Briggs & Stratton P4500 User manual

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Reproduction
Manual No. 80088462 Revision -
Outdoor Portable Generator
Operator’s Manual
Model Number _____________________________
Revision __________________________________
Serial Number ______________________________
Date Purchased ____________________________
Copyright © 2020. Briggs & Stratton Corporation
Milwaukee, WI, USA. All rights reserved.
1800-356-632 (AUS) or 0800-484-282 (NZ)
BRIGGSandSTRATTON.com.au

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Equipment Description
Table of Contents
Equipment Description.........................2
Features and Controls .........................5
Operation....................................7
Maintenance ................................13
Storage ....................................16
Troubleshooting/Specifications .................17
Warranty ...................................20
Symbols and Meanings
Signal Meaning
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
Indicates information considered important, but
not hazard-related.
Symbol Name Explanation
Safety Alert
Symbol
Indicates a potential personal injury
hazard.
Operator’s
Manual
Failure to follow warnings,
instructions and operator’s manual
could result in death or serious
injury.
Toxic Fumes
Engine exhaust contains carbon
monoxide, a poisonous gas that
could kill you in minutes. You
cannot smell it or see it.
Fire
Fuel and its vapors are extremely
flammable which could cause
burns or fire resulting in death or
serious injury.
Engine exhaust could cause fire
resulting in death or serious injury.
Electric
Shock
Generator could cause electrical
shock resulting in death or serious
injury.
Hot Surface Muffler could cause burns or
resulting in serious injury.
Equipment Description
Read this manual carefully and become familiar
with your outdoor generator. Know its applications,
its limitations, and any hazards involved. Save
these original instructions for future reference.
The outdoor generator is an engine–driven, revolving
field, alternating and direct current (AC & DC) 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 by a single-
cylinder engine.
To move generator, press button and pull handle out.
Press button to push handle back in.
The portable generator can be used to power outdoor
items using an extension cord or to restore home power
using a transfer switch. A transfer switch is a separate
device installed by a licensed electrician that allows
the portable generator to be cord connected, using the
receptacle, directly into your home’s electrical system.
Install a manual transfer switch as soon as possible if
generator will be used to provide home power restoration.
The generator is not intended to supply systems that are
legally required, for serious life safety or health hazards,
or where lack of power hampers rescue of fire-fighting
operations.
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.
NOTICE If you have questions about intended use,
contact an authorized service dealer. This equipment is
designed to be used with Briggs & Stratton® authorized
parts only.
System Ground
The generator neutral is floating, which means that the AC
stator winding is isolated from the grounding fastener and
the AC receptacle ground pins. Electrical devices, such as
RCD, requiring a grounded neutral may not operate properly
from this generator. Earthing of the generator is not required.
Special Requirements
There may be 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.
This generator is not intended to be used at a construction
site.

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Equipment Description
Connect Battery
You must connect the battery to the generator to enable
electric or remote starting. The display panel, LED’s and
e-choke system are powered by the battery also.
1. Remove screw and panel from in front of the battery.
2. Connect the two pin connector from the battery to the
generator.
Pairing Remote Start Fob to the Generator
The remote start fob needs to be paired with the generator
to remotely start your generator. To pair the fob with the
generator, follow the instructions below:
1. Press and hold the activate switch for 10 seconds and
the on/off button light will begin to flash blue.
2. Within 30 seconds, press and hold either button on
the remote start fob for 2 seconds. The on/off button
light will blink rapidly 3 times signaling the remote start
fob has been paired.
NOTICE All remote start fobs can be disconnected by
pressing both the on/off button and activate switch on the
generator at the same time for 10 seconds.
InfoHub™ Portable Wireless App
Download the InfoHub Portable App* to pair the
Bluetooth® enabled generator to your approved Android or
iOS smartphone and follow the in app instructions.
The generator is equipped with a status LED (located
under QPT button) to indicate the Bluetooth status. A
blinking blue LED indicates the generator is ready to be
paired to the App on your smartphone. A solid blue LED
indicates your generator is connected to the App on your
smartphone. A red LED indicates a fault in the generator’s
Bluetooth system, contact your closest Briggs & Stratton
authorized service dealer.
The InfoHub Portable App allows you to access information
about your generator directly through your smartphone.
The power usage displayed in the app is a percentage of
total generator output. Each receptacle is limited by the
receptacles capacity and circuit breaker. See Connecting
Electrical Loads.
* Data rates apply
The Bluetooth® word mark and logos are registered trademarks owned
by the Bluetooth SIG, Inc. and any use of such marks by Briggs & Stratton
Corporation is under license. Other trademarks and trade names are
those of their respective owners.
Activate Switch
On/Off Button

