FIRMAN and logo design are trademarks or
registered trademarks of FIRMAN. All rights
reserved.
Serial Number
333733003-00
Purchase Date
MODEL #WT03571
TRI-FUEL
INVERTER GENERATOR
ATTACH YOUR RECEIPT
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567
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IMPORTANT, RETAIN FOR FUTURE REFERENCE: READ CAREFULLY
Thank you for purchasing this FIRMAN product.
Questions, problems or missing parts?
Before returning, contact us on:
844-347-6261, 8 a.m. - 8 p.m., EST, Monday - Sunday or
at www.rmanpowerequipment.com.
2
TABLE OF CONTENTS
Introduction.......................................................................................................................................................
Features, Controls and On -Product Hazard Labels...................................................................................
Operating Instructions.....................................................................................................................................
Maintenance - Storage....................................................................................................................................
Troubleshooting- Specications....................................................................................................................
Replacement Parts Lists .................................................................................................................................
Wiring Diagram ................................................................................................................................................
Service - Warranty ...........................................................................................................................................
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14
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49
50
FCC DECLARATION
Supplier’s Declaration of Conformity
47 CFR § 2.1077 Compliance Information
FIRMAN WT03571 TRI FUEL INVERTER GENERATOR
1. This device complies with Part 15 of the FCC Rules. Operation is subject to the following two
conditions:
1a. This device may not cause harmful interference.
1b. This device must accept any interference received, including interference that may cause
undesired operation.
2. Changes or modications not expressly approved by the party responsible for compliance could
void the user’s authority to operate the equipment.
NOTE: The FIRMAN WT03571 inverter generator has been tested and found to comply with the
limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed
to provide reasonable protection against harmful interference in a residential installation. This
equipment generates, uses and can radiate radio frequency energy and, if not installed and used in
accordance with the instructions, may cause harmful interference to radio communications. However,
there is no guarantee that interference will not occur in a particular installation. If this equipment does
cause harmful interference to radio or television reception, which can be determined by turning the
equipment o and on, the user is encouraged to try to correct the interference by one or more of the
following measures:
FCC/IC Compliance Statement
Changes or modications to equipment not expressly approved by FIRMAN could void the user’s
authority to operate the equipment.
● Reorient or relocate the receiving antenna.
● Increase the separation between the equipment and receiver.
● Connect the equipment into an outlet on a circuit dierent from that to which the receiver is
connected.
● Consult the dealer or an experienced radio/TV technician for help.
3
This manual contains safety information to make you aware of the hazards and risks associated with
generator products and how to avoid them. This generator is designed and intended only for supplying
electrical power for operating compatible electrical lighting, appliances, tools and motor loads, and
is not intended for any other purpose. It is important that you read and understand these instructions
thoroughly before attempting to start or operate this portable generator. Save these original
instructions for future reference.
All information in this publication is based on the latest production information available at the time
of approval for printing. The manufacturer reserves the right to change, alter or otherwise improve the
generator and this documentation at anytime without prior notice.
INTRODUCTION
REGISTER YOUR PRODUCT
Register your product using the QR code provided or at www.rmanpowerequipment.com .
Thank you for purchasing a FIRMAN generator. You have selected a high-quality, precision engine
generator set designed and tested to give you years of satisfactory service. This generator is Tri-Fuel
and capable of running on gasoline, liquid petroleum gas (LPG), and natural gas (NG). This generator is
not intended to be run unattended or to supply power to life safety support.
4
INTRODUCTION
SIGNAL WORDS
WARNING
Indicates a hazard
which, if not avoided,
could result in death
or serious injury.
DANGER
Indicates a hazard
which, if not avoided,
will result in death or
serious injury.
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 will kill
you in minutes. You cannot
smell it or see it.
Generator could cause
electrical shock resulting in
death or serious injury.
Fire- Fuel and its vapors are
extremely ammable which
could cause burns or re
resulting in death or serious
injury. Engine exhaust could
cause re resulting in death
or serious injury.
Hot Surface- Muffler could
cause burns resulting in
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.
5
INTRODUCTION
WARNING! This product can expose you to chemicals including gasoline engine
exhaust, which is known to the State of California to cause cancer, and carbon
monoxide, which is known to the State of California to cause birth defects or other
reproductive harm. For more information go to www.P65Warnings.ca.gov.
This outdoor generator can be used to power outdoor items using extension cords.
NOTICE
If you have questions about intended use, contact FIRMAN customer service. This generator
is designed to be used only with FIRMAN authorized parts.
System Ground
The generator neutral is oating, which means that the AC stator winding is isolated from the
grounding fastener and the AC receptacle ground pins. On a oating neutral generator the AC
receptacle ground pins are not functional. Electrical devices, such as a ground fault circuit interrupter
(GFCI), requiring a functioning AC receptacle ground pin will not operate.
Compliance Requirements
There may be Federal or State regulations, local codes, or ordinances that apply to the intended
use of the generator. Consult a qualied electrician, electrical inspector, or the local agency having
jurisdiction. This generator is not intended to be used at a construction site or similar activity as
dened by NFPA 70-2023 (NEC) section 590.6.
To Restore Power Using Extension Cords
6
INTRODUCTION
1. Only use grounded cords marked for outdoor use rated for your loads.
2. Follow cord safety instructions.
3. Install carbon monoxide alarm(s).
4. When operating portable generator with extension cords, make sure portable generator is located
in an open, outdoor area, at least 20 ft downwind from occupied spaces with exhaust pointed away.
5. Extension cords running directly into your home, powering indoor items IS NOT RECOMMENDED.
Total
Amperage
Up to 13A
Up to 15A
Up to 20A
Up to 30A
Minimum Gauge, Outdoor Rated
Up to 50 ft
（15.24m）
To provide power using
extension cords
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DANGER! Engine exhaust contains carbon monoxide, a poisonous gas that will 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 any openings.
● If an extension cord running directly into your 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.
7
FEATURES, CONTROLS AND ON-PRODUCT HAZARD LABELS
1- Fixed Carrying Handle
2- Fuel Cap
3- Recoil Starter
4- Fuel Select Switch
5- Control Panel
6- Spark Plug Maintenance Cover
7- Muer/Spark Arrester
8- Maintenance Cover
9- Data Decal / Serial Number
*We are always working to improve our products. Therefore, the enclosed product may dier slightly
from the image on this page.
②
③
④
⑤
⑥
①
⑨
⑦
⑧
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FEATURES, CONTROLS AND ON-PRODUCT HAZARD LABELS
Location and content of on-product hazard labels
FREE WARNING LABEL REPLACEMENT. If hazard labels become illegible or are missing, contact
FIRMAN customer service for a free replacement.
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2
3
4
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FEATURES, CONTROLS AND ON-PRODUCT HAZARD LABELS
1
2
10
FEATURES, CONTROLS AND ON-PRODUCT HAZARD LABELS
3
4
11
NOTICE
Total power drawn from all receptacles must not exceed the data decal rating.
1.
120V, 30A – NEMA L5-30R
(not GFCI protected)
A maximum of 27.5 Amps can be drawn from this receptacle.
2.
AC Circuit Breaker
– The receptacles are protected by AC circuit protectors. If the generator is
overloaded or an external short circuit occurs, a circuit protector may trip. If tripping occurs,disconnect
all electrical loads and determine the cause before attempting to continue using the generator. Reset
any tripped circuit protectors.
If multiple receptacles are used at the same time, the total current must be kept with-in the portable
generator data decal rating.
3.
120V, 20A Receptacle
- NEMA 5-20R (Not GFCI protected)
A maximum of 20 Amps current may be drawn from this receptacle.
4.
Choke Button –
Used to start a cold engine.
5.
LPG/NG Hose Connect Inlet
– Used to connect LPG/NG hose to generator.
6.
LPG/NG Regulator Solenoid Port
7.
Output Ready Indicator Light
– Remains “ON” during normal operating conditions. Shuts
“OFF”when generator is overloaded. The green AC Power Indicator Light comes on when the engine
starts and generates power.
FEATURES, CONTROLS AND ON-PRODUCT HAZARD LABELS
Control Panel
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3
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5
6
7
8
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12
13
15
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17
19
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8.
Overload Indicator Light –
This light turns “ON” when the generator is overloaded and will cut
power to the receptacles. If the engine overload indicator light comes on, the generator’s wattage /
amperage capacity has been exceeded by connected electrical devices . When this occurs, the
green AC Power Indicator Light will go o. The engine will continue to run, but the red Engine
Overload Indicator Light will stay on and power will no longer be supplied to connected electrical
devices.
9.
Oil Warning Indicator Light –
Check oil level when this light turns “ON”. Engine will not run when
indicator is lit. When the oil falls below the minimum level, the oil warning indicator light comes on and
the engine stops automatically. The engine will not start until the proper amount of oil is in the crank
case.
