Standby Generator Systems
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Operator’s Manual
Liquid-Cooled
Generator System
This generator is certified in accordance with
UL (Underwriters Laboratories) 2200 (stationary
engine generator assemblies) and CSA (Canadian
Standards Association) standard C22.2 No. 100-04
(motors and generators).
80005276 Rev. C
1
Thank you for purchasing this quality-built Briggs & Stratton® generator. We’re pleased that you’ve placed your confidence in
the Briggs & Stratton brand. When operated and maintained according to the instructions in this manual, your generator will
provide many years of dependable service.
This manual contains safety information to make you aware of the hazards and risks associated with standby generators and
how to avoid them. Because we do not necessarily know all the applications this equipment could be used for, it is important
that you read and understand these instructions thoroughly before attempting to start or operate this equipment. This product
is only for use as an optional generator system which provides an alternate source of electric power and to serve loads such
as heating, refrigeration systems, and communication systems that, when stopped during any power outage, could cause
discomfort or inconvenience.
Save these original instructions for future reference.
This generator requires professional installation before use. Refer to the separate installation manual for full information.
Your installer should follow the instructions completely.
Where to Find Us
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You never have to look far to find Briggs & Stratton support and service for your generator. Consult your Yellow Pages. There
are thousands of Briggs & Stratton authorized service dealers worldwide who provide quality service. You can also contact
Technical Service by phone at 800-732-2989, or click on Find a Dealer at BRIGGSandSTRATTON.COM, which provides a list of
authorized dealers.
Generator and engine model and serial numbers should be recorded in the installation manual.
Briggs & Stratton Power Products Group, LLC
P.O. Box 702
Milwaukee, WI 53201-0702
Copyright © 2016. All rights reserved. No part of this material
may be reproduced or transmitted in any form without the express
written permission of Briggs & Stratton Power Products Group, LLC.
2BRIGGSandSTRATTON.COM
Table of Contents
Important Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . 4
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
For the Standby Owner: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
For the Installing Dealer/Contractor: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Owner Orientation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Fuel Factors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Generator Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Delivery Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Access Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
System Control Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
General Set Up Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Control Panel Prompts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
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Important Owner’s Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Engine Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
15 Amp Fuse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Automatic Operation Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Setting Exercise Timer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Servicing the System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Service Code Detection System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Generator Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Engine Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Changing Engine Oil and Oil Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Engine Drive Belt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Engine Air Cleaner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Generator Electrical System Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . 23
Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Fuel System Inspection and Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . 24
Exhaust System Maintenance and Inspection . . . . . . . . . . . . . . . . . . . . . . 24
When Calling for Assistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Maintenance Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Generator Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . 28
3
Save These Instructions
Important Safety Instructions
WARNING Running engine gives off carbon monoxide,
SAVE THESE INSTRUCTIONS - This manual contains
important instructions that should be followed during
installation and maintenance of the generator and batteries.
Safety Symbols and Meanings
Explosion
Fire
Electrical Shock
Toxic Fumes
Rotating Parts
Hot Surface
an odorless, colorless, poison gas.
Breathing carbon monoxide could result in death,
serious injury, headache, fatigue, dizziness,
vomiting, confusion, seizures, nausea or fainting.
• Operate this product ONLY outdoors in an area that will
not accumulate deadly exhaust gas.
• Keep exhaust gas away from any windows, doors,
ventilation intakes, soffit vents, crawl spaces, open garage
doors or other openings that can allow exhaust gas
to enter inside or be drawn into a potentially occupied
building or structure.
• Carbon monoxide detector(s) MUST be installed and
maintained indoors according to the manufacturer’s
instructions/recommendations. Smoke alarms cannot
detect carbon monoxide gas.
Auto Start
Explosive Pressure
Chemical Burn
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WARNING The engine exhaust from this product
contains chemicals known to the State of California to
cause cancer, birth defects, or other reproductive harm.
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WARNING  Certain components in this product and
related accessories contain chemicals known to the State
of California to cause cancer, birth defects, or other
reproductive harm. Wash hands after handling.
Rotating Belt/Pulley
Lift Hazard
Rotating Fan Blade
Read Manual
The safety alert symbol indicates a potential personal
injury hazard. A signal word (DANGER, WARNING, or
CAUTION) is used with the alert symbol to designate a degree
or level of hazard seriousness. A safety symbol may be used
to represent the type of hazard. The signal word NOTICE is
used to address practices not related to personal injury.
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, could
result in minor or moderate injury.
NOTICE addresses practices not related to personal injury.
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 system unsafe.
WARNING Storage batteries give off explosive hydrogen
gas during recharging.Slightest
spark will ignite hydrogen and
cause explosion, resulting in death
or serious injury. Battery electrolyte fluid contains acid and is
extremely caustic.Contact with battery contents could cause
severe chemical burns.A battery presents a risk of electrical
shock and high short circuit current.
• DO NOT dispose of battery in a fire. Recycle battery.
• DO NOT allow any open flame, spark, heat, or lit cigarette
during and for several minutes after charging a battery.
• DO NOT open or mutilate the battery.
• Wear protective goggles, rubber apron, rubber boots and
rubber gloves.
• Remove watches, rings, or other metal objects.
• Use tools having insulated handles.
4BRIGGSandSTRATTON.COM
•
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•
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WARNING  Propane and Natural Gas are extremely
flammable and explosive, which could
cause burns, fire or explosion resulting
in death or serious injury.
Install the fuel supply system according to NFPA 37 and
other applicable fuel-gas codes.
Before placing the generator into service, the fuel system
lines must be properly purged and leak tested.
After the generator is installed, you should inspect the fuel
system periodically.
NO leakage is permitted.
DO NOT operate engine if smell of fuel is present or other
explosive conditions exist.
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.
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WARNING Exhaust heat/gases could ignite
combustibles or structures resulting in
death or serious injury.
Contact with muffler area could cause
burns resulting in serious injury.
• DO NOT touch hot parts and AVOID hot exhaust gases.
• Allow equipment to cool before touching.
• Exhaust outlet side of weatherproof enclosure must
have at least 5 ft. (1.5m) minimum clearance from any
structure, shrubs, trees or any kind of vegetation.
• Standby generator weatherproof enclosure must be at
least 5 ft. (1.5m) from windows, doors, any wall opening,
shrubs or vegetation over 12 inches (30.5 cm) in height.
• Standby generator weatherproof enclosure must have a
minimum of 5 ft. (1.5 m) overhead clearance from any
structure, overhang, or trees.
• DO NOT place weatherproof enclosure under a deck or
other type of structure that may confine airflow.
• Use only flexible fuel line provided. Connect provided fuel
line to generator. DO NOT use with or substitute any other
flexible fuel line.
• Smoke detector(s) MUST be installed and maintained
indoors according to the manufacturer’s instructions/
recommendations. Carbon monoxide alarms cannot
detect smoke.