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Equipment Description
Activate Switch — Push to turn on the generator display.
Air Cleaner — Filters engine intake air.
Battery Cover — Remove to gain access to the battery.
Choke Lever — Used when manually starting a cold engine.
Fuel Cap — Add unleaded fuel here.
Fuel Valve — Used to turn fuel supply on and off to engine.
Grounding Fastener — Consult your local agency having
jurisdiction for grounding requirements in your area.
Hour Meter — The LED displays and records how many
hours your generator has run (up to 999.9).
Identification Label — Provides model and serial number of
generator.
Low Oil Indicator — This unit is equipped with a low oil
protection device. Oil must be at proper level for engine
to run. If the engine oil drops below a preset level, an oil
switch will stop the engine. Check oil level with dipstick.
Maintenance Cover — Remove to gain access to the
choke lever, spark plug and air cleaner.
Oil Drain Plug — Drain engine oil here.
Oil Fill Cap/Dipstick — Check and add engine oil here.
Oil Service Cover — Remove to gain access to the oil fill
and drain.
On/Off Button — Push and hold for one second to start or
stop generator.

this button to turn off the QPT.
Recoil Starter — Used to start the engine manually.
Retractable Handle — Press button and pull handle out to
move generator. Press button to push handle back in.
Spark Arrester Muffler/Exhaust — Lowers engine noise and
is equipped with a spark arrester screen.
Fuel Cap
Grounding Fastener
Choke Lever (under cover)
Air Cleaner (under cover)
Maintenance Cover
Battery Cover
Oil Fill Cap/Dipstick (under cover)
Oil Drain Plug (under cover)
Identification Label
Fuel Valve
Recoil Starter
Spark Arrester Muffler/Exhaust
Retractable Handle
Low Oil Indicator
QPT Button
Oil Service Cover
Hour Meter
Activate Switch
On/Off Button

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5
Features and Controls
12 Volt DC Receptacle — Use this receptacle to supply
power for 12 Volt DC accessories that are rated 60 watts
(5 Amp) or less. This receptacle is protected by a push to
reset circuit breaker.
230 Volt AC, 15 Amp Receptacle — May be used to supply
electrical power for the operation of 230 Volt AC, 15 Amp,
single phase, 50 Hz electrical, lighting, appliance, tool, and
motor loads.
Carbon Monoxide (CO) Shutdown Indicator Light —
Indicates the engine shutdown due to carbon monoxide
accumulation around the generator or a CO shutdown
system fault occurred.
Circuit Breaker — A “push to reset” circuit breaker is
provided to protect the generator against electrical
overload.
DC Circuit Breaker — The 12 Volt DC receptacle is
provided with a “push to reset” circuit breaker to protect the
generator against electrical overload.
USB Ports — Use ports to recharge most USB powered
devices.
Compare the illustrations with your generator to familiarize yourself with the locations of various controls and product warnings.
230 Volt AC, 15 Amp
Receptacle
12 Volt DC Receptacle
Circuit Breaker
Carbon Monoxide
(CO) Shutdown
Indicator Light
USB Ports
DC Circuit Breaker

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Exhaust/muffler
Point away from home
Features and Controls

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7
Operation
Operation
Step 1: Safe Location
Before starting the portable generator there are two equally
important safety concerns regarding carbon monoxide
poisoning and fire that must be addressed.
Operation Location to Reduce the Risk of
Carbon Monoxide Poisoning
The engine exhaust of all fossil fuel burning equipment,
such as a portable generator, contains carbon monoxide,
a poisonous gas that could kill you in minutes. You cannot
smell it, see it, or taste it. Even if you do not smell exhaust
fumes, you could still be exposed to carbon monoxide gas.
By law it is required in many states to have a carbon
monoxide alarm in operating condition in your home. A
carbon monoxide alarm is an electronic device that detects
hazardous levels of carbon monoxide. When there is
a buildup of carbon monoxide, the alarm will alert the
occupants by flashing visual indicator light and alarm.
Smoke alarms cannot detect carbon monoxide gas.
WARNING! Engine exhaust contains carbon
monoxide, a poisonous gas that could kill you in
minutes. You cannot smell it, see it, or taste it.
Even if you do not smell exhaust fumes, you could still be
exposed to carbon monoxide gas.
• Operate portable generator only outdoors, at least
6.1 m from occupied spaces with exhaust pointed
away to reduce the risk of carbon monoxide
accumulating.
• Install battery-operated carbon monoxide alarms or
plug-in carbon monoxide alarms with battery back-up
according to the manufacturer’s instructions. Smoke
alarms cannot detect carbon monoxide gas.
• Do not run portable generator inside homes, garages,
basements, crawlspaces, sheds, or other partially-
enclosed spaces even if using fans or opening doors
and windows for ventilation. Carbon monoxide can
quickly build up in these spaces and can linger for
hours, even after this product has shut off.
If you start to feel sick, dizzy, weak, or your homes carbon
monoxide alarm sounds while using this product, get to
fresh air right away. Call emergency services. You may
have carbon monoxide poisoning.
Carbon Monoxide Alarm(s)
Install carbon monoxide alarm
inside your home. Without
working carbon monoxide
alarms, you will not realize you
are getting sick and dying from
carbon monoxide poisoning.
To better educate yourself about all carbon monoxide risks,
go to www.takeyourgeneratoroutside.com.
6.1 m min.
Prevent Carbon Monoxide (CO) Poisoning
• Use outdoors at least 6.1 m from any home.
• Point exhaust away from all homes and occupied spaces.
• Install CO alarms inside your home.