10.
Start Button
11.
CO Alert™ Carbon Monoxide (CO) Shutdown Indicator Light
— Indicates the engine shutdown
due to carbon monoxide accumulation around the generator or a CO Alert system fault occurred.
12.
Engine Start/Stop Switch –
Before starting the engine, turn the switch to the "ON(I)" position.
When you turn the switch to the "OFF(O)" position, the engine will stop.
13.
Economy Control Switch -
The Economy Control switch can be activated in order to minimize fuel
consumption and noise while operating the unit during times of reduced electrical output,allowing the
engine speed to idle during periods of non-use. The engine speed returns to normal when an electrical
load is connected. When the economy switch is o, the engine runs at normal speed continuously.
14.
AC Reset Button
- When the inverter is protected, the output can be restored using this button.
15.
USB-A Output Port and USB-C Output Port
16.
DC 12V Output -
8.3 Amps of DC current may be drawn from this receptacle. Use this outlet to
charge 12V automotive type batteries ONLY. See 12V DC outlet (Battery Charger) section.
17.
DC Circuit Breaker –
The DC receptacles are protected by an DC circuit protector. If the DC
output is overloaded or an external short circuit occurs the circuit protector will trip.
18.
Ground Terminal
– Consult an electrician or authority having jurisdiction for local grounding
requirements.
19.
Parallel Operation Outlets –
These outlets are used for connecting inverter generators for parallel
operation. For more information see PARALLEL OPERATION section.
FEATURES, CONTROLS AND ON-PRODUCT HAZARD LABELS
13
OPERATING INSTRUCTIONS
LOCATION
DANGER! 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 20 ft downwind 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 this 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 o.
● If you start to feel sick, dizzy, weak or your home’s carbon monoxide alarm sounds, get to fresh air
right away. Call emergency services. You may have carbon monoxide poisoning.
A. Carbon Monoxide Alarm(s)
Install carbon monoxide alarms inside your home.
Without working carbon monoxide alarms, you
will not realize you are getting sick and dying from
carbon monoxide poisoning.
Prevent Carbon Monoxide (CO) Poisoning
Use outdoors at least 20 ft downwind from any home.
Point exhaust away from all homes and occupied spaces.
Install CO alarms inside your home.
20 ft min.
To better educate yourself about all carbon monoxide risks, go to
www.takeyourgeneratoroutside.com.
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14
OPERATING INSTRUCTIONS
B
.
Reduce Risk of Fire
WARNING! Exhaust heat/gases could ignite combustibles, structures or damage
fuel tank causing a re, resulting in death or serious injury.
● Keep portable generator at least 5 ft from any structure, trees or vegetation over 12 in in height.
● Select an outdoor site that is dry and protected from the weather. Do not move portable generator
indoors to protect it from the weather.
● Do not locate the portable generator under a deck or other similar structure that may conne heat
and airow.
5 ft min.
5 ft min.
20 ft min.
Connect the Battery
NOTICE
Be sure to connect the battery
before attempting to start the generator.
15
OIL AND GASOLINE
2A. Add Engine Oil
Low Oil Shutdown
OPERATING INSTRUCTIONS
We recommend using SAE 10W-30 API SL or
higher oil for best performance. Do not use special
additives. Ambient temperature determines the
proper oil viscosity for the engine. Use the chart to
select the proper oil for the outdoor temperature
range expected.
NOTICE
Do not attempt to crank or start the
engine before it has been properly lled with the
recommended type and amount of oil. Damage
due to operation with no oil will void your warranty.
1. Place generator on a at, level surface.
2. Open the maintenance cover latches and
remove the maintenance cover.
3. Clean area around oil ll and remove yellow oil
ll cap/dipstick.
4. Wipe dipstick clean.
5. Using oil funnel, slowly pour contents of
provided oil bottle into oil ll opening until oil
reaches upper limit "H" mark on the dipstick.
Be careful not to overll. Overlling could cause
engine starting problems or engine damage.
6. Replace oil ll cap/dipstick and fully tighten.
7. Reinstall maintenance cover and tighten
latches.
8. Oil level should be checked prior to each use or
at least every 8 hours of operation.
Keep oil level maintained.
The portable generator is equipped with a low oil shutdown. If the oil level drops below the minimum
required level, a sensor will activate an internal switch stopping the engine. If the engine shuts o
and the oil level is within specications, check to see if generator is sitting at an angle. Place portable
generator on an even surface to correct this. If engine fails to start, the oil level may not be high
enough to deactivate the internal low oil level switch. Make sure the sump is completely full of oil to
the upper limit (H). Do not operate engine until oil level issue is corrected. Contact FIRMAN customer
service.
2
Degrees Celsiusº(Outside)
Full Synthetic 5W-30
5W-30
10W-30
10W-40
Degrees Fahrenheitº(Outside)
NOTICE
Do not screw in cap/dipstick when
checking oil level.
(H)
DRAIN PLUG
(L)
H
L
(H)
DRAIN PLUG
(L)
H
L
16
2B. Add Gasoline
OPERATING INSTRUCTIONS
WARNING! Fuel and its vapors are extremely ammable which could cause
burns or re resulting in death or serious injury.
● Turn generator engine OFF and let it cool at least 2 minutes before removing fuel cap.
● Do Not refuel or move generator when engine is running.
● Move generator outdoors prior to adding or draining fuel
● Keep fuel away from any ignition sources.
● Do not overll tank, allow space for fuel expansion.
● If any fuel spills, wait until it evaporates before starting engine
● Check and replace fuel lines, tank, cap, and ttings prior to each use if any damage or leaks are
found.
Fuel must meet these requirements:
● Clean, fresh, unleaded gasoline with a minimum
of 87 octane.
● Gasoline with no more than 10% ethanol is
acceptable.
E10 E15
NOTICE
Do not mix oil in gasoline or modify
engine to run on alternate fuels not described
in this manual. Use of unapproved fuels could
damage engine and will not be covered under
warranty.
1. Clean area around fuel ll cap, remove cap.
2. Slowly add unleaded fuel to fuel tank. Be careful
not to ll above the RED fuel level indicator.
This allows adequate space for fuel expansion.
3. Install fuel cap and let any spilled fuel evaporate
before starting engine.
Red Line
Indicator
Operation at High Altitude
At altitudes over 5,000 ft, a minimum 85 octane gasoline is acceptable.
Engine power and generator output will be reduced approximately 3.5% for every 1000 ft of elevation
above sea level. High altitude may cause hard starting, increased fuel consumption and sparkplug
fouling. To operate at high altitudes FIRMAN can provide a high altitude carburetor main jet. The
alternative main jet and installation instructions can be obtained by contacting Customer Support.
Altitude main jet 1
Altitude main jet 2
Altitude
3000-6000 ft
6000-8000 ft
NOTICE
Operation using an alternative main jet
at elevations lower than the recommended
minimum altitude can damage the engine. For
operation at lower elevations, the standard main
jet supplied must be used. Operating the engine
with the wrong main jet may increase exhaust
emissions, fuel consumption and reduce perfor-
mance.
145 cc
333713044
333713045
17
Operation at High Ambient conditions
Your FIRMAN Power Equipment product is designed and rated for continuous operation at ambient
temperatures up to 104°F. The generator may be operated at temperatures ranging from 5°F to 122°F
for short periods. If the generator is exposed to temperatures outside this range during storage, the
generator should be brought back within this range before operation. When operated above 77°F there
may be a decrease in power. Maximum wattage and current are subject to and limited by such factors
as ambient temperature, altitude, engine conditions etc.
OPERATING INSTRUCTIONS
Connecting LPG/NG Fuel
WARNING! Liquid Petroleum gas (LPG) and Natural Gas (NG) are extremely
ammable which could cause burns or re resulting in death or serious injury.
● The fuel supply line must always be shut o when the engine is not running. Failure to shut
o fuel may allow fuel to leak at the generator.
● Do not place the LPG/NG sources in the path of muer outlet or near any ignition source.
● Keep a re extinguisher near the generator all the time.
● Do not use or store LPG/NG portable sources not in use near generator or in a building, garage
or enclosed area.
● All LPG/NG supply/ piping lines must be installed by a qualied plumber.
● If you smell gas, close o all gas sources and contact a qualied plumber to inspect and
repair the LPG or NG system.
● Prior to each days rst use spray a soapy water solution on LPG/NG fuel connections to check
for leaks.
● Never use a gas container, LPG/ NG connector hose, LPG cylinder or NG source that appears
to be damaged.
● Do not connect or disconnect the LPG/ NG source in an enclosed area.
● LPG is heavier than air and can accumulate in conned / low spaces if there is a leak.