• Keep at least minimum distances shown in General
Location Guidelines to insure for proper generator cooling
and maintenance clearances.
• Replacement parts must be the same and installed in the
same position as the original parts.
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WARNING Generator produces hazardous voltage.
Failure to properly ground generator could result
in electrocution.
Failure to isolate generator from utility power
could result in death or serious injury to electric utility
workers due to backfeed of electrical energy.
• DO NOT touch bare wires or bare receptacles.
• DO NOT use generator with electrical cords which are
worn, frayed, bare or otherwise damaged.
• DO NOT handle generator or electrical cords while
standing in water, while barefoot, or while hands or feet
are wet.
• If you must work around a unit while it is operating,
stand on an insulated dry surface to reduce the risk of a
shock hazard.
• DO NOT allow unqualified persons or children to operate
or service generator.
• In case of an accident caused by electrical shock,
immediately shut down the source of electrical power and
contact the local authorities. Avoid direct contact with
the victim.
• Despite the safe design of the generator, operating this
equipment imprudently, neglecting its maintenance or
being careless could cause possible injury or death.
• Remain alert at all times while working on this equipment.
Never work on the equipment when you are physically or
mentally fatigued.
• Before performing any maintenance on the generator,
disconnect the battery cable indicated by a NEGATIVE,
NEG or (-) first. When finished, reconnect that cable last.
• After your system is installed, the generator may crank
and start without warning any time there is a power
failure. To prevent possible injury, always set the
generator’s system switch to OFF, remove the service
disconnect from the disconnect box AND remove the
15 Amp fuse BEFORE working on the equipment.
WARNING  Hazardous Voltage - Contact with power
lines could cause electric shock or
burns, resulting in death or serious
injury. Lifting Hazard / Heavy Object Could result in serious injury.
• If lifting or hoisting equipment is used, DO NOT contact
any power lines.
• DO NOT lift or move generator without assistance.
• DO NOT lift unit by roof as damage to generator
will occur.
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WARNING Hot pressurized coolant could cause
serious injury.
• DO NOT open radiator cap when hot.
• Before servicing, allow coolant to cool.
CAUTION Installing the 15A fuse could cause the
engine to start at any time without warning
resulting in minor or moderate injury.
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• Observe that the 15 Amp fuse has been removed from the
control panel for shipping.
• DO NOT install this fuse until all plumbing and wiring has
been completed and inspected.
NOTICE Improper treatment of generator could damage
it and shorten its life.
• Use generator only for intended uses.
• If you have questions about intended use, contact your
authorized dealer.
• Operate generator only on level surfaces.
• Adequate, unobstructed flow of cooling and ventilating air
is critical to correct generator operation.
• The access panels/door must be installed whenever the
unit is running.
• DO NOT expose generator to excessive moisture, dust,
dirt, or corrosive vapors.
• Remain alert at all times while working on this equipment.
Never work on the equipment when you are physically or
mentally fatigued.
• DO NOT start engine with air cleaner or air cleaner
cover removed.
• DO NOT insert any objects through cooling slots.
• DO NOT use the generator or any of its parts as a step.
Stepping on the unit could cause stress and break parts.
This may result in dangerous operating conditions from
leaking exhaust gases, fuel leakage, oil leakage, etc.
• 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.
-unit makes unusual noises.
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WARNING Moving parts could crush and cut. Starter and
other rotating parts could entangle
hands, hair, clothing, or accessories
resulting in serious injury.
NEVER operate generator without protective housings,
covers, or guards in place.
DO NOT wear loose clothing, jewelry or anything that
could be caught in the starter or other rotating parts.
Tie up long hair and remove jewelry.
Before servicing, remove 15 Amp fuse from control panel
and disconnect Negative (NEG or -) battery cable.
CAUTION  Excessively high operating speeds could
result in minor injury and/or equipment damage.
Excessively low speeds impose a heavy load on generator.
• 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.
6BRIGGSandSTRATTON.COM
Installation
For the Installing Dealer/Contractor:
For most applications, the installation manual contains all
the information required to properly install and start the
generator. This operator’s manual describes routine operation
and owner maintenance procedures.
If you need more information in this matter, please call at
800-732-2989 between 8:00 AM and 5:00 PM CT.
Owner Orientation
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This section provides generator 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 generator. 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.
Federal and 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, and the number of 90 degree
bends in the fuel supply increases, compensations in piping
and wiring materials must be made. 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 generator installation.
In some areas you may need to acquire electrical permits for
installing the generator, 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.
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We sincerely appreciate your patronage. For this reason, we
have 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 licensed electrical and
plumbing professionals should attempt standby generator
system installations. Installations must strictly comply with all
applicable codes, industry standards, laws and regulations.
Your standby generator is supplied with this “Operator’s
Manual” and a separate “Installation and Start-Up Manual.”
These are important documents and should be retained by
the owner after the installation has been completed.
Every effort has been made to ensure that information in this
manual is accurate and current. However, we reserve the
right to change, alter, or otherwise improve the product and
this document at any time without prior notice.
This product is only for use as an optional generator system
which provides an alternate source of electric power and
to serve loads such as heating, refrigeration systems, and
communication systems that, when stopped during any
power outage, could cause discomfort or inconvenience.
NOTICE This product does NOT qualify for either an
emergency standby or legally required standby system as
defined by NFPA 70 (NEC).
• Emergency generator systems are intended to automatically
supply illumination, power, or both, to designated areas
and equipment in the event of failure of the normal supply.
Emergency systems may also provide power for such
functions as ventilation where essential to maintain life,
where current interruption of the normal supply would
produce serious life safety or health hazards.
• Legally Required standby generator systems are intended
to automatically supply power to selected loads in the
event of failure of the normal source which could create
hazards or hamper rescue or fire-fighting operations.
For the Standby Owner:
To help you make informed choices and communicate
effectively with your installation contractor(s), read and
understand Owner Orientation in this manual before
contracting or starting your generator installation.
To arrange for proper installation, contact the store at which
you purchased your generator, your dealer, a licensed
electrician or your utility power provider.
The generator warranty is VOID unless the system is
installed by licensed electrical and plumbing professionals.
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).
7
Generator Location
An important consideration affecting the entire installation
is the type of fuel used by your generator. The system was
factory tested and adjusted using either natural gas or liquid
propane (LP vapor). For proper engine function, factors
that are inherent to each of these fuels, your location and
the duration of possible utility interruptions are important
considerations in the following fuel guidelines:
• 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), commercial
grade HD5 propane with a minimum fuel energy of 2500
BTUs/ft3 with maximum propylene content of 5% and
butane and heavier gas content of 2.5% and minimum
propane content of 90%.
The actual physical location of your 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.
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.
• Install generator outdoors in an area that will not
accumulate deadly exhaust gas.
