assembly
9 807893* Gasket-Breather

10 690751 Screw (Breather Assembly)

10A 806421 Screw (Breather Assembly)

11 808686 Tube-Breather
12 691684* Gasket-Crankcase
13 692059 Screw (Cylinder Head)
15 690946 Plug-Oil Drain
16 692173 Crankshaft
17 690752 Bearing-Ball
18 808847 Cover-Crankcase
20 805049* Seal-Oil (PTO Side)
22 692540 Screw (Crankcase Cover)
23 808768 Flywheel
25 808326 Piston Assembly-Std (Standard)
26 807889 Ring Set (Standard)
27 690683 Lock-Piston Pin
28 807886 Pin- Piston
29 807900 Rod-Connecting (Standard)
32 690698 Screw (Connecting Rod)
33 808687 Valve - Exhaust
34 807680 Valve- Intake
35 692084 Spring-Valve (Intake)
36 692084 Spring-Valve (Exhaust)
39 690745 Deflector-Oil
40 692058 Retainer- Valve
42 807683 Keeper- Valve
45 690977 Tappet- Valve
46 691557 Camshaft
50 692124 Manifold-Intake
51 806457* Gasket-Intake

51A 692035*§ Gasket- Intake

54 690676 Screw (Intake Manifold)

89 690283 Plug-Oil
122 690747 Spacer-Carburetor
125 808692 Carburetor
146 691639 Key-Timing
161 691561 Base-Air Cleaner
163 692081* Gasket-Air Cleaner
188 692056 Screw (Control Bracket)
192 807623 Adjuster-Rocker Arm
206 691244 Nut-Governor Control
208 691549 Rod-Governor Control
209 691506 Spring-Governor
211 692068 Spring-Governor Idle
212 690712 Link-Throttle
222 808454 Bracket-Control
227 690236 Lever-Governor Control
232 692073 Spring-Governor Link
239 690233 Switch-Oil Pressure
262 692083 Screw (Rod Bracket)
273 690681* O-Ring Seal (Oil Pump)
276 691766*§ Washer-Sealing

276A 690704 Washer-Sealing (Governor Crank)

280 691526 Bracket-Rod
287 692062 Screw (Dipstick Tube)
304 690930 Housing-Blower

Item Part # Description

305 692056 Screw (Blower Housing)

305A 692539 Screw (Blower Housing)

308 806546 Cover-Cylinder Head (Cyl. #1)

308A 806547 Cover-Cylinder Head (Cyl. #2)

309 691564 Motor-Starter (Steel Pinion)
310 692033 Bolt (Starter Motor)
311 497605 Brush Set
322 692539 Screw (Cylinder Head Cover)
332 690887 Nut (Flywheel)
333 492341 Armature-Magneto
334 692066 Screw (Magneto Armature)
337 491055 Sparkplug
338 691312* Gasket-Dipstick
358 808784* Gasket Set-Engine
359 691077 Washer (Ground Terminal)
363 19203 Flywheel Puller
365 690711 Screw (Carburetor to Manifold)
373 691612 Nut (Ground Terminal)
377 806066 Key-Woodruff
413 693587 Nut (Starter Motor)
432 691509 Cap-Spring
439 692154* O-Ring Seal (Crankcase Cover)
445 394018 Filter-Air Cleaner Cartridge
447 692539 Screw (Air Guide Cover)
454 693289 Cap-Breather
466 806466 O-Ring Seal (Breather Assembly)
467 691985 Knob-Air Cleaner
468 690690* O-Ring Seal (Oil Pump Screen)
479 692537 Screw (Oil Pump Screen)
503 691532 Strap-Starter
505 690238 Nut (Governor Control Lever)
506 690872 Screw (Carburetor Cover)

506A 690677 Screw (Carburetor Cover)

507 691972 Insulator
510 496881 Drive-Starter
520 691084 Terminal-Ground
522 491832 Plug-Dipstick/Fill
523 693175 Dipstick
524 693172* Seal-Dipstick Tube
525 693174 Tube-Dipstick
529 690744 Grommet
544 693544 Armature- Starter
552 690701 Bushing-Governor Crank