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Operation
Operation Location to Reduce the Risk of Fire
WARNING! Exhaust heat/gases could ignite
combustibles, structures or damage fuel tank
causing a fire, resulting in death or serious injury.
• Portable generator must be at least 1.5 m from any
structure, overhang, trees, shrubs, or vegetation over
30.5 cm in height.
• Do not place portable generator under a deck or other
type of structure that may confine airflow. Smoke alarm(s)
must be installed and maintained indoors according to the
manufacturer’s instructions/recommendations.
• Carbon monoxide alarms cannot detect smoke.
• Do not place portable generator in manner other than
shown.
MUFFLER
1.5 m min.
6.1 m min.
1.5 m min.

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9
Step 2: Oil and Fuel
1. Move generator outdoors to a flat, level surface.
2. Turn dial and open cover over oil fill area.
3. Clean area around oil fill, remove oil fill cap/dipstick and
wipe with clean cloth. Replace dipstick. Remove and
check oil level.
NOTICE Do not screw in dipstick when checking oil level.
4. Verify oil is at full mark on dipstick. Replace and
tighten oil fill cap/dipstick.
5. If needed, see Maintenance for instructions to add oil.
6. Replace cover over oil fill area.
Low Oil Indicator
The low oil indicator system is designed to prevent engine
damage caused by not enough engine oil. If engine oil level
drops below a preset level, the red LED low oil indicator light
comes on and an oil level switch will stop the engine. If engine
stops or the red LED low oil indicator light comes on when
you try to start the generator, check the engine oil level.
Fuel must meet these requirements:
• Clean, fresh, unleaded fuel with a minimum of 91 RON
(87 octane/87 AKI).
• Gasoline with an ethanol content up to 10% is acceptable.
E10
E15
NOTICE Do not mix oil in fuel or modify engine to run on
alternate fuels. Use of unapproved fuels could damage
engine and will not be covered under warranty.
See High Altitude for 1524 m and above.
WARNING! Fuel and its vapors are extremely
flammable which could cause burns or fire
resulting in death or serious injury.
• Do not refuel during operation.
• Do not smoke during refueling.
• Turn engine off and let it cool at least 2 minutes before
removing fuel cap.
• Fill fuel tank outdoors. Keep fuel away from sparks, open
flames, pilot lights, heat, and other ignition sources.
Check fuel lines, tank, cap and fittings frequently for
cracks or leaks. Replace if necessary.
7. Slowly remove fuel cap to relieve pressure in tank.
8. Slowly add unleaded fuel to red max fill indicator in fuel
tank. Be careful not to fill above the indicator. This allows
adequate space for fuel expansion.
9. Install fuel cap and let any spilled fuel evaporate
before starting engine.
High Altitude
At altitudes over 1524 m, a minimum 89 RON (85 octane/85
AKI) fuel 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
762 m with the high altitude kit is not recommended.
Transporting
When transporting equipment, turn fuel valve to off ( )
position. Do not tip engine or equipment at an angle which
causes fuel to spill.
Operation
Max Fill Indicator
Oil Fill Cap/
Dipstick