NOTICE
If a fuel supply connection is necessary it must be installed in accordance with all local
codes or regulations, or in the absence of local codes or regulations, in accordance with the
National Fuel Gas Code (NFPA 54/ANSI Z223.1) and CSA B149.1 (Natural Gas and Propane
Installation Code), as applicable. If possible the fuel supply connection should be close to the
outdoor operating location. This will reduce the cost of the exible fuel run. An approved exible
fuel line must be installed between the generator LPG/NG Hose Connector (Inlet) and the fuel
supply connection. In no case should this information be interpreted to conict with any local,
state, or national code. If in doubt, always follow local codes.
● Always keep the LPG cylinder in an upright position.
● Use only DOT, or equivalent, LPG cylinders in vapor service with type 1, right hand ACME threads.
Verify the re-qualication date on the cylinder has not expired.
● All new cylinders must be purged of air and moisture prior to lling. The purging process should be
done by your propane gas supplier.
1. Connect the primary LPG Regulator A and the LPG/NG Regulator/Hose Assembly B. Ensure reliable
connection and no leakage.
2.
Remove the cap/plug and attach the LPG connect tting E to the connect inlet located on the control panel.
3. Connect the regulator solenoid plug D to the regulator solenoid port located on the control panel.
4. Remove the safety cap/plug from the cylinder valve and attach the LPG regulator assembly to the
LPG cylinder.
Connecting LPG Fuel
18
OPERATING INSTRUCTIONS
NG
1. Loosen and remove the primary LPG Regulator A and LPG connect tting E.
2. Secure the LPG/NG pressure regulator to the handle using the built-in strap H on the regulator.
3. Attach the connect tting C to the connect inlet located on the control panel.
4. Connect the LPG/NG regulator solenoid plug D to the LPG/NG regulator solenoid port located on
the control panel.
5. Connect the locally approved exible fuel supply line F (not included) to the LPG/NG regulator/hose
assembly B and the fuel source. We recommend using the FIRMAN 25 ft Quick Connect Hose Kit
(Model 1815) for natural gas (NG) connection (this accessory is not included).
Hose requirements may vary by local codes. Consult your local licensed plumber to ensure full
compliance with all relevant codes. Ensure the NG source location (G) and the hose (F) used allow the
portable generator to be positioned at least 20 ft away from any occupied spaces.
F (Line)
B(LPG/NG
Regulator/
Hose Assembly)
D(LPG/NG
Regulator
solenoid plug)
C(NG
Connect
Fitting)
G
(NG Valve)
B(LPG/NG Regulator/Hose Assembly)
D(Regulator solenoid plug)
C(NG Connect
Fitting)
A(LPG Regulator Assembly)
E(LPG Connect
Fitting)
Connecting NG Fuel
A( LPG Regulator Assembly)
E(LPG
Connect
Fitting)
D(Regulator
solenoid plug)
C(NG Connect Fitting )
B(LPG/NG Regulator/Hose
Assembly)
H(Strap)
SAE 3/8”
Flare Male
19
1. Before starting the generator, check for loose or
missing parts and for any damage which may
have occurred during shipment.
Ensure spark plug, muer, fuel cap, and air
cleaner are all in place.
2. Operate portable generator only outdoors and
downwind at least 20 ft from occupied
spaces with exhaust pointed away to reduce the
risk of carbon monoxide accumulating.
3. If connected make sure the LPG cylinder knob
or the NG source valve are fully closed or
disconnected.
4. Turn the main fuel selector switch to “GAS”
position.
6. Pull the choke button to the “START” position.
You do not need to choke a warm engine.
3
4
6
WARNING! Failure to read and follow all warnings and instructions in this
manual and on-product labels before attempting to start or operate this
portable generator could result in death or serious injury.
Starting the Generator on Gasoline
3
5
5. Disconnect all electrical loads from the generator.
Never start or stop the generator with electrical
devices plugged in.
OPERATING INSTRUCTIONS
OFF
20
OPERATING INSTRUCTIONS
8
9
11. Allow portable generator to run at no load for
a few minutes to stabilize before plugging in any
electrical devices.
NOTICE
If engine starts but fails to run, or if
portable generator shuts down during operation,
check oil level. See Low Oil Shutdown section for
more information.
7. Flip the engine switch to the “ON”(I) position.
7
9. For electric start only - Press the engine start
button two times or press and hold for 3-5s and
then release.
10. Do not over-choke. As soon as engine starts
and warms up, press the choke button to return to
the run position.
OFF
LPG
10
RUN
8. For recoil start only - Pull the starter cord slowly
until resistance is felt and then pull rapidly to
start engine.
LPG
21
OPERATING INSTRUCTIONS
1. Before starting the generator, check for loose or
missing parts and for any damage which may
have occurred during shipment.
Ensure spark plug, muer, fuel cap, and air
cleaner are all in place.
2. Operate portable generator only outdoors and
downwind at least 20 ft from occupied
spaces with exhaust pointed away to reduce the
risk of carbon monoxide accumulating.
3. Connect the LPG hose with regulator to both
LPG cylinder and portable generator LPG Hose
Connector (inlet). Also connect the LPG/NG
regulator solenoid plug to the LPG/NG regulator
solenoid port located on the control panel .
4. Fully open the LPG cylinder knob.
3
4
Starting the Generator on LPG
4
5
5. Turn the main fuel selector switch to LPG/NG
position.
6
6. Disconnect all electrical loads from the generator.
Never start or stop the generator with electrical
devices plugged in.
22
8
9
11
8. Flip the engine switch to the “ON”(I) position.
9. For recoil start only - PULL-TO-PRIME Pull the
starter cord 1-2 times. Pull slowly until resistance
if felt and then pull rapidly.
11. For recoil start only - PULL-TO-RUN Pull the
starter cord slowly until resistance if felt and pull
rapidly to run the portable generator.
If the engine fails to start in 1-2 pulls with choke in
the RUN position, move choke button to CHOKE
position and repeat the PULL-TO-PRIME step (9).
10.For recoil start only - Press the choke button to
the run position.
10
OPERATING INSTRUCTIONS
OFF
7. Pull the choke button to the “CHOKE” position.
You do not need to choke a warm engine.
7
OFF
LPG
23
Muffler
12
13
14
RUN
14. Allow portable inverter generator to run at no
load for a few minutes to stabilize before plugging
in any electrical devices.
NOTICE
If engine starts but fails to run, or if
portable generator shuts down during operation,
check oil level. See Low Oil Shutdown section for
more information.
NOTICE
Observing frost on LPG cylinder and
regulator is common during operation and normally
is not an indication of a problem. In unusual
situations this frost may eventually restrict the
ow of LPG gas to the generator resulting in
deteriorating performance. In these rare situations
it can be helpful to:
● Exchanging fuel cylinders to allow the rst
cylinder to warm up, repeating as necessary.
● Do not place the LPG cylinder in the path of the
muer exhaust outlet.
● The LPG cylinder and components can be
temporarily warmed by pouring warm water over
them.
12. For electric start only - Press the engine start
button two times or press and hold for 3-5s and
then release.
13. For electric start only - Press the choke button
to the run position.
OPERATING INSTRUCTIONS
LPG
24
OPERATING INSTRUCTIONS
1. Before starting the generator, check for loose or
missing parts and for any damage which may
have occurred during shipment.
Ensure spark plug, muer, fuel cap, and air
cleaner are all in place.
2. Operate portable generator only outdoors and
downwind at least 20 ft from occupied
spaces with exhaust pointed away to reduce the
risk of carbon monoxide accumulating.
3. Connect the FIRMAN secondary NG pressure
regulator to the portable generator NG Hose
Connector (inlet) and then connect the NG
hose to both the NG source and secondary
NG pressure regulator. Also connect the NG
regulator solenoid plug to the LPG/NG regulator
solenoid port located on the control panel .
4. Fully open the NG source valve.
3
4
Starting the Generator on NG
5
5
5. Turn the main fuel selector switch to LPG/NG
position.
6
6. Disconnect all electrical loads from the generator.
Never start or stop the generator with electrical
devices plugged in.
25
OPERATING INSTRUCTIONS
8
9
11
8. Flip the engine switch to the “ON”(I) position.
9. For recoil start only - PULL-TO-PRIME Pull the
starter cord 1-2 times. Pull slowly until resistance
if felt and then pull rapidly.
11. For recoil start only - PULL-TO-RUN Pull the
starter cord slowly until resistance if felt and pull
rapidly to run the portable generator.
If the engine fails to start in 1-2 pulls with choke in
the RUN position, move choke button to CHOKE
position and repeat the PULL-TO-PRIME step (9).
10.For recoil start only - Press the choke button to
the run position.
10
OFF
7. Pull the choke button to the “CHOKE” position.
You do not need to choke a warm engine.
7
OFF
LPG
26
OPERATING INSTRUCTIONS
12
13
RUN
14. Allow portable inverter generator to run at no
load for a few minutes to stabilize before plugging
in any electrical devices.
12. For electric start only - Press the engine start
button two times or press and hold for 3-5s and
then release.