552A 806686 Bushing-Governor Crank

555 692067 Screw (Starter Solenoid)
562 690239 Bolt (Governor Control Lever)
565 690682 Stud (Oil Filter Adapter)
572 690686 Baffle-Breather
573 690902 Plate-Back
578 692319 Wire Assembly
596 691492 Screw (Oil Pump)
598 807625 Shim- End Play
601 691145 Clamp-Hose
615 691550 Retainer-Governor Shaft
616 806685 Crank-Governor
635 692076 Boot-Sparkplug
638 691551 Washer (Cylinder Head Cover)
643 692079 Retainer-Air Filter
683 691029 Nut (Starter Solenoid)
689 691272 Spring-Friction
691 690680* Seal-Governor Shaft
697 692062 Screw (Drive Cap)
718 806469 Pin-Locating

Item Part # Description

726 Gear-Ring (In Flywheel Kit Only,

Ref 23)
727 690714 Cover-Starter Drive
729 690586 Clip-Wire
732 690688 Screw (Starter Drive Cover)

732A 692539 Screw (Starter Drive Cover)

737 690679 Screw (Oil Filter Adapter)
741 691530 Gear- Timing
750 692539 Screw (Oil Pump Cover)
797 691029 Nut (Brush Retainer)

797A 693167 Nut (Brush Retainer)

801 808777 Cap-Drive
802 691286 Cap-End
803 693547 Housing-Starter
812 692055 Nut (Rocker Arm Cover)
816 690706 Washer (Oil Filter Adapter)
830 691544 Stud-Rocker Arm
833 692539 Screw (Cleaner Mounting Strap)
851 493880 Terminal-Sparkplug
862 692153 Strap-Cleaner Mounting
865 690750 Cover-Air Guide
868 691963*§ Seal-Valve
871 692057 Bushing-Valve Guide
879 690757 Cover-Carburetor
934 691058 Screw (Fan Retainer)
967 272490 Filter-Pre Cleaner
968 692097 Cover-Air Cleaner
971 692537 Screw (Air Cleaner Base)
988 692063* Gasket-Oil Adapter
996 691577 Shield-Carburetor

1004 690743 Duct-Air
1005 690911 Fan-Flywheel
1006 690452 Retainer-Fan
1017 690900 Screen-Oil Pump
1022 806039*§ Gasket-Rocker Cover
1023 690758 Cover-Rocker Arm

1023A 808648 Cover-Rocker Arm Assembly

1024 693185 Pump-Oil
1025 690689 Spool-Governor
1026 691836 Rod-Push (Steel)
1028 808237 Adapter-Oil Filter
1029 691543 Arm-Rocker
1051 691124 Ring-Retaining
1054 280275 Tie-Cable
1090 691293 Retainer-Brush
1095 808391 Gasket Set-Valve
1100 690973 Pivot-Rocker Arm

* Included in Engine Gasket Set, Ref Number 358.

§ Included in Valve Gasket Set, Ref Number 1095.

Routine Engine Maintenance Parts

Part # Description

394018 CARTRIDGE,Air Cleaner
272490 PRECLEANER, Air Cleaner
5050 SET,Air Cleaner Cartridge and Precleaner
491055 PLUG, Spark, (RC12YC)
492932 FILTER, Oil
19374 WRENCH,Spark Plug
19368 TESTER,Spark

ENGINE PARTS LIST

Please note that your engine may be marked as ‘354447 0044-E1. Both engine models are interchangeable in this unit.

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NOTES

Briggs & Stratton Power Products Backup Power System

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43

EMISSION CONTROL

SYSTEM WARRANTY

Briggs & Stratton Corporation (B&S) , the California Air Resources Board
(CARB) and the United States Environmental Protection Agency (U.S. EPA)
Statement (Owner's Defect Warranty Rights and Obligations)
EMISSION CONTROL WARRANTY COVERAGE IS APPLICABLE TO
CERTIFIED ENGINES PURCHASED IN CALIFORNIA IN 2000 AND
THEREAFTER,WHICH ARE USED IN CALIFORNIA,AND TO CERTIFIED
MODEL YEAR 2000 AND LATER ENGINES WHICH ARE PURCHASED
AND USED ELSEWHERE IN THE UNITED STATES.