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Operation
Step 3: Generator Start Up
Turn off all electrical loads connected to the generator. Use
the following start instructions:
1. Make sure unit is outdoors on a level surface.
NOTICE Failure to operate the unit on a level surface
may cause the unit to shut down.
2. Turn fuel valve clockwise to the on ( ) position.
Wireless Remote Starting
3. Press and hold on/off ( ) button for one second on
remote start fob to activate generator.
4. Within 5 seconds, press and hold start ( ) button for
one second. The on/off button on generator will blink
blue when a signal is received and generator will start.
NOTICE If the generator failed to start, the generator on/
off button will turn red for 5 seconds, then blink green for
up to one minute. Repeat step 4.
Manual or Electric Starting
3. Press the activate switch ( 1) to turn on the display. The
on/off button ( 2) will blink green for up to one minute.
NOTICE If the on/off button doesn’t blink green, the
battery is not connected or too low to start the generator.
NOTICE This unit is equipped with an e-choke system. An
e-choke system means there is no manual priming or choking
required as long as the battery is connected and charged.
4A. For electric starting; press and hold on/off button
(2) for one second while it’s blinking green to start
generator. Once generator starts, on/off button will
turn blue indicating generator is ready for use.
NOTICE If generator failed to start, on/off button will turn
red for 5 seconds, then blink green for up to one minute.
Repeat step 4A.
4B. For manual starting; grasp recoil and pull slowly until
slight resistance is felt. Then pull rapidly to start engine.
The e-choke will still engage with a low battery.
NOTICE If generator continues not to start, your battery
may be discharged too low and you will need to manually
choke the engine. Remove the maintenance cover and
position the choke lever to the middle position. The
e-choke will automatically turn the choke off once the
generator starts. Reinstall maintenance cover.
NOTICE If engine starts but fails to run, see Low Oil Indicator.
Remote Start Lockout
The remote start can be locked out so that your generator
can not be started remotely. To lock out remote start, press
the activate switch ( 1) to turn on the display, then press
and hold on/off button on generator for 10 seconds. The
on/off light will then blink red three times signifying remote
start function is locked out. To unlock, repeat.
Pressing either button on the remote start fob, the on/off
button will blink red 3 times when locked and will blink blue
3 times when unlocked.

This feature is designed to greatly improve fuel economy.
The QPT will automatically come on when the generator is
started. To turn off, press QPT button.
When QPT is on, engine speed increases as loads are
connected, and decreases as loads are removed.
When QPT is off, engine will run at full governed speed.
Step 4: Connecting Electrical Loads
To Restore Home Power Using a Transfer Switch
Connections to your home’s electrical system must use a
manual transfer switch installed by a qualified electrician.
The connection must isolate the generator power from
the utility power and comply with all applicable laws and
electrical codes.
To Restore Power Using Extension Cords
Generator may only be loaded up to rated power under the
rated conditions as shown on unit data tag. Reduce load
when using generator outside of rated conditions.
Use only high quality, well-insulated extension cables in
accordance with IEC 60245-4 with the generator’s 230
Volt AC outlets. Inspect extension cables before each use.
Check that all extension cables are suitably rated and are
not damaged. When using extension cords under 40° C,
the total length of cords for a cross section of 1.5 mm²
should not exceed 50 m or for a cross section of 2.5 mm²
should not exceed 80 m.
Choke Lever
Fuel Valve
On/Off Button
Activate Switch
12
On/Off Button
Start Button

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11
Operation
WARNING! Damaged or overloaded extension
cords could overheat, arc, and burn resulting in
death or serious injury.
• Electrical equipment, including cables and plug
connections, should not be defective.
1. Install carbon monoxide alarm(s).
2. When operating generator with extension cords, make
sure it is located in an open, outdoor area, at least 6.1
m from occupied spaces with exhaust pointed away.
3. Extension cords running directly into home, powering
indoor items IS NOT RECOMMENDED.
WARNING! Engine exhaust contains carbon
monoxide, a poisonous gas that could kill you in
minutes. You cannot smell it, see it, or taste it.
Even if you do not smell exhaust fumes, you could still be
exposed to carbon monoxide gas.
• Extension cords running directly into the home increase
your risk of carbon monoxide poisoning through
openings.
• If an extension cord running directly into the home is used
to power indoor items, the operator recognizes that this
increases the risk of CO poisoning to people inside the
home and assumes that risk.
4. Install a manual transfer switch as soon as possible
if generator will be used to provide home power
restoration.
5 Volt DC USB Ports
The maximum combined current available for the USB
ports is 2.1 Amps at 5 Volts. The USB port allows you to
recharge most USB powered devices with a USB charging
cable (not included).
NOTICE For maximum output, use the bottom USB port.
NOTICE For charging ITE (Information Technology
Equipment) only.
12 Volt DC Receptacle
The maximum current available for the 12 Volt DC
receptacle is 60 Watts (5 Amps). A DC circuit breaker
protects this receptacle from overloads. If an overload
occurs, the circuit breaker will trip (push button pops out).
Wait a few minutes and push the button in to reset the
circuit breaker.
230 Volt AC, 15 Amp Receptacles
These receptacles are protected against overload by an
internal overload system.
Use receptacles to operate 230 Volt AC, single–phase, 50
Hz electrical loads requiring up to 3,450 watts (3.45 kW)
at 15 Amps of current. Use cord sets that are rated for
230 Volt AC loads at 15 Amps (or greater).
Power Use
The power use monitor indicates percentage of total generator
load using LED’s. The first green LED indicates generator
is operating normally or producing more than 5% load. The
fourth green LED comes on after 50% load is reached. The last
yellow LED comes on after 100% load is reached.
Output Indicator
The green LED output indicator light comes on when
the generator is operating normally. It indicates that the
generator is producing power at the receptacles. It will also
start flashing red if you start to overload the generator.
Overload Alarm
The red LED overload alarm light comes on and cuts
power to the receptacles if you overload the generator.
The output indicator light will also go off. If the generator
was overloaded, you must turn off and unplug all electrical
loads, press the MAIN RESET button on the generator
control panel and then plug in and restart electrical loads
one at a time to continue in normal operating mode.
Output
Indicator
Main Reset
Power Use
Monitor
Overload Alarm
Fuel
Level
Monitor
QPT Button