13. For electric start only - Press the choke button
to the run position.
LPG
NOTICE
If engine starts but fails to run, or if
portable generator shuts down during operation,
check oil level. See Low Oil Shutdown section for
more information.
27
OPERATING INSTRUCTIONS
This inverter generator has been pretested and adjusted to handle its full capacity.
CONNECTING ELECTRICAL LOADS
6
WARNING! Generator voltage could cause electrical shock or burn
resulting in death or serious injury.
● Damaged or overloaded extension cords could overheat, arc, and burn resulting death or serious
injury.
● Use a ground fault circuit interrupter (GFCI) in any damp or highly conductive area, such as metal
decking.
● Do not touch bare wires or receptacles.
Surge Protection
There is a remote chance that voltage uctuations may impair the proper functioning of some sensitive
electronic equipment. Electronic devices, including computers and many programmable appliances
may use components that are designed to operate within a narrow voltage range and may be aected
by the portable generator’s momentary voltage uctuations. While there is no way to prevent all voltage
uctuations, you can take steps to protect your sensitive electronic equipment. Install a plug-in surge
suppressor on the receptacles feeding your sensitive equipment. Surge suppressors come in single or
multi-outlet styles. They are designed to protect against short duration voltage uctuations.
1.Ensure circuit breaker on control panel is in the closed (on) position.
2. Start the generator with no electrical load attached.
3. Allow the engine to run for several minutes to stabilize.
4. Plug in and turn on the rst item. It is best to attach the item with the largest load rst.
5. Allow the engine to stabilize.
6. Plug in and turn on the next item.
7. Allow the engine to stabilize.
8. Repeat steps 6-7 for each additional item.
● Do not use generator with electrical cords which are worn, frayed, bare or otherwise damaged.
● Do not operate generator in the rain or wet weather.
● Do not run indoors to avoid wet conditions.
● Do not handle generator or electrical cords while standing in water, while barefoot, or while
hands or feet are wet.
28
OPERATING INSTRUCTIONS
CO Alert
Carbon Monoxide (CO) Shutdown System
CO Alert automatically shuts down the engine when harmful levels of carbon monoxide accumulate
around the generator or a CO Alert fault occurs. After shutdown, the CO Alert indicator light will blink
for at least ve minutes per the chart below. CO Alert DOES NOT replace carbon monoxide alarms.
Install battery-powered carbon monoxide alarm(s) in your home. Don’t run generator in enclosed
areas.
*Yellow light will blink for ve seconds at the startup of generator to show CO ALERT is functioning
properly.
Color
RED
Yellow
Carbon monoxide accumulated around generator. Prior to restart move
generator to an open, outdoor area 20 ft downwind from occupied
spaces with exhaust pointed away. Air out premises (open windows
and doors) before reoccupying property. Automatic shuto is an
indication generator was improperly located.
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.
CO Alert fault occured*.
See FIRMAN authorized service dealer.
Description
29
OPERATING INSTRUCTIONS
Economy Control Switch
12V DC Outlet (Battery Charger)
This unit is equipped with a two-gear economy mode control switch, which automatically adjusts the
engine speed based on the electrical load to achieve an optimal balance among fuel consumption,
noise level and output performance.
Super ECO Mode: The engine operates at a low speed, suitable for low-power electrical devices
such as mobile phones, laptops and LED lamps, and eectively reduces the overall noise and fuel
consumption of the unit.
ECO Mode: The engine speed is higher than that in Super ECO Mode. It delivers more stable power
output while maintaining excellent fuel economy, and is applicable to medium and low-load electrical
scenarios.
Turbo Mode: The engine runs at a constant high speed, capable of providing maximum and stable
power output to meet the power requirements of electrical equipment with high load or high starting
power inductive load.
NOTICE
For periods of high electrical load or momentary uctuations, the Economy Control Switch
should be turned OFF.
The amount of current owing will depend on the charging voltage and battery’s state of charge.
As the battery becomes more fully charged, the output current to the battery decreases and nearly
becomes constant. Taper chargers are intended to be used with the provision that they will be discon-
nected from the battery after a maximum time on charge. Normally a period of 30 to 120 minutes is
sucient to recharge a weak battery. The charge level of the battery should be checked periodically.
NOTICE
● For use with 12V direct current outlet, always keep the ECO mode deactivated (OFF Position).
● You can use the 12V direct current outlet and the 120V current at the same time, but keep the ECO
mode deactivated (OFF Position) at all times.
Do not start the vehicle while the battery charging Cable is connected and the generator is running.
It will not give the battery a boost of power. The Vehicle or the generator may be damaged. Charge
only vented wet lead acid batteries. Other types of batteries may burst, causing personal injury
or damage.
WARNING!
● Storage batteries give o EXPLOSIVE hydrogen gas while charging. Do not allow smoking, open
ames, sparks, or spark producing equipment in the area while charging.
● Battery electrolyte uid is comprised of sulfuric acid that can be very dangerous and cause severe
burns. Do not allow this uid to contact eyes, skin, clothing, etc. If contact or spillage does occur, ush
the area with water immediately.
● Do not continue to charge a battery that becomes hot or is fully charged.
1. Before connecting the battery charging cable to a battery that is installed in a vehicle, disconnect
the vehicle battery ground cable from the negative (–) battery terminal.
2. Plug the battery charging cable into the DC receptacle of the generator.
3. Connect the red (+) battery charger lead to the red (+) battery terminal.
4. Connect the black (–) battery charger lead to the black (–) battery terminal.
5. Start the generator.
30
OPERATING INSTRUCTIONS
STOPPING THE GENERATOR
7
1. Turn o and remove all electrical loads.
Never stop the generator with electrical devices
plugged in and turned on.
Never stop the engine by moving the choke to the
start position.
If the engine oil drops below a preset level, an oil switch will stop the engine. Check oil level with
dipstick.
If oil level is between the LOW and HIGH mark on dipstick:
1.DO NOT try to restart the engine.
2.Contact an Authorized FIRMAN Service Dealer.
3. Turn the main fuel selector switch to OFF (O)
position.
4. Fully close the LPG cylinder knob and NG
source valve.
If a cover is used, do not install until unit has
cooled.
Let the generator run at no-load for one minute to
stabilize internal temperatures of the engine and
generator.
1
3
4
Low Oil Shutdown
LPG
2
2. Turn the engine switch to OFF (O) position.
31
OPERATING INSTRUCTIONS
Overloading a generator in excess of its rated wattage capacity can result in damage to the
generator and to connected electrical devices. To prolong the life of your generator and attached
devices, follow these steps to add electrical load:
1. Start the generator with no electrical load attached.
2. Allow the engine to run for several minutes to stabilize.
3. Plug in and turn on the rst item. It is best to attach the item with the largest load rst.
4. Allow the engine to stabilize.
5. Plug in and turn on the next item.
6. Allow the engine to stabilize.
7. Repeat steps 5-6 for each additional item.
If the generator is overloaded or there is a short circuit in the load, the overload protection red light
will light up. The green light for AC output will turn o, and the output of the receptacle will be cut o.
How to Correct
1. Disconnect any electrical devices, and then stop the engine.
2. Reduce the total wattage of connected electrical devices until it is within the generator’s rated
output
.
3. Inspect the Air Inlet and Control Panel for any blockage. Remove blockage if found.
4. Restart Engine.
Any two FIRMAN 120V inverter generators with parallel ports, including two FIRMAN inverters model
WT03571 can be paralleled to increase the total available electrical power to 6000 Watts.
NOTICE
● Only two compatible FIRMAN 120V inverters can be operated in parallel.
● DO NOT attempt to parallel other models or brands.
● DO NOT connect parallel cables while generators are running.
● DO NOT disconnect the parallel connection cables during the parallel operation of generator sets.
1. Ensure both inverters are on level ground, disconnected from all loads, and turned OFF.
2. Firmly connect the FIRMAN parallel kit (not included) to the parallel operation ports on both inverters.
3. Start the rst inverter, then start the second inverter.
4. Wait a few seconds for both units to synchronize.
5. Once synchronized, use the parallel kit to output the power.
Do Not Overload Generator
Overload Operation
Parallel Operation
3.DO NOT operate engine until oil level is corrected.
If oil level is below the LOW mark on dipstick:
1.Add oil to bring level to HIGH mark.
2.Restart engine and if the engine stops again a low oil condition may still exist. DO NOT try to restart
the engine.
3.Contact an Authorized FIRMAN Service Dealer.
4.DO NOT operate engine until oil level is corrected.
32
To be performed by knowledgable/experienced owner or by authorized service center.
General Recommendations
Regular maintenance will improve the performance and extend the life of the generator. See any
authorized dealer for service.
The generator's warranty does not cover items that have been subjected to operator abuse or
negligence. To receive full value from the warranty, the operator must maintain the generator as
instructed in this manual.
