Briggs & Stratton 3500 Watt Portable Generator User manual

Manual No. 203476GS Revision A (04/16/2007)
BRIGGS & STRATTON POWER PRODUCTS GROUP, LLC
JEFFERSON, WISCONSIN, U.S.A.
3500 Watt Portable Generator
Operator’s Manual

Briggs & Stratton Power Products Group, LLC
900 North Parkway
Jefferson, WI 53549
Copyright © 2007 Briggs & Stratton Power Products Group,
LLC. All rights reserved. No part of this material may be
reproduced or transmitted in any form by any means without
the express written permission of Briggs & Stratton Power
Products Group, LLC.
Thank you for purchasing this quality-built Briggs & Stratton generator. We are pleased that you’ve placed your confidence in
the Briggs & Stratton brand. When operated and maintained according to the instructions in this manual, your Briggs &
Stratton generator will provide many years of dependable service.
This manual contains safety information to make you aware of the hazards and risks associated with generators and how to
avoid them. Because Briggs & Stratton does not necessarily know all the applications this generator could be used for, it is
important that you read and understand these instructions thoroughly before attempting to start or operate this equipment.
Save these instructions for future reference.
This generator requires final assembly before use. Refer to the Assembly section of this manual for instructions on final
assembly procedures. Follow the instructions completely.
Where to Find Us
You never have to look far to find Briggs & Stratton support and service for your generator. Consult your Yellow Pages. There
are over 30,000 Briggs & Stratton authorized service dealers worldwide who provide quality service. You can also contact
Briggs & Stratton Customer Service by phone at [phone], or on the Internet at BRIGGSandSTRATTON.COM.
Generator
Model Number
Revision
Serial Number
Engine
Model Number
Type Number
Code Number
Date Purchased

Table of Contents
Operator Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Equipment Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Safety Rules. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Unpack Generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Shipment Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Install Wheel Kit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Add Engine Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Add Fuel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
System Ground . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Connecting to a Building’s Electrical System. . . . . . . . . . . . . . . . . . . . . . . . 7
Generator Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Features and Controls. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Cord Sets and Receptacles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Starting the Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Connecting Electrical Loads. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Stopping the Engine. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Don’t Overload Generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Maintenance Schedule. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Generator Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Engine Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Warranties. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Emissions Control System Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Generator Owner Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
1
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Operator Safety
Equipment Description
Read this manual carefully and become familiar
with your generator. Know its applications, its
limitations and any hazards involved.
The generator is an engine–driven, revolving field, alternating
current (AC) generator. It was designed to supply electrical
power for operating compatible electrical lighting, appliances,
tools and motor loads. The generator’s revolving field is
driven at about 3,600 rpm by a single-cylinder engine.
Every effort has been made to ensure that the information in
this manual is both accurate and current. However, the
manufacturer reserves the right to change, alter or otherwise
improve the generator and this documentation at any time
without prior notice.
The Emission Control System for this generator is warranted
for standards set by the Environmental Protection Agency
and the California Air Resources Board.
Safety Rules
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.
The safety alert symbol ( ) is used with a signal word
(DANGER, WARNING, CAUTION), a pictorial and/or a safety
message to alert you to hazards. DANGER indicates a hazard
which, if not avoided, will result in death or serious injury.
WARNING indicates a hazard which, if not avoided, could
result in death or serious injury. CAUTION indicates a hazard
which, if not avoided, might result in minor or moderate
injury. NOTICE indicates a situation that could result in
equipment damage. Follow safety messages to avoid or
reduce the risk of injury or death.
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.
Hazard Symbols and Meanings
A - Explosion F - Hot Surface
B - Fire G - Flying Objects
C - Electric Shock H - Moving Parts
D - Toxic Fumes J - Read Manual
E - Kickback
2BRIGGSandSTRATTON.COM
SAVE THESE INSTRUCTIONS
NOTICE
Exceeding generators wattage/amperage capacity can
damage generator and/or electrical devices connected to it.
• DO NOT exceed the generator’s wattage/amperage capacity. See
Don’t Overload Generator in the Operation section.
A B C
D E
G H
F
J
WARNING
Running engine gives off carbon monoxide, an
odorless, colorless, poison gas.
Breathing carbon monoxide can cause headache,
fatigue, dizziness, vomiting, confusion, seizures,
nausea, fainting or death.
• Operate generator ONLY outdoors.
• Install a battery operated carbon monoxide alarm near the
bedrooms.
• Keep exhaust gas from entering a confined area through
windows, doors, ventilation intakes, or other openings.
• DO NOT start or run engine indoors or in an enclosed area,
(even if windows and doors are open), including the generator
compartment of a recreational vehicle (RV).