• DO NOT install generator where exhaust gas could
accumulate and enter inside or be drawn into a
potentially occupied building or structure.
• By law it is required in many states to have a Carbon
Monoxide (CO) detector in operating condition in
your home. Carbon monoxide detector(s) (A) MUST
be installed and maintained indoors according to the
manufacturer’s instructions/recommendations. A CO
monitor is an electronic device that detects hazardous
levels of CO. When there is a buildup of CO, the monitor
will alert the occupants by flashing visual indicator light
and alarm. Smoke alarms cannot detect CO gas.
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WARNING  Propane and Natural Gas are extremely
flammable and explosive, which could
cause burns, fire or explosion resulting
in death or serious injury.
• The generator 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.
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Fuel Factors
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% 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.
A
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WARNING Exhaust heat/gases could ignite combustibles
or structures resulting in death or serious injury.
Carefully inspect the generator for any damage that may have
occurred during shipment.
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 and your
installer for claim procedures. Missing or damaged parts are
not warranted.
The standby generator system is supplied with:
• Fully-serviced coolant system
• Fully-serviced oil/lubricating system
• Synthetic oil (5W30)
• Flexible fuel line
• Installation and start-up manual
• Operator’s manual
• Spare access roof and door keys
• Spare 15 Amp ATO-type fuse
•Coolant
• Touch-up paint
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• Exhaust outlet side of weatherproof enclosure must
have at least 5 ft. (1.5 m) minimum clearance from any
structure, shrubs, trees, or any kind of vegetation.
• Standby generator weatherproof enclosure must be at
least 5 ft. (1.5 m) from windows, doors, any wall opening,
shrubs or vegetation over 12 in. (30.5 cm) in height.
• Standby generator weatherproof enclosure must have a
minimum of 5 ft. (1.5 m) overhead clearance from any
structure, overhang or trees.
• DO NOT place weatherproof enclosure under a deck or
other type of structure that may confine airflow.
• USE ONLY flexible fuel line provided. Connect provided
fuel line to generator. DO NOT use with or substitute any
other flexible fuel line.
• Smoke detector(s) MUST be installed and maintained
indoors according to the manufacturer’s instructions/
recommendations. Carbon monoxide alarms cannot
detect smoke.
• DO NOT place weatherproof enclosure in manner other
than shown in illustrations.
• E nsure exhaust gas is kept away from any windows,
doors, ventilation intakes, soffit vents, crawl spaces,
open garage doors or other openings that can allow
exhaust gas to enter inside or be drawn into a potentially
occupied building or structure. Neighboring structures
may be exposed to the engine exhaust from your standby
generator and must be considered when installing your
standby generator.
• W
ind and air currents should be taken into consideration
when positioning generator.
See the Installation Manual for full details on safe generator
location.
Delivery Inspection
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WARNING Running engine gives off carbon monoxide,
an odorless, colorless, poison gas.
Breathing carbon monoxide could result in death,
serious injury, headache, fatigue, dizziness,
vomiting, confusion, seizures, nausea or fainting.
• Operate this product ONLY outdoors in an area that will
not accumulate deadly exhaust gas.
• Keep exhaust gas away from any windows, doors,
ventilation intakes, soffit vents, crawl spaces, open garage
doors or other openings that can allow exhaust gas
to enter inside or be drawn into a potentially occupied
building or structure.
• Carbon monoxide detector(s) MUST be installed and
maintained indoors according to the manufacturer’s
instructions/recommendations. Smoke alarms cannot
detect carbon monoxide gas.
Not included:
• Carbon monoxide detector(s)
• Smoke detector(s)
• Starting battery
• Reinforced concrete pad
• Connecting wire and conduit
• Fuel supply valves/plumbing
• Crane, lifting straps, chains or cables, spreader bar
• Two 60” lengths of 2” Schedule 40 pipe (NOT conduit)
• Torque screwdriver, 5 to 50 inch-pound range
• Voltage/frequency meter
• Various special tools and equipment
9
Controls
25 kW Generator
ead this operator’s manual and Important Safety Instructions before operating your generator.
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Compare the illustrations of this model with your generator to familiarize yourself with the locations of various
controls and adjustments. Save this manual for future reference.
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Generator is pictured with access doors removed and internal
guard open for clarity.
A. Exhaust Port — High-performance muffler lowers
engine noise to comply with most codes.
B. Engine Label — Identifies engine model and type.
C. Oil Dip Stick — Used to check the engine oil level.
D. Roof Access Opening — Provides access to control
panel, oil filter, etc.
E. Circuit Breaker Enclosure — Equipped with removable
top to assist with conduit connection.
F. Control Panel — Used for various test, operation and
maintenance functions. See System Control Panel.
G. Air Cleaner — Protects engine by filtering dust and
debris out of intake air.
H. Fuel Selection Switch — Select natural gas or liquid
propane (LP vapor) supply.
J. Oil Fill Cap — Remove to service the engine with
recommended oil.
K. Coolant Fill — Provides access for filling engine
coolant.
L. Coolant Recovery Bottle — Provides visual indicator of
engine coolant level.
M. Fuel Inlet — Fuel supply is connected here.
N. ID Label — Identifies unit by serial number.
P. Rear Access Panel Opening — Provides access to
various components of generator.
R. Oil Filter — Filters engine oil to prolong system life.
S. Front Access Panel Opening — Provides access to
various components of generator.
T. Battery Location — Battery located for convenient
access.
10BRIGGSandSTRATTON.COM
A
C
E
Access Ports
D
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B
The generator is equipped with an enclosure that has several
access panels, as shown.
The access panels and the components located behind them
are listed below:
A -Roof (Control Panel, internal guard)
B -Front Access Panel (oil drain and oil filter)
C -Internal Guard (air filter, oil dipstick, coolant bottle)
D -Rear Access Panel (fuel regulator, fuel selector, and
engine starter)
E -Control Panel Cover (field wiring and control wires)
Each generator is shipped with a set of identical keys. These
keys fit in the lock on the front and rear removable panels.
The roof must be unlocked in order for it to open.
To open roof:
1. Insert key into lock (F) of front panel. Gently push
down on roof above the lock to aid in turning the key.
Turn key one quarter turn clockwise.
F
2. Lift roof to the open position.
To close roof:
1. Carefully lower roof down onto the unit.
2. Once lowered, insert key and turn counterclockwise to
secure roof.
3. Remove key from unit.
11
To open internal guard:
1. Ensure the roof is in the open position.
2. Remove the two bolts (G) that secure the internal guard
to the unit.
To remove rear panel:
1. Insert key into lock (J) of rear panel. Turn key one
quarter turn counterclockwise to unlatch.
J
G
To secure internal guard:
1. Move holding tab on roof latch to release the panel,
then lower the panel into place.