California and United States Emission Control Defects
Warranty Statement

CARB, U.S. EPA and B&S are pleased to explain the Emission Control
System Warranty on your model year 2000 and later small off-road engine
(SORE). In California, new small off-road engines must be designed, built
and equipped to meet the State's stringent anti-smog standards. Elsewhere
in the United States, new non-road, spark-ignition engines certified for
model year 1997 and later, must meet similar standards set forth by the
U.S. EPA. B&S must warrant the emission control system on your engine
for the periods of time listed below,provided there has been no abuse,
neglect or improper maintenance of your small off-road engine.
Your emission control system includes parts such as the carburetor, air
cleaner, ignition system, muffler and catalytic converter.Also included may
be connectors and other emission related assemblies.
Where a warrantable condition exists, B&S will repair your small off-road
engine at no cost to you including diagnosis, parts and labor.

Briggs and Stratton Emission Control Defects Warranty
Coverage

Small off-road engines are warranted relative to emission control parts
defects for a period of two years, subject to provisions set forth below. If
any covered part on your engine is defective, the part will repaired or
replaced by B&S.

Owner's Warranty Responsibilities

As the small off-road engine owner, you are responsible for the
performance of the required maintenance listed in your Operating and
Maintenance Instructions. B&S recommends that you retain all of your
receipts covering maintenance on your small off-road engine, but B&S
cannot deny warranty solely for the lack of receipts or for your failure to
ensure the performance of all scheduled maintenance.
As the small off-road engine owner, you should however be aware that
B&S may deny you warranty coverage if your small off-road engine or a
part has failed due to abuse, neglect, improper maintenance or unapproved
modifications.
You are responsible for presenting your small off-road engine to an
Authorized B&S Service Dealer as soon as a problem exists.The
undisputed warranty repairs should be completed in a reasonable amount
of time, not to exceed 30 days.
If you have any questions regarding your warranty rights and
responsibilities, you should contact a B&S Service Representative at
1-414-259-5262.
The emission warranty is a defects warranty. Defects are judged on
normal engine performance.The warranty is not related to an in-use
emission test.

Briggs and Stratton Emission Control Defects Warranty
Provisions

The following are specific provisions relative to your Emissions Control
Defects Warranty Coverage. It is in addition to the B&S engine warranty for
non-regulated engines found in the Operating and Maintenance Instructions.

1. Warranted Parts

Coverage under this warranty extends only to the parts listed below
(the emission control systems parts) to the extent these parts were
present on the engine purchased.
a. Fuel Metering System

• Carburetor and internal parts

b. Air Induction System

• Air cleaner

• Intake manifold

c. Ignition System

• Spark plug(s)

• Magneto ignition system

d. Miscellaneous Items Used in Above Systems

• Vacuum, temperature, position, time sensitive valves and
switches

• Connectors and Assemblies

2. Length of Coverage

B&S warrants to the initial owner and each subsequent purchaser that the
Warranted Parts shall be free from defects in materials and workmanship
which caused the failure of the Warranted Parts for a period of two years
from the date the engine is delivered to a retail purchaser.

3. No Charge

Repair or replacement of any Warranted Part will be performed at
no charge to the owner, including diagnostic labor which leads to the
determination that a Warranted Part is defective, if the diagnostic
work is performed at an Authorized B&S Service Dealer. For
emissions warranty service contact your nearest Authorized B&S
Dealer as listed in the "Yellow Pages" under "Engines, Gasoline,"
"Gasoline Engines," "Lawn Mowers" or similar category.

4. Claims and Coverage Exclusions

Warranty claims shall be filed in accordance with the provisions of
the B&S Engine Warranty Policy.Warranty coverage shall be excluded
for failures of Warranted Parts which are not original B&S parts or
because of abuse, neglect or improper maintenance as set forth in
the B&S Engine Warranty Policy. B&S is not liable to cover failures of
Warranted Parts caused by the use of add-on,non-original, or
modified parts.

5. Maintenance

Any Warranted Part which is not scheduled for replacement as
required maintenance or which is scheduled only for regular
inspection to the effect of "repair or replace as necessary" shall be
warranted as to defects for the warranty period.Any Warranted part
which is scheduled for replacement as required maintenance shall be
warranted as to defects only for the period of time up to the first
scheduled replacement for that part.Any replacement part that is
equivalent in performance and durability may be used in the
performance of any maintenance or repairs.The owner is responsible
for the performance of all required maintenance, as defined in the
B&S Operating and Maintenance Instructions.