3
WARNING
The engine exhaust from this product contains
chemicals known to the State of California to cause
cancer, birth defects, or other reproductive harm.
WARNING
Generator produces hazardous voltage.
Failure to isolate generator from power utility can
result in death or injury to electric utility workers
due to backfeed of electrical energy.
• When using generator for backup power, notify utility company.
Use approved transfer equipment to isolate generator from
electric utility.
• Use a ground fault circuit interrupter (GFCI) in any damp or
highly conductive area, such as metal decking or steel work.
• DO NOT touch bare wires or receptacles.
• DO NOT use generator with electrical cords which are worn,
frayed, bare or otherwise damaged.
• DO NOT operate generator in the rain or wet weather.
• DO NOT handle generator or electrical cords while standing in
water, while barefoot, or while hands or feet are wet.
• DO NOT allow unqualified persons or children to operate or
service generator.
WARNING
Starter cord kickback (rapid retraction) can result
in bodily injury. Kickback will pull hand and arm
toward engine faster than you can let go.
Broken bones, fractures, bruises, or sprains
could result.
• When starting engine, pull cord slowly until resistance is felt and
then pull rapidly to avoid kickback.
• NEVER start or stop engine with electrical devices plugged in
and turned on.
WARNING
Fuel and its vapors are extremely flammable and
explosive.
Fire or explosion can cause severe burns or
death.
WHEN ADDING OR DRAINING FUEL
• Turn generator OFF and let it cool at least 2 minutes before
removing fuel cap. Loosen cap slowly to relieve pressure in
tank.
• Fill or drain fuel tank outdoors.
• DO NOT overfill tank. Allow space for fuel expansion.
• If fuel spills, wait until it evaporates before starting engine.
• Keep fuel away from sparks, open flames, pilot lights, heat, and
other ignition sources.
• DO NOT light a cigarette or smoke.
WHEN STARTING EQUIPMENT
• Ensure spark plug, muffler, fuel cap, and air cleaner are in place.
• DO NOT crank engine with spark plug removed.
WHEN OPERATING EQUIPMENT
• DO NOT tip engine or equipment at angle which causes fuel to
spill.
• This generator is not for use in mobile equipment or marine
applications.
WHEN TRANSPORTING OR REPAIRING EQUIPMENT
• Transport/repair with fuel tank EMPTY or with fuel shutoff valve
OFF.
• Disconnect spark plug wire.
WHEN STORING FUEL OR EQUIPMENT WITH FUEL IN TANK
• Store away from furnaces, stoves, water heaters, clothes dryers,
or other appliances that have pilot light or other ignition source
because they can ignite fuel vapors.
WARNING
• This generator does not meet U. S. Coast Guard Regulation
33CFR-183 and should not be used on marine applications.
• Failure to use the appropriate U. S. Coast Guard approved
generator could result in death or serious injury and/or
property damage.

4BRIGGSandSTRATTON.COM
WARNING
Contact with muffler area can result in serious
burns.
Exhaust heat/gases can ignite combustibles,
structures or damage fuel tank causing a fire.
• DO NOT touch hot parts and AVOID hot exhaust gases.
• Allow equipment to cool before touching.
• Keep at least 5 feet (1.5 m) of clearance on all sides of
generator including overhead.
• Code of Federal Regulation (CFR) Title 36 Parks, Forests, and
Public Property require equipment powered by an internal
combustion engine to have a spark arrester, maintained in
effective working order, complying to USDA Forest service
standard 5100-1C or later revision. In the State of California a
spark arrester is required under section 4442 of the California
Public resources code. Other states may have similar laws.
WARNING
Starter and other rotating parts can entangle
hands, hair, clothing, or accessories.
• NEVER operate generator without protective housing or covers.
• DO NOT wear loose clothing, jewelry or anything that may be
caught in the starter or other rotating parts.
• Tie up long hair and remove jewelry.
WARNING
Unintentional sparking can result in fire or
electric shock.
WHEN ADJUSTING OR MAKING REPAIRS TO YOUR GENERATOR
• Disconnect the spark plug wire from the spark plug and place
the wire where it cannot contact spark plug.
WHEN TESTING FOR ENGINE SPARK
• Use approved spark plug tester.
• DO NOT check for spark with spark plug removed.
CAUTION
Excessively high operating speeds increase risk of injury
and damage to generator.
Excessively low speeds impose a heavy load.
• DO NOT tamper with governed speed. Generator supplies
correct rated frequency and voltage when running at governed
speed.
• DO NOT modify generator in any way.
NOTICE
Improper treatment of generator can damage it and
shorten its life.
• Use generator only for intended uses.
• If you have questions about intended use, ask dealer or contact
local service center.
• Operate generator only on level surfaces.
• DO NOT expose generator to excessive moisture, dust, dirt, or
corrosive vapors.
• DO NOT insert any objects through cooling slots.
• If connected devices overheat, turn them off and disconnect
them from generator.
• Shut off generator if:
-electrical output is lost;
-equipment sparks, smokes, or emits flames;
-unit vibrates excessively.
NOTICE
Exceeding generators wattage/amperage capacity can
damage generator and/or electrical devices connected to it.
• DO NOT exceed the generator’s wattage/amperage capacity. See
Don’t Overload Generator in the Operation section.
• Start generator and let engine stabilize before connecting
electrical loads.
• Connect electrical loads in OFF position, then turn ON for
operation.
• Turn electrical loads OFF and disconnect from generator before
stopping generator.