2. Secure the panel with two bolts.
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To remove front panel:
1. Remove the two bolts (H) that secure the panel to the unit.
To secure rear panel:
1. Slide panel into place on unit.
2. Secure the panel with keyed lock (turn clockwise to
latch).
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3. Lift up on panel and secure with tab on roof latch.
2. Open panel so that it clears the hinges.
3. Lift panel to remove from unit.
H
2. Lift panel to remove from unit.
To secure front panel:
1. Place panel in unit.
2. Secure the panel with two bolts.
12BRIGGSandSTRATTON.COM
System Control Panel
Compare this control panel illustration with your generator to familiarize yourself with the location of these important controls:
F
MENU
A
ESC
E
D
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B
AUTO
C
OFF
A - Menu/Programming Navigation Buttons — See Menu
section for details
B - USB Port — Authorized Dealer Service Use Only
C - Generator Operation Control Buttons —
• “AUTO” Normal operating position. Press and hold
button to put unit into Automatic mode. If an utility
power outage is sensed, the system will start the
generator. When utility power is restored, auto lets the
engine stabilize internal temperatures, shuts off the
generator, and waits for the next utility outage.
• “OFF” Turns off running generator, prevents unit from
starting, and resets any detected service codes.
OFF must be pressed and held for more than 5
seconds in order to reset service codes.
• “MANUAL” Used to manually start the generator.
• “AUTO” LED — LED will light when unit is placed into
Auto mode. LED will blink if exercise cycle is not set or
set to OFF.
MANUAL
D - 15 Amp Fuse — Protects the standby generator 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 ATO 15A fuse. One
spare fuse is supplied with the unit.
E - Cover — This protective cover must be opened to access
the fuse and the USB port.
F - Digital Display — Displays generator mode, menu
options, service codes, and service engine indicators.
13
Menu
The following chart shows the icons for the buttons that control the system control panel.
ENTER THE MENU (VIEW SETTINGS)
PRESS TO CONFIRM SELECTION WHEN PROGRAMMING.
MENU
ESCAPE (EXIT)
RETURN TO LAST MENU ITEM
RIGHT ARROW
TOGGLE THROUGH MENU OPTIONS
SETTING SYSTEM PARAMETERS
LEFT ARROW
TOGGLE THROUGH MENU OPTIONS
SETTING SYSTEM PARAMETERS
USED TO MANUALLY START THE GENERATOR. PRESS AND HOLD BUTTON TO
START THE GENERATOR.
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MANUAL MODE
TURNS OFF RUNNING GENERATOR, PREVENTS UNIT FROM STARTING, AND
RESETS ANY DETECTED FAULTS.
AUTOMATIC MODE
NORMAL OPERATING POSITION. PRESS AND HOLD BUTTON TO PLACE UNIT
INTO AUTOMATIC MODE. IF A UTILITY POWER OUTAGE IS SENSED, THE
SYSTEM WILL START THE GENERATOR. WHEN UTILITY POWER IS RESTORED, AUTO LETS THE ENGINE STABILIZE INTERNAL TEMPERATURES,
SHUTS OFF THE GENERATOR, AND WAITS FOR THE NEXT UTILITY POWER
OUTAGE.
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OFF
The following chart describes key sequences for accessing different programming modes;
GENERAL
SET-UP
PRESS AND HOLD [ARROW LEFT AND ARROW RIGHT]
FOR THREE SECONDS TO ENTER THE PROGRAM MODE.
ADVANCED
SETTINGS
PRESS AND HOLD [ARROW LEFT, ARROW RIGHT AND
ESC] FOR THREE SECONDS TO ENTER THE ADVANCED
SETTINGS MODE.
WIRELESS
LINK MODE
PRESS AND HOLD [MENU AND ESC] FOR THREE SECONDS TO ENTER THE WIRELESS LINKING MODE.
14BRIGGSandSTRATTON.COM
General Set Up Screen
For general set up, press and hold the left arrow and right arrow
for 3 seconds. Follow the prompts as outlined below.
NOTICE Date and Time were set at the factory and stored in the control panel memory. The Exercise Cycle was also set at
the factory. The default exercise cycle occurs on Tuesdays, at 2:00 P.M. Central Standard Time. To update or change these
settings, follow the steps below.
SET DATE
YEAR
FLASHING
MONTH
FLASHING
DAY##
FLASHING
or
or
or
HOURS
FLASHING
MINUTES
FLASHING
AM/PM
FLASHING
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SET TIME
or
or
or
EVENT LOG
or
If set to OFF, display will read:
EXERCISE CYCLE OFF
or
SET EXERCISE CYCLE
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or
or
DAY OF WEEK
FLASHING
HOURS
FLASHING
MINUTES
FLASHING
AM/PM
FLASHING
or
or
or
or
Display will scroll last service code event, date, time,
and temperature of when the event occurred.
or
IF DURING PROGRAMMING NO BUTTONS ARE PRESSED FOR 30 SECONDS,
THE CONTROL PANEL WILL AUTOMATICALLY EXIT THE PROGRAM MODE.
15
Control Panel Prompts
Automatic Mode
In Automatic Mode, the display screen will display via
scrolling text:
• GENERATOR READY - if the unit is in standby and
utility power is present.
• GENERATOR ON - if the unit is running and utility
power is not present.
• SERVICE CODE - if a system service code has been
detected.
AUTOMATIC MODE
GENERATOR READY OR SERVICE CODE DESCRIPTION
(When Generator NOT Running - Auto Mode)
GENERATOR ON
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General System Parameters
To view general system parameters, press the MENU button.
The following will scroll across the digital display and then
move to the next item:
• Run time
•Date
•Time
• Exercise Cycle date and start time
The user can press the LEFT ARROW or RIGHT ARROW at
any time to move to the next item.
The user can press ESCAPE to go back to GENERATOR
READY.
If no user inputs are made for 10 seconds after all the items
have been displayed, the control board will reset to
GENERATOR READY.
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(When Generator Running - Auto Mode)
(MENU)
RUN TIME
or
DATE
or
TIME
or
EXERCISE CYCLE
16BRIGGSandSTRATTON.COM
Operation
Automatic Operation Sequence
Engine Oil
NOTICE  Any attempt to crank or start the engine before it
has been properly serviced with the recommended coolant
and oil will result in equipment failure.
• Refer to the Maintenance section for coolant and oil fill
information.
• Damage to equipment resulting from failure to follow this
instruction will void engine and generator warranty.
The engine is shipped from the factory pre-run and filled
with synthetic oil (API SJ/CF 5W-30). This allows for system
operation in a wide range of temperature and climate
conditions. Before starting the engine, check oil level and
ensure that engine is serviced as described in Maintenance.