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Operation
Generator Capacity
To make sure your generator can supply enough running
watts and starting watts for the items you will power at the
same time, follow these three simple steps:
1. Select the items you will power at the same time. See
following list for typical wattages.
* Typical wattages listed are approximate only. Check tool
or appliance for actual wattage.
** The momentary electrical current the generator can
provide to start electric motors, per Briggs & Stratton
standard 628K. It does not represent the power required to
continuously run electrical loads. It is the maximum current
that can momentarily be supplied when starting a motor,
multiplied by the generator’s rated voltage.
2. Total the running watts. This is the amount of power
your generator must produce to keep your items
running. See following example:
Example
Total running watts = 2125
Highest starting watts = 2100
Total generator watts required = 4225
3. Estimate the starting watts you will need. Because not
all motors start at the same time, total starting wattage
can be estimated by adding only the item with the
highest additional starting watts requirements to the
total running watts from step 2.
Power Management
To manage generator power, sequentially add loads as
follows:
1. With nothing connected to generator, start the engine
outdoors.
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 starting watts in generator capacity.
Carbon Monoxide (CO) Shutdown System
Automatically shuts down the engine when harmful levels
of carbon monoxide accumulate around the generator or
a CO shutdown system fault occurs. After shutdown, the
indicator light will blink for at least five minutes per the
chart below.
The CO shutdown system DOES NOT replace carbon
monoxide alarms. Install battery-powered carbon monoxide
alarm(s) in your home. Do not run generator in enclosed
areas.
Color/Pattern Description
Red
•• ••
Carbon monoxide accumulated around
generator. Move generator to an open,
outdoor area 6.1 m from occupied
spaces with exhaust pointed away.
Automatic shutoff is an indication
generator was improperly located. Air
out premises (e.g. open windows and
doors) before reoccupying.
If you start to feel sick, dizzy, weak, or
your homes carbon monoxide alarm
sounds while using this product, get to
fresh air right away. Call emergency
services. You may have carbon
monoxide poisoning.
Blue
• • •
CO shutdown system fault occured*.
See Briggs & Stratton authorized service
dealer.
*Blue light will blink for five seconds at the startup of generator to
show the CO shutdown system is functioning properly.
Step 5: Generator Shutdown
1. Turn off and unplug all electrical loads from generator
panel receptacles. Never stop engine with electrical
devices plugged in and turned on.
2. Let engine run at no-load for one minute to stabilize
internal temperatures of engine and generator.
3. Press the on/off button on the generator or either
button on the remote start fob.
Tool or Appliance Running Watts Starting Watts
Window AC - 10000 BTU 1000 2100
Refrigerator/Freezer 550 1350
Plasma Television 500 —
Light (75 Watts) 75 —
2125 Total
Running Watts
2100 Highest
Starting Watts
Tool or Appliance Running
Watts*
Starting
Watts**
Light Bulb - 75 Watt 75 -
Refrigerator/Freezer 550 1350
Window AC - 10,000 BTU 1000 2100
Microwave Oven - 1000 Watt 1000 -
Plasma Television - 50” 500 -
Laptop 250 -

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Maintenance
Maintenance
Maintenance Schedule
Follow the hourly or calendar intervals, whichever occurs
first. More frequent service is required when operating in
adverse conditions noted below.
1Service more often under dirty or dusty conditions.
2See any authorized dealer for service.
General Recommendations
Regular maintenance will improve the performance and
extend the life of the generator. See any Briggs & Stratton
Authorized Service Dealer for maintenance and 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.
All service and adjustments should be made at least once
each season. A new spark plug and clean air filter assure
proper fuel-air mixture and help your engine run better and
last longer. Follow requirements in Maintenance Schedule.
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.
However, to obtain ”no charge” emissions control service,
the work must be performed by a factory authorized dealer.
See Emissions Warranty.
• Generator is equipped with a G-trim engine.
Cleaning
Daily or before use, look around and underneath
the generator for signs of oil or fuel leaks. Clean any
accumulated debris. Keep area around muffler free from
any debris.
• Use a soft bristle brush to loosen caked on dirt or oil.
• Use a damp cloth to wipe exterior surfaces clean.
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.
Battery Maintenance
The generator is equipped with an automatic battery
charging circuit that charges the battery while the engine
is running. If the generator isn’t used frequently, the
battery should be connected to a trickle charger or battery
maintainer (not included) to keep it properly charged.
1. Remove panel from in front of the battery.
2. Disconnect the two pin connector from the battery to
the generator.
NOTICE Do not exceed 1.5 Amp charging rate.
3. Follow the instructions included with the trickle
charger or battery maintainer.
Remote Start FOB Batteries
Follow the instructions below if you need to replace the
batteries in the remote start fob:
1. Loosen and remove screws from cover, then remove
cover.
2. Remove the discharged batteries and insert two new
CR2016 lithium batteries with the “+” terminal facing
up.
3. Reinstall the cover and screws and tighten.
First 5 Hours
• Change engine oil
Every 8 Hours or Daily
• Clean debris
• Check engine oil level