6. Consequential Coverage

Coverage hereunder shall extend to the failure of any engine components
caused by the failure of any Warranted Part still under warranty.

LIMITED WARRANTY

BRIGGS & STRATTON BACKUP POWER SYSTEM GENERATORS

This Generac Portable Products (hereinafter “Company”) backup generator system has been manufactured and inspected with care by
experienced craftsman. If you are the original purchaser, the Company warrants for three (3) years or 1,500 hours, whichever occurs
first, that the generator system will be free from defects and workmanship if properly installed,maintained, and operated in accordance
with Company instruction manuals.The Company will, at its option,repair or replace any part which, upon examination and inspection
by a Company-authorized service facility, is found to be defective.This warranty applies only to a Generac Portable Products backup
generator used in a “standby application”.This warranty is void when the system is used in a life support application or in a prime power
application in place of utility power. See section below named “Power Section” for standby power rating.

Warranty Schedule

The Generac Portable Products backup generator will be warranted for three (3) years or 1,500 hours, whichever occurs first.The
Installation Checklist must be completed in full, returned and on file at Generac Portable Products.

All warranty expenses are subject to the conditions defined in the Generac Portable Products Policies, Procedures and Flat Rate Manual.

Power Section: Standby Power Rating

The standby power rating is applicable for supplying emergency power for the duration of normal power interruption.No sustained
overload capability is available for this rating.This rating is applicable to installations served by a reliable normal utility source.This rating
is only applicable to variable loads with an average load factor of 80% of the standby rating for a maximum of 500 hours of operation
per year. The standby rating is only applicable for emergency and standby power where the generator set serves a the backup to the
normal utility source.

THIS WARRANTY SHALL NOT APPLY TO THE FOLLOWING:

• Cost of normal maintenance, adjustments, installation, and start-up.

• Units sold, rated or used for “Prime Power” applications as the Company has defined Prime Power. Contact a Generac Portable
Products authorized service facility for definition.

• Failures due to, but not limited to, normal wear and tear, accident, misuse, abuse, neglect, improper installation, or rodent damage.

• Failures caused by an external cause or act of God, such as collision, theft,vandalism, fire, lightning, flooding, or any other kind of
natural disaster.

• Telephone or any other kind of communication expenses.

• Living or travel expenses of person(s) performing service, except as specifically included within the terms of a specific unit warranty
period.

• Rental equipment used while repairs are being performed.

• Overtime charges such as labor and travel.

• Overnight freight charges for replacement parts.

• Starting batteries, fuses, light bulbs, and engine fluids.

• Repairs performed by an unauthorized service facility without prior approval from the Company warranty / service department.

• Expenses incurred investigating performance complaints, unless defective Company materials or workmanship causes the problem.

THERE IS NO OTHER EXPRESS WARRANTY. THE COMPANY HEREBY DISCLAIMS ANY AND ALL IMPLIED
WARRANTIES, INCLUDING BUT NOT LIMITED TO THOSE OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE TO THE EXTENT PERMITTED BY LAW.THE DURATION OF ANY IMPLIED WARRANTIES WHICH CANNOT
BE DISCLAIMED IS LIMITED TO THE TIME PERIOD AS SPECIFIED IN THE EXPRESS WARRANTY. LIABILITY FOR
CONSEQUENTIAL, INCIDENTAL OR SPECIAL DAMAGES UNDER ANY AND ALL WARRANTIES IS EXCLUDED.THE
COMPANY ALSO DISCLAIMS ANY RESPONSIBILITY FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES, SUCH AS THE
LOSS OF TIME OR THE USE OF THE POWER EQUIPMENT, OR ANY COMMERCIAL LOSS DUE TO THE FAILURE OF THE
EQUIPMENT. AND ANY IMPLIED WARRANTIES ARE LIMITED TO THE DURATION OF THIS WRITTEN WARRANTY.This
warranty gives you specific legal rights that vary from state to state.

For service, see your nearest Generac Portable Products authorized service facility or call 920-674-3750, extension 2716.

GENERAC PORTABLE PRODUCTS

Jefferson,Wisconsin U.S.A.