Typical Generator Shown
5
Assembly
Read entire operator’s manual before you attempt
to assemble or operate your new generator.
Your generator requires some assembly and is ready for use
after it has been properly serviced with the recommended
fuel and oil.
If you have any problems with the assembly of your generator,
please call the generator helpline at 1-800-743-4115. If calling
for assistance, please have the model, revision, and serial
number from the data tag available. See Generator Controls
and Features for data tag location.
Unpack Generator
1. Set the carton on a rigid, flat surface.
2. Remove everything from carton except generator.
3. Open carton completely by cutting each corner from
top to bottom.
4. Leave generator on carton to install wheel kit.
Shipment Contents
The generator is supplied with:
• Engine oil bottle
• Operator’s manual
• Wheel kit
Install Wheel Kit
NOTE: Wheel kit is not intended for over-the-road use.
You will need the following tools to install these
components:
• 2 - 13mm open end wrenches
• 15/16" open end wrench
Install the wheel kit as follows:
1. Place bottom of generator cradle on a flat surface.
2. Place axle stud (A) through wheel retainer on cradle
frame.
3. Use 15/16” wrench to secure axle stud to frame with
5/8-18 jam nut (B).
4. Install other axle stud in same manner.
5. Tip unit and install wheel (C). Place flat washer (D) over
axle stud.
NOTE: Be sure to install wheel with raised hub inboard.
6. Retain wheel on axle stud with retaining pin (E). Install
other wheel on remaining axle stud the same way.
7. Attach support leg (F) using two 13mm wrenches with
20mm cap screws (G) and lock nuts (H).
8. Center lifting handle (J) on generator end of cradle.
Attach handle using two 13mm wrenches with 45mm
capscrews (K) and hex nuts (L).
G
A
F
H
B
D
K
L
J
CE

Add Engine Oil
1. Place generator on a flat, level surface.
2. Clean area around oil fill and remove yellow oil fill cap.
NOTE: See the section Oil to review oil recommendations.
Verify provided oil bottle is correct viscosity for current
ambient temperature.
3. Using oil funnel (optional), slowly pour contents of
provided oil bottle into oil fill opening.
4. Replace oil fill cap and fully tighten.
Add Fuel
Fuel must meet these requirements:
• Clean, fresh, unleaded gasoline.
• A minimum of 87 octane/87 AKI (91 RON). High
altitude use, see High Altitude.
• Gasoline with up to 10% ethanol (gasohol) or up to
15% MTBE (methyl tertiary butyl ether) is acceptable.
To protect the fuel system from gum formation, mix in a fuel
stabilizer when adding fuel. See Storage. All fuel is not the
same. If you experience starting or performance problems
after using fuel, switch to a different fuel provider or change
brands. This engine is certified to operate on gasoline. The
emission control system for this engine is EM (Engine
Modifications).
1. Clean area around fuel fill cap, remove cap.
2. Slowly add unleaded gasoline (A) to fuel tank (B). Be
careful not to overfill. Allow about 1.5" (4 cm) of tank
space (C) for fuel expansion.
3. Install fuel cap and let any spilled fuel evaporate before
starting engine.
High Altitude
At altitudes over 5,000 feet (1524 meters), a minimum
85 octane / 85 AKI (89 RON) gasoline is acceptable. To
remain emissions compliant, high altitude adjustment is
required. Operation without this adjustment will cause
decreased performance, increased fuel consumption, and
increased emissions. See an authorized Briggs & Stratton
dealer for high altitude adjustment information. Operation of
the engine at altitudes below 2,500 feet (762 meters) with
the high altitude kit is not recommended.
6BRIGGSandSTRATTON.COM
C
B
A
NOTICE
Improper treatment of generator can damage it and
shorten its life.
• DO NOT attempt to crank or start the engine before it has been
properly serviced with the recommended oil. This may result in
an engine failure.
NOTICE
Avoid generator damage.
Failure to follow Operator’s Manual for fuel
recommendations voids warranty.
• DO NOT use unapproved gasoline such as E85.
• DO NOT mix oil in gasoline.
• DO NOT modify engine to run on alternate fuels.
WARNING
Fuel and its vapors are extremely flammable and
explosive.
Fire or explosion can cause severe burns or
death.
WHEN ADDING FUEL
• Turn generator OFF and let it cool at least 2 minutes before
removing fuel cap. Loosen cap slowly to relieve pressure in
tank.
• Fill fuel tank outdoors.
• DO NOT overfill tank. Allow space for fuel expansion.
• If fuel spills, wait until it evaporates before starting engine.
• Keep fuel away from sparks, open flames, pilot lights, heat, and
other ignition sources.
• DO NOT light a cigarette or smoke.