Battery
WARNING Battery posts, terminals and related
accessories contain lead and lead compounds - chemicals
known to the State of California to cause cancer and
reproductive harm. Wash hands after handling.
15 Amp Fuse
• Observe that the 15 Amp fuse has been removed from the
control panel for shipping.
• DO NOT install this fuse until all plumbing and wiring has
been completed and inspected.
The generator’s control board constantly monitors utility
voltage. Should utility voltage drop below a preset level, the
control board will signal the engine to crank and start.
When utility voltage is restored above a preset voltage level,
the engine is signaled to shut down.
The actual system operation is not adjustable and is
sequenced by sensors and timers on the control board,
as follows:
Utility Voltage Dropout Sensor
• This sensor monitors utility source voltage.
• If utility source voltage drops below about 70 percent of
the nominal supply voltage, the sensor energizes a
6 second timer. The timer is used to ‘sense’ brown‑outs.
• Once the timer has expired, the engine will crank
and start.
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The installer must supply a rechargeable 12 volt DC starting
battery. See Battery in Final Installation Considerations in the
installation manual.
With the battery installed, all wiring to transfer switch and
generator completed, 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 charge cannot be used to recharge a battery that is
completely discharged.
CAUTION  Installing the 15A fuse could cause the
engine to start at any time without warning
resulting in minor or moderate injury.
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Important Owner’s Considerations
The generator’s 15 Amp fuse is critical to correct system
operation. The 15 Amp fuse was removed at the factory.
Your installer will ensure the fuse is properly installed upon
completion of the installation.
Utility Voltage Pickup Sensor
This sensor monitors utility power voltage. When utility
voltage is restored above 80 percent of the nominal source
voltage, a time delay starts timing and the engine will go to
engine cool-down.
Engine Cool-down Timer
When utility power is sensed and the load transfers to the
utility source, the engine will go into a cool down period as
described below:
• If the generator has run for MORE than 5 minutes, once
the utility transfer occurs, the engine will continue to
run for about 1 minute before shutting down.
• If the generator has run for LESS than 5 minutes, once
the utility transfer occurs, the engine will continue to
run until 5 minutes has elapsed before shutting down.
17
The generator is equipped with an exercise timer. During the
exercise period, the unit runs for approximately 20 minutes
and then shuts down. Electrical load transfer DOES NOT
occur during the exercise cycle (unless an utility power
outage occurs).
The generator will only enter the exercise cycle if the unit is
in the AUTO mode and this exact procedure is followed.
Servicing the System
Before performing any generator maintenance, always
perform the following steps:
1. Set generator’s circuit breaker to its OFF position.
2. Press and hold the control board OFF button.
3. Remove 15 Amp fuse from control board.
4.Utility voltage is present at generator control board.
Disconnect power before servicing control board by
removing the fuses from the transfer switch.
5. After all servicing has been completed, replace fuses in
transfer switch, replace 15 Amp fuse in control board,
set circuit breaker ON and press and hold control board
AUTO button.
Service Code 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 temperature, over speed, and other conditions.
The generator’s control board shows service code
descriptions scrolling across the digital display. The service
code descriptions are listed below:
• Low Battery Voltage
• Low Oil Pressure
• Under Voltage
• Over Voltage
• Engine Does Not Start
• Low Frequency
• Engine Overspeed
• High Coolant Temperature
• Transfer Switch Service code
• Battery Charge Circuit
• Service Engine
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To set the exercise timer:
NOTICE The generator is set with a default code exercise
cycle setting of Tuesday at 2:00 P.M. Central Time. To
change the cycle setting, proceed to the following steps:
1. Choose the day and time you want your generator to
exercise.
2. Press and hold the left arrow and right arrow
simultaneously for 3 seconds to enter the General SetUp program mode. See General Set-Up flow chart in
Menu Section.
3. Verify and/or set the time and date on the unit.
4. Go to the SET EXERCISE prompt and hit the “OK”
button.
NOTICE Items will flash until they are selected.
Maintenance
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Setting Exercise Timer
SELECT DAY: Use the left or right arrow to toggle
through the days of the week, Once the day is selected,
hit the “OK” button.
SELECT HOUR: Use the left or right arrow to toggle
through between 1 and 12. Choose the hour of day you
want the generator to exercise then hit the “OK” button.
SELECT MINUTE: Use the left of right arrow to toggle
between :00 and :59. Choose the minute of the day you
want the generator to exercise then hit the “OK” button.
SELECT AM/PM: Use the left of right arrow to toggle
between AM and PM. Once chosen, hit the “OK” button.
NOTICE During the weekly exercise cycle, the generator will
run for 20 minutes, but it will not supply power to the home.
During the exercise cycle, the optional in-home monitor will
continue blinking the GENERATOR READY green LED.
If you want to change the day and time the unit exercises,
simply perform the procedure again.
To turn off the generator exercise cycle, go to the OFF
selection within the day of the week menu and press OK. The
display will then scroll: EXERCISE CYCLE OFF.
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The operator must reset the service code detection system
each time it activates. To do so, press the control board
OFF button for 5 seconds. Once the display turns off, leave
it off for at least 30 seconds. Remedy the service condition,
then return the standby generator to service by pressing and
holding the control board AUTO button and installing the 15
Amp fuse (if removed).
Low Battery Voltage
This service code is indicated by Low Battery Voltage
scrolling across the digital display. This condition occurs if
the battery voltage drops below the preset value. Causes for
this problem may be a service code battery or battery charge
circuit. See Battery Charge Circuit.
Remove the 15 Amp fuse and disconnect the battery from
the generator. Test the battery voltage. If voltage meets
specifications, take the battery to a local battery store for
analysis. Or contact your local service center for assistance.
Reinstall the battery (replace if necessary - see Battery in
Final Installation Considerations in the installation manual).
Then reset the service code detection system, as described
earlier.
Low Oil Pressure
This service code is indicated by Low Oil Pressure scrolling
across the digital display. The unit is equipped with an oil
pressure sensor that is monitored by the engine ECU. Should
oil pressure drop below the 50 psi range, the engine will shut
down.
To remedy the low oil pressure condition, add the
recommended oil to the FULL mark on the dipstick.
If the low oil pressure condition still exists, the engine will
start, then shut down again. The service code will appear. In
this case, contact an authorized dealer.
Under Voltage
This service code is indicated by Under Voltage scrolling
across the digital display. This condition is caused by a
restriction in the fuel flow, the electronic governing system
not functioning properly, a broken or disconnected sensing
lead, a failed alternator winding, the control board circuit
breaker is open, or the generator is overloaded.
To remedy the problem, contact your installer or an
authorized dealer.
Over Voltage
This service code is indicated by Over Voltage scrolling
across the digital display. This feature protects devices
connected to the transfer switch by shutting the generator
down if the generator output voltage happens to increase
above the preset limit.