Some adjustments will need to be made periodically to properly maintain your generator.
All service and adjustments should be made at least once each season. Follow the requirements in the
maintenance shedule chart above.
MAINTENANCE SCHEDULE
Check condition. Adjust gap
and clean. Replace if necessary.
Clean fuel tank strainer.
Replace if necessary.
Check fuel hose for cracks or other
damage. Replace if necessary.
Check for leakage. Retighten or
replace gasket if necessary.
Check spark arrester screen.
Clean/Replace if necessary.
Clean, replace if necessary.
Check adjust valve clearance.
Clean combustion chamber.
Check. Replace if necessary.
Check oil level.
Replace.
√
√
Daily
(Before
operation)
Initial
25
hours
Every
50
hours
Every
250
hours
Every
100 hours
(or annual)
√
√
√
√
√
√
√
√
√
MAINTENANCE - STORAGE
NOTES
ITEM
Fittings/
Fasteners
Exhaust
System
Fuel Line
Air Filter
Engine Oil
Spark Plug
Fuel
Engine
√
LPG Regulator
/Hose Assy.
Check for damage and leaks.
Replace if necessary.
√
33
When Transporting Generator
Transport with fuel tank EMPTY or with fuel valve in OFF position.
Do not tip generator at an angle which causes fuel to spill.
Disconnect LPG/NG regulator/ hose assembly and securely stow away.
Engine Maintenance
To prevent accidental starting, remove and ground spark plug wire before performing any service.
Change Engine Oil
Change engine oil every 100 hours (for a new engine, change oil after 25 hours). If you are using your
generator under extremely dirty or dusty conditions, or in extremely hot weather change the oil more
often.
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.
MAINTENANCE - STORAGE
(a) Open the latches on the maintenance cover
and remove the maintenance cover.
(b) Remove the oil ller cap/dipstick.
(c) Tilt the generator on its side and allow the oil to
drain completely.
(d) Fill the engine with oil until it reaches the HIGH(H)
level on the oil ller cap. DO NOT OVERFILL.
NOTICE
Do not screw in cap/dipstick when checking
oil level.
(e) Reinstall the maintenance cover
.
(f) Dispose of used oil at an approved used oil
collection centers.
NOTICE
We recommend using SAE 10W-30 API SL
or higher oil for best performance. Do not use
special additives. See Oil and Gasoline section (page
15).
Keep Out Of Reach Of Children. Don’t
Pollute. Conserve Resources. Return
Used Oil To Collection Centers.
(H)
(L)
34
MAINTENANCE - STORAGE
Air Cleaner Maintenance
(a) Remove the air cleaner cover.
(b) Carefully remove foam air lter element and
wash it with liquid detergent and water only.
Squeeze dry in a clean cloth.
Air Filter Element
(d) Reinstall clean or new air lter element.
(e) Reinstall the air cleaner cover.
(c) Saturate foam air lter element with clean
engine oil and squeeze in a clean cloth to remove
excess oil.
Air Cleaner Cover
Foam Air Filter
Element
35
MAINTENANCE - STORAGE
Spark Plug Maintenance
Muer and Spark Arrester Maintenance
Changing the spark plug will help your engine start
easier and run at peak performance.
(a) Remove the Spark Plug Maintenance Cover.
(b) Remove the spark plug boot.
(c) Remove spark plug using provided wrench.
(d) Inspect spark plug for damage and clean with a
wire brush before reinstalling. Replace if damaged.
(e) Adjust the electrode gap to 0.028 - 0.031 in.
( ) Seat spark plug in position and thread by hand to
prevent cross threading.
(g) Tighten plug with provided wrench and put
the spark plug boot back on spark plug. Do not
overtighten.
Maintenance Valve Clearance
Intake: 0.004 – 0.006 in
Exhaust: 0.004 – 0.006 in
Spark Plug: A5RTC
● Do not touch hot parts.
● It is a violation of California Public Resource Code, Section 4442, to use or operate the engine on
any forest covered, brush-covered, or grass-covered land unless the exhaust system is equipped
with a spark arrester, as dened in Section 4442, maintained in eective working order. Other states
or federal jurisdictions may have similar laws, reference Federal Regulation 36 CFR Part 261.52.
WARNING!
Contact with muer area could cause burns resulting in serious injury.
f
0.028-0.031in
(0.7-0.8mm)
0.028-0.031in
(0.7-0.8mm)
0.028-0.031in
(0.7-0.8mm)
36
MAINTENANCE - STORAGE
Inspect Muer and Spark Arrester
1.Inspect the muer for cracks, corrosion, or other
damage.
2. Loosen the spark arrester fasten screw, remove
the spark arrester with a thin blade screwdriver .
3. Carefully remove the carbon deposits from the
spark arrester screen with a wire brush.
4. Replace the spark arrester if it is damaged. If
replacement parts are required, make sure to use
only FIRMAN original equipment replacement
parts.
5. Position the spark arrester in the muer and
fasten with the screw.
NOTICE
Failure to clean or replace spark arrester
may result in decreased engine performance.
37
Battery Replacement
Battery Charging
MAINTENANCE - STORAGE
GENERATOR MAINTENANCE
● Run the generator at least 30 minutes every month.
● Make certain that the portable generator is kept clean and dry.
● Do not expose the unit to excessive dust, dirt, moisture or corrosive vapors.
● Do not insert any objects through cooling slots.
● Before each use inspect underneath the generator for signs of oil or fuel. Clean any accumulated
debris. Keep area around muer free from any debris. Use a soft bristle brush to remove dirt or caked
on oil. Use a damp cloth to clean all exterior surfaces.
The battery powers the starter motor and control module. This portable generator is equipped with an
automatic battery charging circuit. The battery will receive charging voltage only when the engine is
running. The battery will maintain a proper charge if the portable generator is used on a regular basis
(about once every two weeks). If it is used less frequently, the battery should be connected to a trickle
charger (not included) or battery maintainer (not included) to keep the battery properly charged.
1. Remove the maintenance cover.
2. Release the battery using the screwdriver.
3. Disconnect the quick connector.
4. Remove the battery and recycle.
5. Install the new battery with following specication:
12V lithium battery 1.2AH
LXWXH:5.04X3.15X1.02 in.(128X80X26mm)
6. Connect the battery quick connector.
7. Tighten the battery with the M6×12 bolt.
8. Reattach the maintenance cover.
Battery
38
Long Term Storage
WARNING!
Fuel and its vapors are extremely ammable which could cause burns or re resulting in
death or serious injury.
Do not store fuel near any ignition sources.
When draining fuel move generator outdoors and use a commercially available non-conductive vacuum
siphon. Fuel must be drained into an approved container.
It is important to prevent gum deposits from forming in essential fuel system components such as
the carburetor, fuel hoses or tank during storage. Ethanol-blended fuels (called gasohol, ethanol or
methanol) attract moisture, which leads to separation and formation of acids during storage. Acidic gas
can damage the fuel system of an engine while in storage.
When the generator set is being stored for more than one month, follow these instructions to avoid
engine problems:
1.Add a properly formulated fuel stabilizer to the gasoline
tank.
2.Start the generator as instructed in Starting the
Generator section.
3.Run the generator for 5-10 minutes so the treated
gasoline cycles through the fuel system.
4.Turn the main fuel selector switch to the “OFF” position
until the engine stops. This may take 3-5 minutes.
5.Change oil after the engine cools down entirely.
6.Remove spark plug and pour about one teaspoon of
engine oil into the cylinder.
7.Pull the starter cord a few times to lubricate the cylinder
and then reinstall the spark plug.
8.Cover and store the unit in a clean, dry place out of
direct sunlight.
NOTICE
Any damage or hazards caused by using
improper fuel, improperly stored fuel, and/or improperly
formulated stabilizers, are not covered by manufacturer's
warranty.
Do not store gasoline from one season to another
season.
39
TROUBLESHOOTING – SPECIFICATIONS
For all other issues, contact authorized dealer or FIRMAN customer service.
Problem Cause Correction
Engine is running,
but no AC output is
available.
1. Circuit breaker is open.
2. Fault in generator.
3. Poor connection or defective cord
set.
4. Connected device is bad.
1. Reset circuit breaker.
2. Contact authorized service facility.
3. Check and repair.
4. Connect another device that is in
good condition.
Engine runs
good at no-load
but “bogs down”
when loads are
connected.
1. Short circuit in a connected load.
2. Engine speed is too slow.
3. Generator is overloaded.
4. Shorted generator circuit.
5. Clogged or dirty fuel lter.
1. Disconnect shorted electrical load.
2. Contact authorized service facility.
3. See Don’t Overload Generator.
4. Contact authorized service facility.
5. Clean or replace fuel lter.
Engine will not
start; starts and
runs rough or
shuts down when
running.
1. Fuel selector switch set to OFF
(O)position.