7
System Ground
The generator has a system ground that connects the
generator frame components to the ground terminals on the
AC output receptacles. The system ground is connected to
the AC neutral wire (the neutral is bonded to the generator
frame).
Special Requirements
There may be Federal or State Occupational Safety and
Health Administration (OSHA) regulations, local codes, or
ordinances that apply to the intended use of the generator.
Please consult a qualified electrician, electrical inspector, or
the local agency having jurisdiction:
• In some areas, generators are required to be registered
with local utility companies.
• If the generator is used at a construction site, there
may be additional regulations which must be observed.
Connecting to a Building’s Electrical System
Connections for standby power to a building’s electrical
system must be made by a qualified electrician. The
connection must isolate the generator power from utility
power or other alternative power sources and must comply
with all applicable laws and electrical codes.
Generator Location
Clearances and Air Movement
Place generator outdoors in an area that will not accumulate
deadly exhaust gas. DO NOT place generator where exhaust
gas (A) could accumulate and enter inside or be drawn into a
potentially occupied building. Ensure exhaust gas is kept
away from any windows, doors, ventilation intakes, or other
openings that can allow exhaust gas to collect in a confined
area. Prevailing winds and air currents should be taken into
consideration when positioning generator.
A
WARNING
Generator produces hazardous voltage.
Failure to isolate generator from power utility can
result in death or injury to electric utility workers
due to backfeed of electrical energy.
• When using generator for backup power, notify utility company.
Use approved transfer equipment to isolate generator from
electric utility.
• Use a ground fault circuit interrupter (GFCI) in any damp or
highly conductive area, such as metal decking or steel work.
• DO NOT touch bare wires or receptacles.
• DO NOT use generator with electrical cords which are worn,
frayed, bare or otherwise damaged.
• DO NOT operate generator in the rain or wet weather.
• DO NOT handle generator or electrical cords while standing in
water, while barefoot, or while hands or feet are wet.
• DO NOT allow unqualified persons or children to operate or
service generator.
WARNING
Exhaust heat/gases can ignite combustibles,
structures or damage fuel tank causing a fire.
• Keep at least 5 ft. (1.5 m) clearance on all sides of generator
including overhead.

8BRIGGSandSTRATTON.COM
Features and Controls
Read this Operator’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.
A - Choke Lever — Used when starting a cold engine.
B - Rocker Switch — Set this switch to “On” before using
recoil starter. Set switch to “Off” to stop engine.
C - Air Cleaner — Protects engine by filtering dust and
debris out of intake air.
D - Recoil Starter — Used to start the engine.
E - Oil Drain Plug — Drain engine oil here.
F - Circuit Breakers (AC) — Push-to-reset circuit breakers
are provided to protect the generator against electrical
overload.
G - 120 Volt AC, 20 Amp, Duplex Receptacles — May be
used to supply electrical power for the operation of
120 Volt AC, 20 Amp, single phase, 60 Hz electrical,
lighting, appliance, tool, and motor loads.
H - 120/240 Volt AC, 20 Amp Locking Receptacle — May
be used to supply electrical power for the operation of
120 and/or 240 Volt AC, 20 Amp, single phase, 60 Hz
electrical, lighting, appliance, tool and motor loads.
J - Grounding Fastener — Consult your local agency having
jurisdiction for grounding requirements in your area.
K - Data Tag — Provides model, revision, and serial number
of generator. Please have these readily available when
calling for assistance.
L - Spark Arrester Muffler — Exhaust muffler lowers engine
noise and is equipped with a spark arrester screen.
M - Fuel Tank — Capacity of four (4) U.S. gallons (15 L).
N - Oil Fill Cap — Check and fill engine with oil here.
Items Not Shown:
Engine Identification — Provides model, type and code of
engine. Please have these readily available if calling for
assistance.
A
D
F
G
H
L
N
K
M
B
C
J
E

9
Cord Sets and Receptacles
Use only high quality, well-insulated, grounded extension
cords with the generator’s 120 Volt duplex receptacle.
Inspect extension cords before each use.
Check the ratings of all extension cords before you use
them. Extension cord sets used should be rated for 125 Volt
AC loads at 20 Amps or greater for most electrical devices.
Some devices, however, may not require this type of
extension cord. Check the operator’s manuals of those
devices for the manufacturer’s recommendations.
Keep extension cords as short as possible to minimize
voltage drop.
120/240 Volt AC, 20 Amp, Locking Receptacle
Use a NEMA L14–20 plug with this receptacle. Connect a
4–wire cord set rated for 250 Volt AC loads at 20 Amps (or
greater). You can use the same 4–wire cord if you plan to
run a 120 Volt load.
This receptacle powers 120/240 Volt AC, 60 Hz, single phase
loads requiring up to 3,500 watts of power (3.5 kW) at
14.5 Amps for 240 Volts or two independent 120 Volt loads
at 14.5 Amps each. The outlet is protected by push–to–reset
circuit breakers.
120 Volt AC, 20 Amp, Duplex Receptacles
Each duplex receptacle is protected against overload by a
push–to–reset circuit breaker.
Use each receptacle to operate 120 Volt AC, single–phase,
60 Hz electrical loads requiring up to 1,750 watts (1.75 kW)
at 14.5 Amps of current. Use cord sets that are rated for
125 Volt AC loads at 15 Amps (or greater).
WARNING
Overloaded electrical cords can overheat, arc,
and burn resulting in death, bodily injury, and/or
property damage.
• ONLY use cords rated for your loads.
• Follow all safeties on electrical cords.
NOTICE
Receptacles may be marked with rating value greater than
generator output capacity.
• NEVER attempt to power a device requiring more amperage
than generator or receptacle can supply.
• DO NOT overload the generator. See Don’t Overload Generator.
4-Wire Cord Set
240V
120V 120V
W (Neutral)
X (Hot)
Y (Hot)
NEMA L14-20 Ground (Green)