This condition is most likely caused by a failed voltage
regulator, alternator excitation circuit or a load imbalance. To
remedy the problem, contact your installer or an
authorized dealer.
Engine Does Not Start
This service code is indicated by Engine Does Not Start
scrolling across the digital display. 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 10 seconds, pause for 10 seconds, and repeat.
If the system does not begin producing electricity after
approximately 2 minutes, the unit will stop cranking.
The most likely cause of this problem is no fuel supply or
incorrect fuel selector setting. See Fuel Selection Switch in
the installation manual. Check the internal and external fuel
shut off valves to ensure they are fully open. Other causes
could be failed spark plug(s), a loose electronic governor
connection, a 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.
Low Frequency
This service code is indicated by Low Frequency scrolling
across the digital display. This feature protects devices
connected to the transfer switch by shutting the generator
down if the engine runs slower than 55 Hz for three
seconds. To resolve the problem, contact your installer or an
authorized dealer.
Engine Overspeed
This service code is indicated by Engine Overspeed scrolling
across the digital display. To resolve the problem, contact
your installer or an authorized dealer.
Service Engine
The engine is equipped with on-board diagnostics that
monitor the operation of emission related components. If
an emission related problem has been detected, the system
control panel will display Service Engine. If Service Engine
displays while the generator is running, a diagnostic trouble
code may be set or a problem may exist in the system which
has caused the engine emissions to go outside the standards
certified by the Environmental Protection Agency. It is the
responsibility of the operator to contact an authorized service
technician to repair this condition.
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Reset Service Code Detection System
19
Generator Maintenance
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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.
Generator maintenance consists of keeping the unit
clean. 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. To prevent generator damage caused by
overheating, keep the enclosure cooling inlets and outlets
clean and unobstructed at all times.
Check the cleanliness of the unit frequently and clean when
dust, dirt, oil, moisture or other foreign substances are visible
on its exterior/interior surface. Inspect the air inlet and outlet
openings inside and outside the enclosure to ensure air flow
is not blocked.
DO NOT use direct spray from a garden hose to clean
generator. Water can enter the engine and generator and
cause problems.
NOTICE Improper treatment of generator could 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.
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High Coolant Temperature
This service code is indicated by High Coolant Temperature
scrolling across the digital display. The unit is equipped with
a coolant temperature sensor that is monitored by the engine
ECU. If the engine temperature increases past a determined
temperature, the service code is detected and the engine shuts
down.
Common causes for this condition include running the unit
with an access doors removed, obstructed air inlet or exhaust
port, or debris in the engine compartment or running unit
with roof open.
To resolve the problem, let the engine cool down and remove
any accumulated debris and obstructions. Ensure that the
access doors are installed and the roof is closed whenever
the unit is running. If problem persists, contact your installer
or authorized dealer.
Transfer Switch Service code
This service code is indicated by Transfer Switch Service
code scrolling across the digital display (if transfer switch is
equipped with service code detection).
The most likely cause of this service code is a blown fuse
in the transfer switch. To remedy the problem, contact your
installer or an authorized dealer.
Battery Charge Circuit
This service code is indicated by Battery Charge Circuit
scrolling across the digital display. The most likely cause is
an electrical problem with the control panel. To remedy the
problem, contact your installer or an authorized dealer.
Clean the generator as follows:
1. Press and hold the control board OFF button.
2. Remove 15 Amp fuse from control board.
3. Clean generator as desired.
• Use a damp cloth to wipe exterior surfaces clean.
• Use a soft, bristle brush to loosen caked on dirt, etc.
• Use a vacuum cleaner to pick up loose dirt and debris.
• Use low pressure air (not to exceed 25 psi) to blow
away dirt. Inspect cooling air slots and openings on
the generator. These openings must be kept clean and
unobstructed.
4. Reinstall 15 Amp fuse in control board.
5. Press and hold the control board AUTO button.
20BRIGGSandSTRATTON.COM
WARNING Unintentional sparking could cause fire or electric
shock resulting in death or serious injury.
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.
When all engine servicing is complete, replace 15 Amp fuse
in control board and reset exercise timer.
Engine Oil
Open roof and remove front panel to access the oil filter and
to add engine oil.
KEEP OUT OF REACH OF CHILDREN. DON’T
POLLUTE. CONSERVE RESOURCES. RETURN
USED OIL TO COLLECTION CENTERS.
NOTICE Any attempt to crank or start the engine before it has
been properly serviced with the recommended oil will result in
equipment failure.
• 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.
• Damage to equipment resulting from failure to follow this
instruction will void engine and generator warranty.
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.
Change the oil while the engine is still warm from running,
as follows:
1. Press and hold the control board OFF button.
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The engine is filled with synthetic oil (API SJ/CF 5W-30).
This allows for system operation in the widest range of
temperature and climate conditions.
We recommend the use of Briggs & Stratton Warranty
Certified oils for best performance. Other high-quality
detergent oils are acceptable if classified for service SJ or
higher. DO NOT use special additives.
Outdoor temperatures determine the proper oil viscosity for
the engine. Use the chart to select the best viscosity for the
outdoor temperature range expected.
Changing Engine Oil and Oil Filter
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Engine Maintenance
* Above 80°F (27°C) the use of 10W30 may cause increased oil
consumption. Check oil level more frequently.
2. Remove 15 Amp fuse from control board.
3. Place oil drain hose into an approved container.
4. Remove brass fitting from end of drain hose and drain
oil into an approved container.
5. When oil has drained, replace brass fitting on hose.
6. Place an approved container under oil filter.
7. Remove oil filter and dispose of properly.
8. Before installing a new oil filter, lightly lubricate the oil
filter gasket with fresh, clean oil.
9. Install the oil filter by hand until the gasket contacts
the oil filter adapter, then tighten the oil filter 1/2 to 3/4
turn.
10. Add oil.
11. Remove container from under oil filter and clean up any
spilled oil.
12. Start and run engine. As engine warms up, check for oil
leaks.
13. Stop engine, wait for oil to settle, check oil level and
add if necessary.
21
Engine Air Cleaner
The engine installed in this equipment uses drive belt(s) that
drive the water pump and alternator. The drive belt(s) are an
integral part of the cooling and charging system and should
be inspected according to the maintenance schedule. When
inspecting the belts, check for:
•Cracks
• Chunking of the belt
•Splits
• Material hanging loose from the belt
• Glazing, hardening
If any of these conditions exist, the belt should be replaced.
Once each year service the air cleaner, as follows. If
operating in a dusty environment, service more often.
1. Set control board system switch to OFF.
2. Remove 15 Amp fuse from control panel.
3. Remove filter cartridge - Remove the service cover by
disengaging three clips and detaching cover, starting
with the bottom two clips and the top clip last. Gently
move the end of the filter back and forth, then rotate
while pulling straight out.