2. The indicator light is OFF or
ashing red.
3. Low oil level.
4. Dirty air cleaner.
5. Out of fuel.
6. Stale fuel.
7. Spark plug wire not connected to
spark plug.
8. Bad spark plug.
9. Water in fuel.
10. Flooded.
11. Excessively rich fuel mixture.
12. Clogged or dirty fuel lter.
13. Starting battery may have
insucient charge.
14. Out of LPG/NG.
15. LPG cylinder knob / NG supply
valve is not open.
16. Out of battery power.
1. Set fuel selector switch to “GAS”
or “LPG/NG” position.
2. Must have solid red indicator light
to be able to start the engine.
3. Fill crankcase to proper level or
place generator on level surface.
4. Clean or replace air cleaner.
5. Fill fuel tank.
6.
Drain fuel tank and carburetor; ll with fresh fuel.
7. Connect wire to spark plug.
8. Replace spark plug.
9.
Drain fuel tank and carburetor; ll with fresh fuel.
10.
Wait 5 minutes and re-crank engine.
11. Contact authorized service facility.
12. Clean or replace fuel lter.
13. Check battery output and charge
battery as necessary.
14.
Replace LPG cylinder/ check NG supply.
15. Fully open LPG cylinder knob / NG
supply valve.
16. Start Engine in “GAS” position.
Charge or replace battery.
Engine lacks
power.
1. Load is too high.
2. Dirty air lter.
3. Clogged or dirty fuel lter.
4. Clogged spark arrester.
1. Don’t Overload Generator
2. Replace air lter.
3. Clean or replace fuel lter.
4. Clean or replace spark arrester.
Engine “hunts”
or falters.
1.
Carburetor is running too rich or too lean.
2. Clogged or dirty fuel lter.
1. Contact authorized service facility.
2. Clean or replace fuel lter.
Engine shuts down
when running.
1. Out of gasoline or LPG/NG
2. Dirty air cleaner.
3. Low oil level.
1. Fill fuel tank with gasoline or replace
LPG cylinder / check NG supply.
2. Clean or replace air cleaner.
3. Fill crankcase to proper level or
place generator on level surface.
Engine shuts down
and yellow CO
fault light blinking.
1. CO system fault 1. Contact authorized FIRMAN
service facility.
40
TROUBLESHOOTING – SPECIFICATIONS
Specications
*Generator certied in accordance with CSA (Canadian Standards Association) standard C22.2No.
100-14,Motors and Generators and complies with PGMA (Portable Generator Manufacturers’
Association) standard ANSI/PGMA G300-2023, Safety and Performance of Portable Generators.
Model
Starting Watts
Running Watts*
Rated AC Voltage
Rated Fequency
Phase
Voltage Regulator
Power Factor
Alternator Type
Engine
Engine Type
Displacement
Low Oil Shutdown
Ignition System
Starting System
Fuel
Capacity Fuel Tank
Lubricating Oil Capacity
Carburetor Type
Air Cleaner
P.T.O. Shaft Rotation
Oil Type
AC Grounding System
Natural Gas Fuel Pressure Range
Natural Gas Fuel Consumption
LPG fuel consumption
Quarter load (25%)
Half Load Full Load
0.4 m
3
/h
14.1 ft
3
/h
14,407 BTU/h
4,222 W
0.65 m
3
/h
23 ft
3
/h
23,910 BTU/h
6,924 W
1.2 m
3
/hr
42.4 ft
3
/hr
42,201 BTU/h
12,368 W
WT03571
4125(GASOLINE)/3750(LPG)/3300(NG)
3300(GASOLINE)/3000(LPG)/2650(NG)
120V
60Hz
Single
Digital
1
Magneto Inductor
FIRMAN
Single Cylinder, 4-Stroke OHV Air Cooled
145cc
Yes
Breakless Ignition Type, Flywheel Magneto
Recoil/Electric
Unleaded Automotive Gasoline
5.7 L / 1.51 gallons
450 ml / 15.2 oz
Float
Polyurethane Type
Counter Clockwise (Facing P.T.O.)
See “Add Engine Oil” Section
Neutral Floating
1.7-2.7 kpa / 13- 20mm mercury
7-11 inches water column / 0.25-0.40 psi
6.03 ft
3
/hr(0.65L/hr)
15,200 BTU/h
12.8 ft
3
/hr(1.38L/hr)
32,400 BTU/h
22.6 ft
3
/hr(2.44L/hr)
57,100 BTU/h
REPLACEMENT PARTS LIST
WT03571 Parts Diagram
For replacement parts, call our customer service department at 844-347-6261, 8 a.m. - 8 p.m., EST, Monday - Sunday.
43
REPLACEMENT PARTS LIST
145cc Engine Parts Diagram
44
43
REPLACEMENT PARTS LIST
WT03571 Portable Generator
All replacement parts are covered under warranty.
NO.
Part
Number
Description Qty.
49 333723040 Plug 1
50 330713605 Screw & Washer Assy. M3 x 10 1
51 333723016 Outlet Cover 12V DC 1
52 333753007 Receptacle, USB 1
53 333727006
Cover 1
54 316735503
Cover, Engine Switch
2
55 333753008 Engine Switch 1
56 336755002 CO Indicator Light 1
57 330713630
Breaker, AC Reset
1
58 375457019
Switch
1
59 333713009
Control Panel Assy.
1
60 336718322 Nut M3 1
61 320755501 LED Assy. 1
62 330713660 Receptacle, Battery Charger 1
63 333723017 Pull Choke Assy. 1
64 336718324 Nut M4 8
65 320755500 Receptacle, 5-20R 1
66 317713580
Receptacle, L5-30R
1
67 330723588
Screw & Washer Assy. M4 x 8
5
68 336713585
Circuit Breaker, Push Button, 20A
1
69 329713610
Breaker, 10A Push Button
1
70 320723006
5-20R Receptacle Cover
1
71 336725506 Receptacle Cover, L5-30R 1
72 336457020 Nut M11 x 1 2
73 336718345 Flange Bolt M5 x 16 (Ground) 1
74 336713580 External Tooth Lock Washer 1
75 336718307 Flat Washer Ø5 2
76 336713577
Nut M5
2
77 336755005
Cover, 20A Push Button, Circuit Breaker
2
78 333753009 ECO Switch 1
79 330713608 Receptacle, DC 12V 1
80 330713603 Parallel Port 2
81 320753006 Parallel Port Cover 2
82
333427010 Control Panel Assy. 1
83 333423001 Fuel Tank Assy. 1
84 333413011 LPG Regulator Hose Assy. 1
84.1 333413012 LPG Regulator 1
84.2 333713046
Inlet Adaptor
1
84.3 333413013
Hose With Regulator
1
84.4 333723041
Protect Cover
1
85 317713584
L5-30P to TT-30R Adaptor
1
86 330713633
Battery Charging Cable
1
NO.
Part
Number
Description Qty.
1
333467028
Engine 1
2 336715522 Flange Bolt M6 x 16 4
3 317713512 Isolator 4
4 333717014 Nut M6 6
5 333723001
Base Assy.
1
6 375715016 Nut M6 4
7 320725501 Isolator I 2
8 336718302 Flange Bolt M6 x 12 4
9 320725502 Isolator II 4
10 317713524 Nut M5 12
11 333723002 Right Cover Assy. 1
12 333723003 Front Cover Assy. 1
13 355428303 CO Module 1
14 333753003 Battery, 1.2Ah 1
15 317713001 Bolt M6 × 16 6
16 336718361 Screw M6 x 12 1
17 333723004 Maintenance Cover 1
18 333723005 Fuel Cap 1
19 333723006 Fuel Filter 1
20 317713526 Mounting, Fuel Tank 4
21 333723007 Rollover Valve Board 1
22 333723008 Rollover Valve Assy. 1
23 317713553 Clamp Ø8 x 6 1
24 333723009 Hose 1
25 333723010 Fuel Tank 1
26 333717008 Filter, Inline 1
27 316715503 Clamp Ø13.5 x 10 1
28 333723011 Hose 1
29 330713508 Clip Ø10.5 x 8 2
30 336718383
Screw & Washer Assy. M4 x 14
11
31 333723012
Fuel Valve Knob
1
32 333427009 Rear Cover 1
33 355418316 Fuel Valve 1
34 336713822 Micro Switch 2 1
35 330713574 Rectier 1
36 399715591 Tapping Screw ST2.9 x 16 2
37 375718320
Screw & Washer Assy. M4 x 20
2
38 333753004 Control Module 1
39 336723624 Flange Bolt M6 x 10 2
40 333753005 Control Module 1
41 330723528 Wire Clip 1
42 333753006 Inverter 1
43 333723014 Left Side Cover Assy. 1
44 336713538
Screw & Washer Assy. M5 x 14
4
45 336718397 Screw M5 x 14 18
46 333713045 Inlet Fitting 1
47
336713835 Clamp Ø8-Ø14 2
48
375715034 LPG Hose 1
44
145cc Engine
REPLACEMENT PARTS LIST
NO.