Operation
Starting the Engine
Disconnect all electrical loads from the generator. Use the
following start instructions:
1. Make sure unit is on a level surface.
IMPORTANT: Failure to start and operate the unit on a level
surface will cause the unit not to start or shut down during
operation.
2. Turn fuel valve to “On” position. Fuel valve handle
should be vertical (pointing toward ground) for fuel to
flow.
3. Push choke lever to “Choke” position.
4. Push engine rocker switch to “On”.
5. Grasp recoil handle and pull slowly until slight
resistance is felt. Then pull handle rapidly to overcome
compression, prevent kickback, and start engine.
IMPORTANT: If excessive fuel is present in the air/fuel
mixture causing a “flooded” condition, move the choke lever
to “Run” ( ) position and pull the handle repeatedly until
the engine starts.
6. Move choke lever to “Run” ( ) position a short
distance at a time over several seconds in warm
weather or minutes in cold weather. Let engine run
smoothly before each change. Operate with choke in
“Run” position.
NOTE: If the engine starts after 3 pulls but fails to run, or if
the unit shuts down during operation, make sure the unit is
on a level surface and check for the proper oil level in the
crankcase. This unit may be equipped with a low oil
protection device.
10 BRIGGSandSTRATTON.COM
WARNING
Starter cord kickback (rapid retraction) can result
in bodily injury. Kickback will pull hand and arm
toward engine faster than you can let go.
Broken bones, fractures, bruises, or sprains
could result.
• When starting engine, pull cord slowly until resistance is felt and
then pull rapidly to avoid kickback.
• NEVER start or stop engine with electrical devices plugged in
and turned on.
WARNING
Contact with muffler area can result in serious
burns.
Exhaust heat/gases can ignite combustibles,
structures or damage fuel tank causing a fire.
• DO NOT touch hot parts and AVOID hot exhaust gases.
• Allow equipment to cool before touching.
• Keep at least 5 feet (1.5 m) of clearance on all sides of
generator including overhead.
• Code of Federal Regulation (CFR) Title 36 Parks, Forests, and
Public Property require equipment powered by an internal
combustion engine to have a spark arrester, maintained in
effective working order, complying to USDA Forest service
standard 5100-1C or later revision. In the State of California a
spark arrester is required under section 4442 of the California
Public resources code. Other states may have similar laws.

Connecting Electrical Loads
1. Let engine stabilize and warm up for a few minutes
after starting.
2. Plug in and turn on the desired 120 Volt AC, single
phase, 60 Hz electrical loads.
NOTE:
• DO NOT connect 240 Volt loads to the 120 Volt duplex
receptacles.
• DO NOT connect 3-phase loads to the generator.
• DO NOT connect 50 Hz loads to the generator.
• DO NOT OVERLOAD THE GENERATOR. See Don’t
Overload Generator.
Stopping the Engine
1. Turn OFF and unplug all electrical loads from generator
panel receptacles. NEVER start or stop engine with
electrical devices plugged in and turned ON.
2. Let engine run at no-load for several minutes to
stabilize internal temperatures of engine and generator.
3. Push engine rocker switch to “Off” position.
4. Move fuel valve to “Off” position.
11
WARNING
Backfire, fire or engine damage could occur.
• DO NOT stop engine by moving choke control to “Choke”
position.
NOTICE
Exceeding generators wattage/amperage capacity can
damage generator and/or electrical devices connected to it.
• DO NOT exceed the generator’s wattage/amperage capacity. See
Don’t Overload Generator in the Operation section.
• Start generator and let engine stabilize before connecting
electrical loads.
• Connect electrical loads in OFF position, then turn ON for
operation.
• Turn electrical loads OFF and disconnect from generator before
stopping generator.

Don’t Overload Generator
Capacity
You must make sure your generator can supply enough
rated (running) and surge (starting) watts for the items you
will power at the same time. Follow these simple steps:
1. Select the items you will power at the same time.
2. Total the rated (running) watts of these items. This is
the amount of power your generator must produce to
keep your items running. See Wattage Reference Guide.
3. Estimate how many surge (starting) watts you will need.
Surge wattage is the short burst of power needed to
start electric motor-driven tools or appliances such as a
circular saw or refrigerator. Because not all motors start
at the same time, total surge watts can be estimated by
adding only the item(s) with the highest additional surge
watts to the total rated watts from step 2.
Example:
Total Rated (Running) Watts = 3075
Highest Additional Surge Watts = 1800
Total Generator Output Required = 4875
Power Management
To prolong the life of your generator and attached devices, it
is important to take care when adding electrical loads to your
generator. There should be nothing connected to the
generator outlets before starting its engine. The correct and
safe way to manage generator power is to sequentially add
loads as follows:
1. With nothing connected to the generator, start the
engine as described in this manual.
2. Plug in and turn on the first load, preferably the largest
load you have.
3. Permit the generator output to stabilize (engine runs
smoothly and attached device operates properly).
4. Plug in and turn on the next load.
5. Again, permit the generator to stabilize.
6. Repeat steps 4 and 5 for each additional load.
NEVER add more loads than the generator capacity. Take
special care to consider surge loads in generator capacity, as
described above.
* Wattages listed are approximate only. Check tool or
appliance for actual wattage.
12 BRIGGSandSTRATTON.COM
Tool or Appliance Rated (Running) Watts Additional Surge (Starting) Watts
Window Air
Conditioner 1200 1800
Refrigerator 800 1600
Deep Freezer 500 500
Television 500 —
Light (75 Watts) 75 —
3075 Total
Running Watts 1800 Highest Surge Watts
Wattage Reference Guide
Tool or Appliance Rated* (Running)
Watts
Additional
Surge
(Starting)
Watts
Essentials
Light Bulb - 75 watt 75 —
Deep Freezer 500 500
Sump Pump 800 1200
Refrigerator/Freezer - 18 cf 800 1600
Water Well Pump - 1/3 hp 1000 2000
Heating/Cooling
Window AC - 10,000 BTU 1200 1800
Window Fan 300 600
Furnace Fan Blower - 1/2 hp 800 1300
Kitchen
Microwave Oven - 1000 Watt 1000 —
Coffee Maker 1500 —
Electric Stove - Single Element 1500 —
Hot Plate 2500 —
Family Room
DVD/CD Player 100 —
VCR 100 —
Stereo Receiver 450 —
Color Television - 27 in 500 —
Personal Computer w/17 in
monitor 800 —
Other
Security System 180 —
AM/FM Clock Radio 300 —
Garage Door Opener - 1/2 hp 480 520
Electric Water Heater - 40 gallon 4000 —
DIY/Job Site
Quartz Halogen Work Light 1000 —
Airless Sprayer - 1/3 hp 600 1200
Reciprocating Saw 960 960
Electric Drill - 1/2 hp 1000 1000
Circular Saw - 7-1/4 in 1500 1500
Miter Saw - 10 in 1800 1800
Table Planer - 6 in 1800 1800
Table Saw/Radial Arm Saw - 10 in 2000 2000
Air Compressor - 1-1/2 hp 2500 2500