• Clean engine air cleaner1,

• Change engine oil1
• Service spark plug
• Inspect muffler and spark arrester1, 2
• Check/Adjust valve clearance2
• Clean fuel tank and filter2
Every 250 Hours
• Clean combustion chamber1, 2

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Maintenance
Engine Maintenance
Oil Recommendations
We recommend the use of Briggs & Stratton Warranty
Certified oils for best performance. Other high-quality
detergent oils are acceptable if classified for service SF
or higher. Do not use special additives. See Common
Service Parts.
Outdoor temperatures determine the proper oil viscosity for
the engine. Use the chart to select the best viscosity for the
outdoor temperature range expected.
* Below 4°C the use of SAE 30 will result in hard starting.
** Above 27°C the use of 10W30 may cause increased oil
consumption. Check oil level more frequently.
Checking/Adding Engine Oil
Oil level should be checked prior to each use or at least
every 8 hours of operation. Keep oil level maintained.
1. Make sure generator is on a level surface.
2. Remove cover over the oil fill area.
3. Clean area around oil fill, remove dipsitck and wipe
with clean cloth. Replace dipstick. Remove and check
oil level.
NOTICE Do not screw in dipstick when checking oil level.
4. Verify oil is at full mark on dipstick.
5. If needed, slowly pour oil into oil fill opening to the
point of overflowing.
6. Replace and tighten dipstick.
NOTICE Do not attempt to crank or start engine before
it has been properly serviced with recommended oil. This
could result in an engine failure.
7. Replace cover over oil fill area.
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.
KEEP OUT OF REACH OF CHILDREN. DON’T
POLLUTE. CONSERVE RESOURCES. RETURN
USED OIL TO COLLECTION CENTERS.
Changing Engine Oil
If you are using your generator under extremely dirty or
dusty conditions, or in extremely hot weather, change the
oil more often.
Change the oil while the engine is still warm from running,
as follows:
1. Make sure unit is on a level surface.
2. Remove cover over the oil fill area.
3. Remove oil drain plug and drain oil completely into a
suitable container.
4. Reinstall oil drain plug and tighten securely. Remove
dipstick.
5. Slowly pour recommended oil (about 0.6 l) into oil fill
opening. Pause to permit oil to settle. Fill to Full mark
on dipstick.
6. Wipe dipstick clean each time oil level is checked. Do
not overfill.
7. Reinstall dipstick. Tighten cap securely.
8. Wipe up any spilled oil.
9. Replace cover over oil fill area.
Oil Drain
Plug

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15
Maintenance
Service Air Cleaner
WARNING! Fuel and its vapors are extremely
flammable which could cause burns or fire
resulting in death or serious injury.
• Do not start and run engine with air filter removed.
Your engine will not run properly and may be damaged
if you run it with a dirty air cleaner. Service more often if
operating under dirty or dusty conditions.
To service the air cleaner, follow these steps:
1. Loosen the two maintenance cover screws and
remove the maintenance cover.
2. Remove three air cleaner cover screws and slide air
cleaner assembly out.
3. Carefully remove foam air cleaner from the assembly.
4. Carefully remove breather filter from the base by
pulling it out towards you.
5. Wash foam air cleaner and breather filter in liquid
detergent and water only. Squeeze dry in a clean
cloth.
6. SATURATE foam air cleaner in clean engine oil and
squeeze in a clean cloth to remove excess oil.
7. Reinstall clean or new foam air cleaner inside
assembly.
8. Reinstall clean or new breather filter inside base.
9. Slide air cleaner assembly into base and tighten
screws.
10. Reinstall the maintenance cover and hand tighten the
cover screws.
Service Spark Plug
Changing the spark plug will help your engine to start
easier and run better.
1. Loosen the two maintenance cover screws and
remove the maintenance cover.
2. Clean area around spark plug and remove spark plug
boot.
3. Remove spark plug and inspect spark plug.
4. Replace spark plug if electrodes are pitted, burned
or porcelain is cracked. Use the recommended
replacement spark plug. See Common Service Parts.
5. Check electrode gap with wire feeler gauge and reset
spark plug gap to recommended gap if necessary
(see Specifications).
6. Install spark plug and tighten firmly. Reinstall spark
plug boot.
7. Reinstall maintenance cover and hand tighten screws.
Inspect Spark Arrester
Inspect spark arrester for damage or carbon blockage. If
damage is found or cleaning is needed, see a Briggs &
Stratton Authorized Service Dealer.
WARNING! Contact with muffler area could
cause burns resulting in serious injury.
• Do not touch hot parts.
Common Service Parts
Air Cleaner ...........................84001978
Breather Filter. . . . . . . . . . . . . . . . . . . . . . . . . 84001981
Spark Plug ...........................84001980
Engine Oil Bottle ........................100028
Synthetic Oil Bottle ......................100074
Contact an authorized service dealer or
BRIGGSandSTRATTON.com for a full list of parts and
diagrams.
Air Cleaner
Breather Filter
Screws