Part
Number
Description Qty.
1
336718361
Screw M6 x 12 3
2 333427011 Recoil Assy. 1
3 333713014 Bolt M6 x 50 2
4 336718361 Screw M6 x 12 2
5 330723528
Wire Clip
3
6 330713523 Screw ST4.2 x 16 7
7 333723022 Engine Cover Assy. 1
8 333723023 Wind Guide, Lower 1
9 333723024 Wind Guide, Higher 1
10 333753010 Ground Wire 1
11 333753011
Ignition Coil
1
12 333713015
Screw ST6.3 × 22
2
13 336718338 Flange Bolt M6 x 12 4
14 333713016 Pulley, Starter 1
15 333723025 Cooling Fan 1
16 330713555 Nut M14 1
17 333753012 Rotor 1
18 317723524 Bolt M6 x 35 3
19 333753013 Stator 1
20 336718338 Flange Bolt M6 x 12 1
21 333723026 Plate 1
22 312715059
Screw M6 x 20
7
23 333713017 Crankcase Cover 1
24 333753014 Low Oil Sensor 1
25 336718301 Flange Bolt M6 x 12 3
26 336723513 Seal, Oil 1
27 333717030 Bearing 6205TM 1
28 333713018 Crankshaft 1
29 333717030 Bearing 6205TM 1
30 317723516 Dowel Pin 8 x 14 2
31 333713019
Crankcase Gasket
1
32 336718338 Flange Bolt M6 x 12 1
33 333753015 Trigger Assy. 1
34 333713020 Crankcase 1
35 333713021 Cylinder Head Gasket 1
36 330723548 Locating Pins 2
37 320715524 Oil Dipstick Assy. 1
38 333723027 Oil Nozzle 1
39 333713022 Connecting Rod Assy. 1
40 333713023 Piston Pin 1
41 333713024 Piston Pin Circlip 2
42 333713025 Piston 1
43 333413005 Piston Rings Set 1
44 333723028 Camshaft Gasket 1
45 333713026 Camshaft Assy. 1
46 333713027 Valve Lifter 2
47
333713028 Push Rod 2
48
333713029 Cylinder Head 1
NO.
Part
Number
Description Qty.
49
333713030
Rocker Arm Shaft 2
50 333713031 Rocker Arm Assy. 2
51 333713032 Exhaust Valve 1
52 333713033 Valve Spring 2
53 333713034
Clip
2
54 333713035 Intake Valve 1
55 333713036 Valve Seal 1
56 333713037 Valve Lock Clip 4
57 333713038 Retainer, Valve Spring 2
58 320715548 Spark Plug (A5RTC) 1
59 333713039 Flange Bolt M8 × 60 4
60 333713040 Gasket, OHV Cover 1
61 333713041 Cylinder Head Cover Assy. 1
62 312715059 Screw M6 x 20 4
63 330723556 Stud Bolt M6 x 97 2
64 333723029 Gasket, Insulator 1
65 333723030 Plate, Carburetor Insulator 1
66 333723031 Gasket, Carburetor 1
67 333723032 Fuel Hose 1
68 330713508 Clip Ø10.5 x 8 1
69 333713044 Carburetor 1
70 320715535 Stepper Motor 1
71 380713542 Screw & Washer Assy. M3 2
72 333723033 Gasket, Air Cleaner 1
73 336723555 Nut M6 4
74 333723034 Breather Hose 1
75 333723035 Air Cleaner Base 1
76 333723036
Clapboard
1
77 333723037 1
78 333723038 Air Cleaner Cover 1
79 333713042
Stud Bolt, Intake
2
80 333723039 Gasket, Mufer 1
81 333413007 Mufer 1
82 336718301 Flange Bolt M6 x 12 1
83 330713548 Screw ST3.5 x 9.5 1
84 333713043 Spark Arrestor 1
85 333413008 Crankcase Cover Assy. 1
86 333423002 Air Cleaner Assy. 1
87 333413009 Cylinder Head Assy. 1
88 333413010 Mufer Assy. 1
89 333423013 Gasket Set 1
Air Element
45
WIRING DIAGRAM
Wiring Diagram
LPG/NG
46
SERVICE – WARRANTY
For service information contact FRIMAN customer service at 1-844-347-6261 or at www.
rmanpowerequipment.com to obtain warranty service information or to order replacement
parts or accessories.
HOW TO ORDER REPLACEMENT PARTS
Even quality-built equipment such as this electric generator may need occasional
replacement parts to maintain it in good condition over the years. To order replacement parts,
please give the following information:
● Model No. Rev. Level and Serial No. found on the Data Decal.
● Parts number or numbers as shown in the Parts List section.
● A brief description of the trouble with the generator.
FIRMAN 3 YEARS LIMITED WARRANTY
Repair/Replacement Warranty
FIRMAN warrants to the original purchaser that the mechanical and electrical components will be
free of defects in material and workmanship for a period of one (1) year (parts and labor) and 3 years
(parts and technical support) from the original date of purchase 90 days [parts and labor] and 180
days [parts] for commercial & industrial use. Transportation charges on product submitted for
repair or replacement under this warranty are the sole responsibility of the purchaser . This warranty
only applies to the original purchaser and is not transferable.
Do Not Return the Unit to the Place of Purchase
Contact the FIRMAN customer service and FIRMAN will troubleshoot any issue via phone or e-mail.
If the problem is not corrected by this method, FIRMAN will, at its option, authorize evaluation,
repair or replacement of the defective part or component at a FIRMAN Service Center. FIRMAN
will provide you with a case number for warranty service. Please keep it for future reference.
Repairs or replacements without prior authorization, or at an unauthorized repair facility, will not be
covered by this warranty.
Warranty Exclusions
This warranty does not cover the following repairs and equipment.
Normal Wear
Your product needs periodic parts and service to perform well. This warranty does not cover repair
when normal use has exhausted the life of a part or the equipment as a whole.
Warranty Qualications
Register your product using the QR code provided or at www.
rmanpowerequipment.com. FIRMAN will also register the warranty upon
receipt of your Warranty Registration Card and a copy of your sales receipt
from one of FIRMAN’s retail locations as proof of purchase. Please submit
your warranty registration and your proof of purchase within ten(10) days of
the date of purchase.
47
SERVICE – WARRANTY
INSTALLATION, USE AND MAINTENANCE
This warranty will not apply to parts and/or labor if your product is deemed to have been misused,
neglected, involved in an accident, abused, loaded beyond the generator’s limits, modied,
installed improperly or connected incorrectly to any electrical component. Normal maintenance is
not covered by this warranty.
Other Exclusions
This warranty excludes:
– cosmetic defects such as paint, decals, etc.
– wear items
– accessory parts
– failures due to acts of God and other force majeure events beyond the manufacturer’s control
– problems caused by parts that are not original FIRMAN parts
– units used for prime power in place of existing utility power where utility is present or in place
of utility power where utility power service does not normally exist.
LIMITS OF IMPLIED WARRANTY AND CONSEQUENTIAL DAMAGE
FIRMAN disclaims any obligation to cover any loss of time, use of this product, freight, or any
incidental or consequential claim by anyone from using this product. THIS WARRANTY IS IN LIEU OF
ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WARRANTIES OF MERCHANT
ABLILITY OR FITNESS FOR A PARTICULAR PURPOSE.
A unit provided as an exchange will be subject to the warranty of the original unit. The length of the
warranty governing the exchanged unit will remain calculated by reference to the purchase date of the
original unit.
This warranty gives you certain legal rights which may change from state to state. Your state may
also have other rights you may be entitled to that are not listed within this warranty.
Contact Information
You may contact FIRMAN at:
Firman Power Equipment Inc.
Attn: Customer Service
8644 W. Ludlow Dr.
Peoria, AZ 85381
www.rmanpowerequipment.com
We are FIRMAN POWER - And we are here for you.
48
SERVICE – WARRANTY
FIRMAN POWER EQUIPMENT INC.
EMISSION CONTROL WARRANTY STATEMENT
The warranty period begins on the date the engine/equipment is delivered to an ultimate purchaser. FIRMAN warrants to the ultimate
purchaser and each subsequent purchaser that the engine is:
Designed, built, and equipped so as to conform with all applicable regulations adopted by the Air Resources Board and US EPA;
and Free from defects in materials and workmanship that cause the failure of a warranted part to be identical in all material
respects to the part as described in the engine manufacturers application for certification.
Th
e warranty on emissions-related parts is as follows:
(1) Any warranted part that is not scheduled for replacement as required maintenance in the owner's manual supplied, is
warranted for the warranty period stated above. If any such part fails during the period of warranty coverage, the part will be
repaired or replaced by FIRMAN at no charge to the owner. Any such part repaired or replaced under the warranty will be
warranted for the remaining warranty period.