13
Maintenance
Maintenance Schedule
Follow the hourly or calendar intervals, whichever occurs first. More frequent service is required when operating in adverse
conditions noted below.
1Change oil after the first (5) operating hours and every 50 hours or every year, whichever occurs first, thereafter. Change oil sooner when operating under dirty or dusty conditions.
2Replace more often under dirty or dusty conditions.
General Recommendations
Regular maintenance will improve the performance and
extend the life of the generator. See an authorized Briggs &
Stratton dealer for service.
The generator’s 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
generator as instructed in this manual.
Some adjustments will need to be made periodically to
properly maintain your generator.
All service and adjustments should be made at least once
each season. Follow the requirements in the Maintenance
Schedule chart above.
NOTE: Once a year you should clean or replace the spark
plug and replace the air filter. A new spark plug and clean air
filter assure proper fuel-air mixture and help your engine run
better and last longer.
Emissions Control
Maintenance, replacement, or repair of the emissions control
devices and systems may be performed by any non-road
engine repair establishment or individual. See Emissions
Control System Warranty in Warranty section.
Generator Maintenance
Generator maintenance consists of keeping the unit clean
and dry. Operate and store the unit in a clean dry
environment where it will not be exposed to excessive dust,
dirt, moisture, or any corrosive vapors. Cooling air slots in
the generator must not become clogged with snow, leaves,
or any other foreign material.
NOTE: DO NOT use water or other liquids to clean generator.
Liquids can enter engine fuel system, causing poor
performance and/or failure to occur. In addition, if liquid
enters generator through cooling air slots, some of the liquid
will be retained in voids and cracks of the rotor and stator
winding insulation. Liquid and dirt buildup on the generator
internal windings will eventually decrease the insulation
resistance of these windings.
Cleaning
Daily or before use, look around and underneath the
generator for signs of oil or fuel leaks. Clean accumulated
debris from inside and outside the generator. Keep the
linkage, spring and other engine controls clean. Inspect
cooling air slots and openings on generator. These openings
must be kept clean and unobstructed.
Engine parts should be kept clean to reduce the risk of
overheating and ignition of accumulated debris:
• Use a damp cloth to wipe exterior surfaces clean.
• Use a soft bristle brush to loosen caked on dirt or oil.
• Use a vacuum cleaner to pick up loose dirt and debris.
Maintenance Schedule - Fill in Dates as You Complete Regular Service
Maintenance Task Service Intervals Service Dates
Before Each
Use Every 25 Hours or Yearly Every 50 Hours or Yearly Every 100 Hours or Yearly
Clean debris X
Check oil level X
Change engine oil X1
Service air cleaner X2
Service spark plug X
Clean cooling system X2
Prepare for storage If unit is to remain idle for longer than 30 days.
NOTICE
Improper treatment of generator can damage it and
shorten its life.
• DO NOT expose generator to excessive moisture, dust, dirt, or
corrosive vapors.
• DO NOT insert any objects through cooling slots.