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Storage
Storage
If storing the unit for more than 30 days, use the following
guidelines to prepare it for storage.
Long Term Storage Instructions
1. Clean the generator as outlined in Cleaning.
2. Change engine oil while engine is still warm, drain oil
from crankcase. Refill with recommended grade. See
Changing Engine Oil.
3. Treat or drain fuel from generator as fuel can become
stale when stored over 30 days.
Each time you fill the container with fuel, add STA-BIL
360°® PROTECTION™ to the fuel as specified by the
manufacturer’s instructions. This keeps fuel fresh and
decreases fuel-related problems or contamination in the
fuel system.
It is not necessary to drain fuel from the engine when STA-
BIL 360°® PROTECTION™ is added as instructed. Before
storage, turn the engine ON for 2 minutes to move the fuel
and stabilizer through the fuel system.
If fuel in the engine has not been treated with STA-
BIL 360°® PROTECTION™, it must be drained into an
approved container. Then run the engine until it stops from
lack of fuel.
WARNING! Fuel and its vapors are extremely
flammable and explosive which could cause
burns, fire or explosion resulting in death or
serious injury.
• 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 could ignite fuel vapors.
• When draining fuel, turn generator engine 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.
• Check fuel lines, tank, cap and fittings frequently for
cracks or leaks. Replace if necessary.
4. Turn fuel valve counterclockwise to the off
( )
position.
5. Charge battery as outlined in Battery Maintenance.
6. Store generator in clean, dry area and cover with a
suitable protective cover that does not retain moisture.
WARNING! Storage covers could cause a fire
resulting in death or serious injury.
• Do not place a storage cover over a hot or running
generator. Let equipment cool for a sufficient time before
placing the cover on the equipment.

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Troubleshooting/Specifications
Problem Cause Correction
Engine is running, but no AC
output is available.
1. One of the circuit breakers is open.
2. Poor connection or defective cord set.
3. Connected device is bad.
4. Red LED light is steady. Generator is
overloaded or overheated.
1. Reset circuit breaker.
2. Check and repair.
3. Connect another device that is in
good condition.
4. See Generator Capacity. Press
MAIN RESET button on control
panel.
Engine runs well at no-load but
“bogs down” when loads are
connected.
1. Generator is overloaded. 1. See Generator Capacity.
Engine will not start; starts and
runs rough or shuts down when
running.
1. Fuel valve is in off
( ) position.
2. Low oil indicator light comes on. Low
oil level.
3. Dirty air cleaner.
4. Out of fuel.
5. Spark plug wire not connected to
spark plug.
6. Flooded with fuel.
7. Battery not connected or discharged.
1. Turn fuel valve to on
( ) position.
2. Fill crankcase to proper level or
place generator on level surface.
3. Clean or replace air cleaner.
4. Fill fuel tank.
5. Connect wire to spark plug.
6. Wait 5 minutes and re-crank engine.
7. Connect or charge battery.
Engine shuts down and CO
shutdown system LED blinks red
(•• ••).
1. Generator improperly located.
1. Move generator to an open,
outdoor area. Air out premises (e.g.
open windows and doors) before
reoccupying. See Carbon Monoxide
(CO) Shutdown System.
For all other issues, see a Briggs & Stratton authorized dealer.
Specifications
Rated Wattage* ........................................... 3,700
Starting Wattage** ......................................... 4,500
AC Current at 230 Volts ................................16.1 Amps
Frequency. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 Hz
Phase .............................................Single Phase
Displacement ............................................ 224 cc
Spark Plug Gap ...................................... 0.7-0.8 mm
Fuel Capacity ........................................13.25 Liters
Oil Capacity ...........................................0.6 Liters
Sound Pressure @ 7 m§ ...................................74 dBA
* Generator rated in accordance with CSA (Canadian Standards Association) standard C22.2 No. 100-14, Motors and Generators.
**Per Briggs & Stratton 628K.
§ Measured sound values in accordance to AS/NZS 3010:2017, Electrical Installations - Generating Sets