4. Clean outlet tube and check Vacuator™ valve - Use a
clean cloth to wipe the filter sealing surface and the
outlet tube surfaces. Make sure that all contaminant is
removed before the new filter is inserted. Be careful to
not damage the sealing area on the tube.
Visually check and physically squeeze Vacuator valve
attached to service cover to make sure it is flexible and
not inverted, damaged or plugged.
5. Clean filter - Use a soft bristle brush to loosen dirt
and a vacuum cleaner to remove dirt and debris. Low
pressure air (not to exceed 25 psi) may also be used to
blow away dirt. Replace filter cartridge if any holes are
detected in filter media.
6. Install clean filter properly - Insert the filter carefully.
Seat the filter by hand, making certain it is completely
into the air cleaner housing before securing the cover
in place. To complete a tight seal, apply pressure by
hand at the outer rim of the filter, not the flexible center.
(Avoid pushing on the center of the urethane end cap.)
No cover pressure is required to hold the seal.
NEVER use the service cover to push the filter into
place! Using the cover to push the filter in could cause
damage to the housing, cover, or fasteners and will void
the warranty. If the service cover hits the filter before
it is fully in place, remove the cover and push the filter
(by hand) further into the air cleaner and try again. The
cover should go on with no extra force.
7. Reinstall service cover - Once the filter is in place,
reinstall the service cover, positioning the cover with
the arrow and the word TOP to the top. Fasten the top
clip first, the bottom two clips last. Make sure that all
mounting bands, clamps, bolts, and connections in the
entire air cleaner system are tight and verify absence of
holes in piping - repair if needed.
8. Replace 15 Amp fuse in control panel.
9. Set control board system switch to ON.
Engine Coolant System
It is important that the cooling system of the engine be
maintained properly to ensure proper performance and
longevity.
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WARNING Hot pressurized coolant could cause
serious injury.
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Engine Drive Belt
• DO NOT open radiator cap when hot.
• Before servicing, allow coolant to cool.
NOTICE Alcohol or methanol based anti-freeze or plain
water are not recommended for use in the cooling system at
any time.
The cooling system must be maintained according to the
recommended maintenance schedule and inspection should
include:
• The regular removal of dust, dirt, and debris from the
radiator core and fan shroud.
• Inspection of coolant hoses and components for leaks,
especially at the radiator hose connections. Tighten
hose clamps if necessary.
• Check radiator hoses for swelling, separation,
hardening, cracks, or any type of deterioration.
• Inspect the radiator cap to ensure proper sealing.
Coolant
With the engine cold, check the coolant level in the coolant
recovery bottle (see Controls). Specifications for the coolant
system can be found in the Maintenance chart of this manual.
Coolant Specification - ethylene glycol 50-50 mixture w/
distilled water.
22BRIGGSandSTRATTON.COM
WARNING Battery posts, terminals and related
accessories contain lead and lead compounds - chemicals
known to the State of California to cause cancer and
reproductive harm. Wash hands after handling.
Servicing of batteries is to be performed or supervised
by personnel knowledgeable of batteries and the
required precautions. Keep unauthorized personnel away
from batteries.
Servicing the Battery
If it is necessary to service the battery, proceed as follows:
1. Press and hold the control board OFF button.
2. Remove 15 Amp fuse from control panel.
3. Service or replace battery as required. See Battery
in Final Installation Considerations in the installation
manual for specific battery needed.
4. Connect red battery cable to battery positive terminal
(indicated by POSITIVE, POS, or (+)).
6. Connect black negative battery cable to negative battery
terminal (indicated by NEGATIVE, NEG, or (-).
7. Ensure hardware on both positive and negative battery
terminals is secure.
8. Reinstall 15 Amp fuse in control panel.
9. Press and hold the control board AUTO button.
DON’T POLLUTE. CONSERVE RESOURCES,
RETURN USED BATTERY TO RECYCLING
COLLECTION CENTER.
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The generator’s electrical system incorporates computers to
control various related components. The electrical system
connections and ground circuits require good connections.
Follow the recommended maintenance schedule located in
the Maintenance section of this manual.
When inspecting the electrical system, check the following:
• Check positive (+) and negative (-) battery cables for
corrosion, rubbing, chafing, burning, and ensure tight
connections at both ends.
• Check battery for cracks or damage to the case. Replace
as necessary.
• Inspect engine wire harness for rubbing, chafing,
pinching, burning, and cracks or breaks in the wiring.
• Verify that the engine harness connectors are correctly
locked in.
• Inspect ignition coil wire for hardening, cracking,
chafing, burning, separation, and split boot covers.
• Inspect spark plug wires for hardening, cracking,
chafing, burning, separation, and split boot covers.
• Replace spark plugs at the required intervals per the
recommended maintenance schedule.
• Verify that all electrical components are securely
mounted to the engine or chassis.
• Verify that any additional electrical services installed by
the owner are properly installed in the system.
Battery
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Generator Electrical System Maintenance
Charging the Battery
If it is necessary to charge the battery, proceed as follows:
1. Press and hold the control board OFF button.
2. Remove 15 Amp fuse from control board.
3. Disconnect negative battery cable from negative battery
terminal (indicated by NEGATIVE, NEG, or (-)).
4. Charge battery with battery charger at 2 Amps until
battery holds 12 Volts. DO NOT exceed 13.7 volts
when charging.
NOTICE DO NOT use a battery booster to quick charge a low
battery.
5. Connect negative battery cable to negative battery
terminal (indicated by NEGATIVE, NEG, or (-)).
6. Ensure hardware on both positive and negative battery
terminals is secure.
7. Reinstall 15 Amp fuse in control board.
8. Press and hold the control board AUTO button.
23
Natural Gas/Propane Fuel System
The fuel system installed on this commercial grade
engine has been designed to various standards to ensure
performance and reliability. To ensure compliance to these
standards, follow the recommended maintenance schedule
contained in this section.
Pressure Regulator Maintenance and Inspection
NOTICE The pressure regulator components have been
specifically designed and calibrated to meet the fuel system
requirements of the engine.
When inspecting the exhaust system, check the following:
• Inspect exhaust manifold at the cylinder head for leaks
and that all retaining bolts and shields (if used) are in
place.
• Inspect manifold to exhaust pipe fasteners to ensure
they are tight and that there are not exhaust leaks.
Repair as necessary.
• Inspect the oxygen sensor electrical connector to ensure
connector is seated and locked, check wires to ensure
there is no cracking, splitting, chaffing, or burning.
Replace or replace if necessary.
• Inspect exhaust pipe connection for leaks. Repair if
necessary.
Engine Exterior
Periodically inspect the engine exterior for contamination
and potential damage from dirt, leaves, rodents, spider webs,
insects, etc., and remove.