Engine Maintenance
Oil
Oil Recommendations
NOTE: Use a high quality detergent oil classified “For Service
SF, SG, SH, SJ” or higher. DO NOT use special additives.
1. Choose a viscosity according to the table below:
NOTE: Synthetic oil meeting ILSAC GF-2, API certification
mark and API service symbol with “SJ/CF ENERGY
CONSERVING” or higher, is an acceptable oil at all
temperatures. Use of synthetic oil does not alter required oil
change intervals.
SAE 30: 40°F and higher (5°C and higher) is good for all
purpose use above 40°F, use below 40°F will cause hard
starting.
10W-30: 0 to 100°F (-18 to 38°C) is better for varying
temperature conditions. This viscosity improves cold
weather starting, but may increase oil consumption above
80°F (27°C).
*Check oil level frequently at higher temperatures.
Synthetic 5W-30: -20 to 120°F (-30 to 40 °C) provides the
best protection at all temperatures as well as improved
starting with less oil consumption.
5W-30: 40°F and below (5°C and below) is recommended
for winter use and works best in cold conditions.
Checking Oil Level
Oil level should be checked prior to each use or at least
every 5 hours of operation. Keep oil level maintained.
1. Make sure generator is on a level surface.
2. Clean area around oil fill and remove oil fill cap.
3. Verify oil is at the point of overflowing at oil fill
opening.
4. Replace and tighten oil fill cap.
Adding Engine Oil
1. Make sure generator is on a level surface.
2. Check oil level as described in Checking Oil Level.
3. If needed, slowly pour oil into oil fill opening to the
point of overflowing at oil fill.
4. Replace and tighten oil fill cap.
Changing Engine Oil
Change the oil after the first 5 hours of operation. Change oil
every 50 hours thereafter. If you are using your generator
under extremely dirty or dusty conditions, or in extremely
hot weather, change the oil more often.
KEEP OUT OF REACH OF CHILDREN. DON’T
POLLUTE. CONSERVE RESOURCES. RETURN
USED OIL TO COLLECTION CENTERS.
Change the oil while the engine is still warm from running,
as follows:
1. Make sure unit is on a level surface.
2. Disconnect the spark plug wire from the spark plug and
place the wire where it cannot contact spark plug.
3. Clean area around oil drain plug (A). The oil drain plug
is located at base of engine, opposite carburetor.
14 BRIGGSandSTRATTON.COM
AB
C
WARNING
Unintentional sparking can result in fire or
electric shock.
WHEN ADJUSTING OR MAKING REPAIRS TO YOUR GENERATOR
• Disconnect the spark plug wire from the spark plug and place
the wire where it cannot contact spark plug.
WHEN TESTING FOR ENGINE SPARK
• Use approved spark plug tester.
• DO NOT check for spark with spark plug removed.
CAUTION
Avoid prolonged or repeated skin contact with used motor
oil.
• Used motor oil has been shown to cause skin cancer in certain
laboratory animals.
• Thoroughly wash exposed areas with soap and water.

15
4. Remove oil drain plug and drain oil completely into a
suitable container.
5. Reinstall oil drain plug and tighten securely. Remove oil
fill cap.
6. Slowly pour oil (about 20 oz.) into oil fill opening (B) to
the point of overflowing (C) at oil fill cap. DO NOT
overfill.
7. Reinstall oil fill cap. Finger tighten cap securely.
8. Wipe up any spilled oil.
Service Air Cleaner
Your engine will not run properly and may be damaged if
you run it with a dirty air cleaner.
Replace the air cleaner every 25 hours of operation or once
each year, whichever comes first. Replace more often if
operating under dirty or dusty conditions.
To service the air cleaner, follow these steps:
1. Loosen screws (A) and remove air cleaner cover (B).
2. Carefully remove cartridge (C) from base (D).
3. Install clean (or new) air cleaner assembly inside cover.
Dispose of old filter properly.
4. Assemble air cleaner cover onto base and tighten
screws.
Service Spark Plug
Change the spark plug every 100 hours of operation or once
each year, whichever comes first. This will help your engine
to start easier and run better.
1. Clean area around spark plug.
2. Remove and inspect spark plug.
3. Check electrode gap with wire feeler gauge and reset
spark plug gap to recommended gap if necessary (see
Specifications).
4. Replace spark plug if electrodes are pitted, burned or
porcelain is cracked. Use the recommended
replacement spark plug. See Specifications.
5. Install spark plug and tighten firmly.
Service Spark Arrester
The engine exhaust muffler has a spark arrester screen.
Inspect and clean the screen every 100 hours of operation or
once each year, whichever comes first.
If you use your generator on any forest-covered, brush-
covered, or grass-covered unimproved land, it must have a
spark arrester. The spark arrester must be maintained in
good condition by the owner/operator.
A
B
C
D
WARNING
Contact with muffler area can result in serious
burns.
Exhaust heat/gases can ignite combustibles,
structures or damage fuel tank causing a fire.
• DO NOT touch hot parts and AVOID hot exhaust gases.
• Allow equipment to cool before touching.
• Keep at least 5 feet (1.5 m) of clearance on all sides of
generator including overhead.
• Code of Federal Regulation (CFR) Title 36 Parks, Forests, and
Public Property require equipment powered by an internal
combustion engine to have a spark arrester, maintained in
effective working order, complying to USDA Forest service
standard 5100-1C or later revision. In the State of California a
spark arrester is required under section 4442 of the California
Public resources code. Other states may have similar laws.

1. To remove muffler heat shield (A) from muffler (B),
remove four screws that connect guard to muffler
bracket.
2. Remove four screws that attach spark arrester screen
(C).
3. Inspect screen and obtain a replacement if torn,
perforated or otherwise damaged. DO NOT use a
defective screen. If screen is not damaged, clean it with
commercial solvent.
4. Reattach screen and muffler guard.
Air Cooling System
Over time debris may accumulate in cylinder cooling fins and
cannot be observed without partial engine disassembly. For
this reason, we recommend you have an authorized Briggs &
Stratton service dealer clean the cooling system per
recommended intervals (see Maintenance Schedule in
beginning of Maintenance section). Equally important is to
keep top of engine free from debris. See Clean Debris.
Carburetor Adjustment
The carburetor on this engine is low emission. It is equipped
with a non-adjustable idle mixture valve. Top speed has been
set at the factory. If adjustment is required, see an
authorized Briggs & Stratton service dealer.
16 BRIGGSandSTRATTON.COM
A
B
C
A
CAUTION
Excessively high operating speeds increase risk of injury
and damage to generator.
Excessively low speeds impose a heavy load.
• DO NOT tamper with governed speed. Generator supplies
correct rated frequency and voltage when running at governed
speed.
• DO NOT modify generator in any way.