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Notes

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Notes

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Warranty
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Warranty service is available only through Briggs & Stratton Authorized Service Dealers. Most warranty repairs are handled routinely, but sometimes requests for
warranty service may not be appropriate. This warranty covers only defects in materials or workmanship. It does not cover damage caused by improper use or
abuse, improper maintenance or repair, normal wear and tear, or stale or unapproved fuel.
Improper Use and Abuse - The proper, intended use of this product is described in the Operator’s Manual. Using the product in a way not described in the
Operator’s Manual or using the product after it has been damaged will not be covered under this warranty. Warranty coverage will also not be provided if the serial
number on the product has been removed or the product has been altered or modified in any way, or if the product has evidence of abuse such as impact damage
or water/chemical corrosion damage.
Improper Maintenance or Repair - This product must be maintained according to the procedures and schedules provided in the Operator’s Manual, and
serviced or repaired using genuine Briggs & Stratton parts or equivalent. Damage caused by lack of maintenance or use of non-original parts is not covered by
warranty.
Normal Wear and Tear - Like most mechanical devices, your unit is subject to wear even when properly maintained. This warranty does not cover repairs when
normal use has exhausted the life of a part or the equipment. Maintenance and wear items such as filters, belts, cutting blades, and brake pads (except engine
brake pads) are not covered by warranty due to wear characteristics alone, unless the cause is due to defects in material or workmanship.
Stale or Unapproved Fuel - In order to function correctly, this product requires fresh fuel that conforms to the criteria specified in the Operator’s Manual. Engine
or equipment damage caused by stale fuel or the use of unapproved fuels (such as E15 or E85 ethanol blends) is not covered by warranty.
Other Exclusions - This warranty excludes damage due to accident, abuse, modifications, alterations, improper servicing, freezing or chemical deterioration.
Attachments or accessories that were not originally packaged with the product are also excluded. There is no warranty coverage on equipment used for
primary power in place of utility power or on equipment used in life support applications. This warranty does not include used, reconditioned, second-hand, or
demonstration equipment or engines. This warranty also excludes failures due to acts of God and other force majeure events beyond the manufacturer’s control.


** In Australia - Our goods come with guarantees that cannot be excluded under the Australian Consumer Law. You are entitled to a replacement or refund for a
major failure and for compensation for any other reasonably foreseeable loss or damage. You are also entitled to have the goods repaired or replaced if the goods
fail to be of acceptable quality and the failure does not amount to a major failure. For warranty service, find the nearest Authorized Service Dealer in our dealer
locator map at BRIGGSandSTRATTON.COM, or by calling 1300 274 447, or by emailing or writing to [email protected], Briggs & Stratton
Australia Pty Ltd, 1 Moorebank Avenue, NSW, Australia, 2170.
The warranty period begins on the date of purchase by the first retail or commercial consumer. “Consumer use” means personal residential household use by a
retail consumer. “Commercial use” means all other uses, including use for commercial, income producing or rental purposes. Once a product has experienced
commercial use, it shall thereafter be considered as a commercial use product for purposes of this warranty.
Save your proof of purchase receipt. If you do not provide proof of the initial purchase date at the time warranty service is requested, the manufacturing date of the
product will be used to determine the warranty period. Product registration is not required to obtain warranty service on Briggs & Stratton products.
Limited Warranty
Briggs & Stratton warrants that, during the warranty period specified below, it will repair or replace, free of charge, any part that is defective in material or
workmanship or both. Transportation charges on product submitted for repair or replacement under this warranty must be borne by purchaser. This warranty is
effective for and is subject to the time periods and conditions stated below. For warranty service, find the nearest Authorized Service Dealer in our dealer locator
map at www.briggsandstratton.com. The purchaser must contact the Authorized Service Dealer, and then make the product available to the Authorized Service
Dealer for inspection and testing.
There is no other express warranty. Implied warranties, including those of merchantability and fitness for a particular purpose, are limited to the
warranty period listed below, or to the extent permitted by law. Liability for incidental or consequential damages are excluded to the extent exclusion is
permitted by law. Some states or countries do not allow limitations on how long an implied warranty lasts, and some states or countries do not allow the exclusion
or limitation of incidental or consequential damages, so the above limitation and exclusion may not apply to you. This warranty gives you specific legal rights and
you may also have other rights which vary from state to state or country to country.**
Consumer Use Commercial Use
36 months 12 months
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80088366EN (Rev. A)