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If the regulator fails to operate or develops a leak, it should
be repaired or replaced with the OEM recommended
replacement parts. When inspecting the regulator, check for
the following items:
• Check for any fuel leaks at the inlet and outlet fittings.
• Check for any fuel leaks in the regulator body.
• Check to ensure the regulator is securely mounted and
the mounting bolts are tight.
• Check the regulator for external damage.
Exhaust System Maintenance and Inspection
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Fuel System Inspection and Maintenance
Mixer/Throttle Control Device Maintenance and Inspection
NOTICE The mixer and throttle body components have been
specifically designed and calibrated to met the fuel system
requirements of the engine.
When inspecting the mixer and throttle body, check for the
following items:
NOTICE A dirty air cleaner may significantly alter the mixer
performance.
• Leaks at all fittings.
• Ensure the mixer and throttle body are securely
mounted.
• Inspect air cleaner element according to the
recommended maintenance schedule found in this
section.
• Inspect air inlet hose connection and clamp. Inspect
hose for cracking, splitting, or chaffing. Replace if any
of these conditions exist.
• Check fuel lines for cracking, splitting, or chaffing.
Replace if any of this conditions exist.
• Check for leaks at the throttle body and intake manifold.
24BRIGGSandSTRATTON.COM
When Calling for Assistance
You must have the following information at hand if it is
necessary to contact a local service center regarding service
or repair of this unit:
1. Obtain the unit Model Number and Serial Number from
the unit ID label. See Controls for location of the label
or refer to the information recorded on the inside front
cover of the installation manual.
2. Obtain the engine identification numbers from the
engine label. See the Installation manual for location of
this information.
Storage
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The generator system is designed for long term service as
a standby generator. 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 Technical
Services at 800-732-2989, between 8:00 AM and 5:00 PM CT
for specific recommendations.
25
Maintenance Chart
This maintenance schedule represents the manufacturer’s recommended maintenance intervals to maintain proper engine/
equipment function. Federal, State, or Local regulations may require additional or more frequent inspection or maintenance
intervals than those specified below. Check with the authority having jurisdiction for details.
Perform the following maintenance on the engine at the hours indicated and at equivalent hour intervals thereafter.
Maintenance
Interval Hours
After
each
use
1000
1500
2000
2500
3000
3500
4000
4500
5000
General Maintenance Section
Visual check for fluid leaks
X
Check engine oil level
X
Check coolant level
X
Change engine oil and oil filter
Every 100 hours or Annually
Check fuel system for leaks
Inspect accessory drive belts
Before and after any service or maintenance activity
X
X
X
X
Inspect electrical system wiring
X
X
Inspect all vacuum lines and fitting
X
X
Timing belt
Contact customer service for details
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Engine Coolant Section
Clean debris from radiator core
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Every 100 hours or 60 days of operation
Change coolant - ethylene glycol 50-50 mixture w/ distilled
water
X
Inspect coolant hoses
X
Replace coolant hoses and accessory drive belt
Engine Ignition System
X
X
X
X
X
X
X
Every 2,000 Hours or two years, whichever occurs first
Inspect battery case for leaks/damage
X
X
X
X
X
Inspect battery cables
X
X
X
X
X
X
X
X
Inspect all electrical connector retainer locks
Replace spark plugs
X
X
Inspect crank sensor timing wheel
Clean secondary ignition coil tower
Check spark plug wires
Replace spark plug wires
X
X
X
Every 100 hours or Annually
X
X
X
X
X
X
X
Fuel System Maintenance
Inspect air cleaner
Every 200 hours (or every 100 hours in severe environments) or Annually
Check fuel shut-off valve function
X
X
Check fuel shut-off solenoid valve function
X
X
Check air induction system
X
Check intake manifold
X
X
X
Engine Exhaust System
Inspect exhaust manifold and piping
X
X
Check oxygen sensor connector
X
X
26BRIGGSandSTRATTON.COM
Troubleshooting
Engine is running, but no AC output
is available.
Cause
1. Circuit breaker open or defective.
1. Reset or replace circuit breaker.
2. Fault in generator control panel.
2. Contact local servicing dealer.
3.Poor wiring connections or defective 3. Check and repair.
transfer switch.
1. Short circuit in a connected load.
2. Generator is overloaded.
Engine runs good at no-load but “bogs 3. Shorted generator circuit.
down” when loads are connected. 4.Fuel pressure or mixture is incorrect.
5. Kinked fuel line.
1. 15 Amp fuse missing or blown.
2. Fuel supply turned off or depleted.
3. Failed battery.
4. Fuel pressure is incorrect
1. Disconnect shorted electrical load.
2. Turn off one or more loads.
3. Contact local servicing dealer.
4.See Gaseous Fuel System in the
Installation Manual.
5.Remove kink. Replace if necessary.
1.Install (new) 15 Amp fuse. See
System Control Panel.
2.Open fuel valve(s); check
propane tank.
3. Replace battery.
4.See Gaseous Fuel System in the
Installation Manual.
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Engine will not start; or starts and
runs rough.
Correction
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Problem
Engine shuts down during operation.
1. Fuel supply turned off or depleted.
2. Fault code displayed on controller.
1. Check fuel valves, fill propane tank.
2. Refer to Fault Detection System.
Loss of power on circuits.
1. Generator circuit breaker is open.
2. Transfer switch problems.
1. Reset circuit breaker.
2. See the transfer switch manual.
27
Generator Specifications
076180 (25kW)
Rated Maximum Load Current (at 40°C/104°F, LP or NG):������������������������������ 125 Amps at 1.0pf
Rated AC Voltage������������������������������������������������������������������������������������������������ 120/240 Volts
Phase ������������������������������������������������������������������������������������������������������������������ Single phase
Rated Frequency������������������������������������������������������������������������������������������������ 60 Hertz
Normal Operating Range ���������������������������������������������������������������������������������� -20°F (-28.8°C) to 104°F (40°C)
Output Sound Level per ISO 3744 �������������������������������������������������������������������� 69 dB(A) at 23 ft. (7 m) at no load
����������������������������������������������������������������������������������������������������������������������������� 70 dB(A) at 23 ft. (7 m) at normal load
Shipping Weight�������������������������������������������������������������������������������������������������� 1,086 lb (493 kg)
Spark Plug Gap�������������������������������������������������������������������������������������������������� 0.030” (0.76 mm)
Intake Valve Clearance �������������������������������������������������������������������������������������� 0.008-0.009” (0.20 - 0.23 mm)
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Exhaust Valve Clearance������������������������������������������������������������������������������������ 0.009-0.011” (0.23-0.28 mm)
This generator is certified in accordance with UL (Underwriters Laboratories) 2200 (stationary engine generator assemblies) and
CSA (Canadian Standards Association) standard C22.2 No. 100-04 (motors and generators)
28BRIGGSandSTRATTON.COM