17
Storage
The generator should be started at least once every seven
days and allowed to run at least 30 minutes. If this cannot be
done and you must store the unit for more than 30 days, use
the following guidelines to prepare it for storage.
Generator Storage
• Clean the generator as outlined in Cleaning.
• Check that cooling air slots and openings on generator
are open and unobstructed.
Long Term Storage Instructions
Fuel can become stale when stored over 30 days. Stale fuel
causes acid and gum deposits to form in the fuel system or
on essential carburetor parts. To keep fuel fresh, use Briggs
& Stratton FRESH START™ fuel stabilizer, available as a
liquid additive or a drip concentrate cartridge.
There is no need to drain gasoline from the engine if a fuel
stabilizer is added according to instructions. Run the engine
for 2 minutes to circulate the stabilizer throughout the fuel
system. The engine and fuel can then be stored up to
24 months.
If gasoline in the engine has not been treated with a fuel
stabilizer, it must be drained into an approved container. Run
the engine until it stops from lack of fuel. The use of a fuel
stabilizer in the storage container is recommended to
maintain freshness.
Change Oil
While engine is still warm, drain oil from crankcase. Refill
with recommended grade. See Changing Engine Oil.
Oil Cylinder Bore
• Remove spark plug and pour about 1/2 ounce (15 ml)
of clean engine oil into the cylinder.
• Install spark plug and pull starter handle slowly to
distribute oil.
Other Storage Tips
1. DO NOT store fuel from one season to another unless it
has been treated as described in Long Term Storage
Instructions.
2. Replace fuel container if it starts to rust. Rust and/or
dirt in fuel can cause problems if it’s used with this
unit.
3. Cover unit with a suitable protective cover that does not
retain moisture.
4. Store generator in clean, dry area.
WARNING
Fuel and its vapors are extremely flammable and
explosive.
Fire or explosion can cause severe burns or
death.
WHEN STORING FUEL OR EQUIPMENT WITH FUEL IN TANK
• Store away from furnaces, stoves, water heaters, clothes dryers
or other appliances that have pilot light or other ignition source
because they can ignite fuel vapors.
WHEN DRAINING FUEL
• Turn generator OFF and let it cool at least 2 minutes before
removing fuel cap. Loosen cap slowly to relieve pressure in
tank.
• Drain fuel tank outdoors.
• Keep fuel away from sparks, open flames, pilot lights, heat, and
other ignition sources.
• DO NOT light a cigarette or smoke.
WARNING
Storage covers can be flammable.
• DO NOT place a storage cover over a hot generator.
• Let equipment cool for a sufficient time before placing the cover
on the equipment.
WARNING
Unintentional sparking can result in fire or
electric shock.
• NEVER crank engine with spark plug removed.

18 BRIGGSandSTRATTON.COM
Troubleshooting
Problem Cause Correction
Engine is running, but no AC
output is available.
1. One of the circuit breakers is open.
2. Fault in generator.
3. Poor connection or defective cord set.
4. Connected device is bad.
1. Reset circuit breaker.
2. Contact authorized service facility.
3. Check and repair.
4. Connect another device that is in good
condition.
Engine runs good at no-load but
“bogs down” when loads are
connected.
1. Short circuit in a connected load.
2. Engine speed is too slow.
3. Generator is overloaded.
4. Shorted generator circuit.
1. Disconnect shorted electrical load.
2. Contact authorized service facility.
3. See Don’t Overload Generator in
Operation section.
4. Contact authorized service facility.
Engine will not start; or starts
and runs rough.
1. Rocker switch set to “Off”.
2. Fuel Valve is in “Off” position.
3. Dirty air cleaner.
4. Out of fuel.
5. Stale fuel.
6. Spark plug wire not connected to spark
plug.
7. Bad spark plug.
8. Water in fuel.
9. Flooded.
10. Excessively rich fuel mixture.
11. Intake valve stuck open or closed.
12. Engine has lost compression.
1. Set switch to “On”.
2. Turn fuel valve to “Open” position.
3. Clean or replace air cleaner.
4. Fill fuel tank.
5. Drain fuel tank and carburetor; fill with
fresh fuel.
6. Connect wire to spark plug.
7. Replace spark plug.
8. Drain gas tank and carburetor; fill with
fresh fuel.
9. Wait 5 minutes and re-crank engine.
10. Contact authorized service facility.
11. Contact authorized service facility.
12. Contact authorized service facility.
Engine shuts down when
running.
Out of fuel. Fill fuel tank.
Engine lacks power.
1. Load is too high.
2. Dirty air filter.
1. See Don’t Overload Generator in
Operation section.
2. Replace air filter.
Engine “hunts” or falters. Carburetor is running too rich or too lean. Contact authorized service facility.