(2) Any warranted part that is scheduled only for regular inspection in the owner's manual supplied, is warranted for the w
arranty
period stated above. Any such part repaired or replaced under warranty will be warranted for the remaining warranty period.
(3) Any warranted part that is scheduled for replacement as required maintenance in the owner's manual supplied, is warranted
for the period of time prior to the first scheduled replacement point for that part. If the part fails prior to the first scheduled
replacement, the part will be repaired or replaced by FIRMAN at no charge to the owner. Any such part repaired or replaced
under warranty will be warranted for the remainder of the period prior to the fi
rst scheduled replacement point for the part.
(4) Repair or replacement of any warranted part under the warranty must be performed at no charge to the owner at a warranty
station.
(5) Notwithstanding the provisions of Subsection (4) above, warranty services or repairs must be provided by FIRMAN that
are franchised to service the subject engines.
(6) The owner must not be charged for diagnostic labor that leads to the determination that a warranted part is in fact defective,
provided that such diagnostic work is performed at a warranty station.
(7) FIRMAN is liable for damages to o
ther engine components proximately caused by a failure under warranty of any
warranted part.
MANUFACTURER'S WARRANTY COVERAGE:
The exhaust and evaporative emissions control system on your small off-road engine and engine powered equipment is warranted
for two years. If any emissions-related part on your small off-road engine and engine powered equipment is defective, the part will
be repaired or replaced by FIRMAN.
OWNER'S WARRANTY RESPONSIBILITIES:
As the SORE and engine powered equipment owner, you are responsible for the performance of the required maintenance
listed in your operator's manual. FIRMAN recommends that you retain all receipts covering maintenance on your SORE and
engine powered equipment, but FIRMAN cannot deny warranty coverage solely for the lack of receipts or for your failure to
ensure the performance of all scheduled maintenance.
As the SORE and engine powered equipment owner, you should however be aware that FIRMAN may deny you warranty
coverage if your small off-road engine
or engine powered equipment or a part has failed due to abuse, neglect, or improper
maintenance or unapproved modifications.
You are responsible for presenting your small off-road engine and engine powered equipment to a FIRMAN distribution center
or service center as soon as the problem exists. The warranty repairs shall be completed in a reasonable amount of time,
not to exceed 30 days.
If you have any questions regarding your warranty rights and responsibilities, you should contact FIRMAN at 1-844-347-6261.
FIRMAN Emission Control Defects Warranty Provisions
This emission Control System is warranted for two years. If any emission-related part on your
engine/equipment is defective, the part will be repaired or replaced by FIRMAN.
As the small off-road engine/equipment owner, you are responsible for the performance of the
required maintenance listed in your owner's manual. FIRMAN recommends that you retain all
receipts covering maintenance on your small off-road engine/equipment, but FIRMAN cannot
deny warranty coverage solely for the lack of receip
ts or for your failure to ensure the performance
of all scheduled maintenance. As the small off-road engine/equipment owner, you should
however be aware that FIRMAN may deny you warranty coverage if your small off-road
engine/equipment or a part has failed due to abuse, neglect, improper maintenance or
unapproved modifications. You are responsible for presenting your small off-road
engine/equipment to FIRMAN distribution center as soon as a problem exists. The warranty
repairs shall be completed in a reasonable amount of time, not to exceed 30 days. If you have any
questions regarding your warranty rights and responsibilities, you should contact FIRMAN at
1-844-347-6261 or www.firmanpowerequipment.com .
DEFECTS WARRANTY REQUIREMENTS:
(a) The warranty period begins on the date the engine/equipment is delivered to an ultimate
purchaser.
(b) General Emissions Warranty Coverage. FIRMAN warrants to the ultimate purchas
er and each
subsequent owner that the engine/equipment is:
(1) Designed, built, and equipped so as to conform with all applicable regulations adopted by the
Environmental Protection Agency; and
(2) Free from defects in materials and workmanship that causes the failure of a warranted part for
a period of two years.
(c) The warranty on emissions-related parts will be interpreted as follows:
(1) Any warranted part that is not scheduled for replacement as required maint
enance in the
written instructions required by subsection (d) must be warranted for the warranty period
defined in Subsection (b)(2). If any such part fails during the period of warranty coverage, it
must be repaired or replaced by FIRMAN according to Subsection (4) below. Any such part
repaired or replaced under the warranty must be warranted for the remaining warranty period.
(2) Any warranted part that is scheduled only for regular inspection in the written instructions
required by subsection (d) must be warranted for the warranty period defined in Subsection (b)(2).
A statement in such written instructions to the effect of “repair or replace as necessary” will
not reduce the period of warranty coverage. Any such part repaired or replaced under warranty
must be warranted for the remaining warranty period.
YOUR WARRANTY RIGHTS AND OBLIGATIONS
The United States Environmental Protection Agency (EPA) and FIRMAN POWER EQUIPMENT INC.
(FIRMAN) are pleased to explain the emission control system warranty on your [2026-2027] model
year small off-road engine/equipment. In the United States, new small off-road engine/equipment
must be designed, built and equipped to meet the State's stringent anti smog standards. FIRMAN
must warrant the emission control system on your small off-road engine/equipment for the period
listed below provided there has been no abuse, neglect or improper maintenance of your small
of
f-road engine/equipment leading to the failure of the emission control system. Your emissions
control system may include parts such as the carburetor or fuel-injection system, the ignition
system, catalytic converter, fuel tanks, fuel lines (for liquid fuel and fuel vapors), fuel caps, valves,
canisters, filters, clamps and other associated components. Also included may be hoses, belts,
connectors, and other emission-related assemblies. Where a warrantable con
dition exists, FIRMAN
will repair your small off-road engine/equipment at no cost to you including diagnosis, parts and labor.
49
SERVICE – WARRANTY
This Emission Control System Warranty shall not cover any of the following:
(a) Consequential damages such as loss of time, inconvenience, loss of use of the engine or
equipment, etc.
(b) Diagnosis and inspection fees that do not result in eligible warranty service being performed.
1. Ignition system including:
- Spark plug
- Ignition coil
2. Fuel metering system:
- Fuel tank
- Fuel cap
- Fuel lines(for liquid fuel and fuel vapors) and
related fittings/clamps
- Fuel regulator, carburetor and internal parts.
3. Catalytic muffler assembly including:
- Exhaust ma
nifold
- Catalytic converter
- Muffler gasket
-pulse valve
4. Air induction system including:
- Intake pipe/manifold
- Air cleaner
5. Crankcase breather assembly including:
- Breather connection tube
6. Fuel tank evaporative emission control system
including:
- Purge valves
- Carbon canister
- Vapor hoses and fitting/clamps
(3) Any warranted part that is scheduled for replacement as required maintenance in the
written instructions required by subsection (d) must be warranted for the period of time prior
to the first scheduled replacement point for that part. If the part fails prior to the first scheduled
replacement, the part must be repaired or replaced by FIRMAN according to Subsection (4)
below. Any such part repaired or replaced under warranty must be warranted for the remainder
of the period prior to the first scheduled replacement point for the part.
(4) Repair or replacement of any warranted part under the warranty must be performed at no
charge to the owner at a warranty station.
(5) Notwithstanding the provisions of Subsection (4) above, warranty services or repairs must be
provided at all FIRMAN distribution c
enters that are franchised to service the subject engine/
equipment.
(d) Emission Warranty Parts List for exhaust (for all displacements).
FIRMAN will furnish with each new engine/equipment written instructions for the maintenance
and use of the engine/equipment by the owner.
Limitations
(6) The owner must not be charged for diagnostic labor that leads to the determination that a
warranted part is in fact defective, provided that such diagnostic work is performed at a
warranty station.
(7) FIRMAN is liable for damages to other engine/equipment component
s proximately
caused by a failure under warranty of any warranted part.
(8) Throughout the emissions warranty period defined in Subsection (b)(2), FIRMAN must
maintain a supply of warranted parts sufficient to meet the expected demand for such parts.
(9) Any replacement part may be used in the performance of any warranty maintenance or
repairs and must be provided without charge to the owner. Such use will not reduce the
warranty obligations of FIRMAN.
(10) Add-on or modified parts that are not exempted by the Environmental Protection Agency
may not be used. The use of any non-
exempted add-on or modified parts will be grounds for
disallowing a warranty claim. FIRMAN will not be liable to warrant failures of warranted parts
caused by the use of a non-exempted add-on or modified part.
(11) FIRMAN issuing the warranty shall provide any documents that describe that manufacturer's
warranty procedures or policies within five working days of request by the Environmental
Protection Agency.
All rights reserved. Any reprinting or unauthorized use with-
out the written permission is expressly prohibited.
P/N:333733003 Rev:00 0126
