Firman WT12579 Tri Fuel Inverter Portable Generator User Manual

FIRMAN and logo design are trademarks or

registered trademarks of FIRMAN. All rights

reserved.

Serial Number

399748302-00

Purchase Date

MODEL #WT12579

TRI-FUEL

INVERTER GENERATOR

ATTACH YOUR RECEIPT

567

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.

TABLE OF CONTENTS

Introduction.......................................................................................................................................................

Features, Controls and On -Product Hazard Labels...................................................................................

Operating Instructions.....................................................................................................................................

Maintenance - Storage....................................................................................................................................

Troubleshooting- Specications....................................................................................................................

Replacement Parts Lists .................................................................................................................................

Wiring Diagram ................................................................................................................................................

Service - Warranty ...........................................................................................................................................

FCC DECLARATION

Supplier’s Declaration of Conformity

47 CFR § 2.1077 Compliance Information

FIRMAN WT12579 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 modications not expressly approved by the party responsible for compliance could

void the user’s authority to operate the equipment.

NOTE: The FIRMAN WT12579 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 modications 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 di󰀨erent from that to which the receiver is

connected.

● Consult the dealer or an experienced radio/TV technician for help.

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.

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 any time without prior notice.

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.

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 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 a 120/240V receptacle directly into

your home’s electrical system. Install a listed transfer switch as soon as possible if this generator will

be used to restore power to your home.

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 has a system ground that connects the generator frame components to the ground

terminals on the AC output receptacles. The system ground is connected to the AC neutral wire. The

neutral is bonded to the generator frame.

Compliance Requirements

There may be Federal or State regulations, local codes, or ordinances that apply to the intended

use of the generator. Consult a qualied 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

dened by NFPA 70-2026 (NEC) section 590.6.

To Restore Home Power Using a Listed Transfer Switch

Connections to your home’s electrical system must use a listed* transfer switch installed by a

licensed 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

Typical

120/240V

Outlet

Transfer

Switch

Typical Indoor Items

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

To provide power using

extension cords

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.

6. Install a listed *transfer switch as soon as possible if this or any generator will be used to restore

power to your home.

*Certied by a Nationally Recognized Testing Laboratory that the product complies to appropriate

product safety test standards.

Up to 50A

FEATURES, CONTROLS AND ON-PRODUCT HAZARD LABELS

1- Fixed Carrying Handle

2- LPG/NG Select Switch

3- Recoil Starter

4- Never Flat Wheel

5- Control Panel

6- Mu󰀪er/Spark Arrester

7- Folding Handle

8- Data Decal / Serial Number

*We are always working to improve our products. Therefore, the enclosed product may di󰀨er slightly

from the image on this page.

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.

1 2

3 4

FEATURES, CONTROLS AND ON-PRODUCT HAZARD LABELS

NOTICE

Total power drawn from all receptacles must not exceed the data decal rating.

Parallel Operation Outlets –

These outlets are used for connecting inverter generators for parallel

operation. A FIRMAN parallel kit (optional equipment) is required for parallel operation. For more

information see

PARALLEL OPERATION

section.

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 within the portable

generator data decal rating.

30A Circuit Breaker

– The receptacles are protected by AC circuit protectors.

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.

12V DC Battery Charger Port

- Plug the 120 Volt AC charger into this port to charge the generator

battery.

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.

20A Circuit Breaker

– The receptacles are protected by AC circuit protectors.

Intelligauge with LED Screen –

The screen can show the Voltage, Hertz, Power , running hours,

Fault alarm, regular maintenance, low oil alarm and remaining running time .

FEATURES, CONTROLS AND ON-PRODUCT HAZARD LABELS

Control Panel

Engine Switch –

To start engine, press and hold the switch in the START (ll) position, the engine

will crank and attempt to start. When the engine starts, release the switch to the RUN (l) position. To

stop engine, turn the switch to OFF(O) position.

10.

DC Circuit Breaker –

The DC receptacles are protected by a DC circuit protector. If the DC output

is overloaded or an external short circuit occurs, the circuit protector will trip.

11.

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.

12.

USB-A Output Port+USB-C Output Port

Charge a wide array of devices such as your iPhone, tablet, GoPro, speakers, or similar products

that use a USB-A port.

Charge a wide array of devices such as your MacBook Pro, Android phone, or similar products that

use a USB-C port.

13.

Main Fuel Selector Switch –

Use to select and turn on gasoline (GAS) or LPG/NG fuel source.

The GAS valve is closed when the switch is in the OFF or LPG/NG positions.

14.

Choke Button –

Used to start a cold engine.

15.

120V, 30A – NEMA L5-30R (not GFCI protected)

A maximum of 30 Amps current may be drawn from this receptacle.

16.

120V, 20A Duplex GFCI

(Ground Fault Circuit Interrupter)- NEMA 5-20R

A maximum of 20 Amps current may be drawn from this duplex receptacle.

17.

Ground Terminal

– Consult an electrician or authority having jurisdiction for local grounding

requirements.

18.

120/240V, 30A – NEMA L14-30R

(not GFCI protected)

A maximum of 30 Amps current for 240 Volts or two independent 120 Volt loads at 30 Amps

current each can be drawn from this receptacle.

A maximum of 30 Amps current may be drawn from this receptacle (

Parallel Operation

19.

120/240V, 50A – NEMA 14-50R

(not GFCI protected)

A maximum of 41.7 Amps current for 240 Volts or two independent 120 Volt loads at 41.7 Amps

A maximum of 50 Amps current may be drawn from this receptacle (

Parallel Operation

FEATURES, CONTROLS AND ON-PRODUCT HAZARD LABELS

Intelligauge Display Screen

English Customer Service: 1-844-FIRMAN1

Intelligauge Display Screen

Low oil level

Generator maintenance required

ECO mode (no load, low idle speed)

Voltage

Frequency

Power

Total run time

Remaining run time

CO Alert alarm

Display value

Remaining fuel

Restore output after generator overloaded and clear

maintenance icon flashing after the maintenance

Change to show the Voltage, Hertz, Power ,

Running hours and remaining running time.

FEATURES, CONTROLS AND ON -PRODUCT HAZARD LABELS

LPG/NG

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.

OPERATING INSTRUCTIONS

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 conne heat

and airow.

5 ft min.

20 ft min.

Battery Cable Connection

NOTICE

Be sure to connect the battery

before attempting to start the generator.

1. Open the battery maintenance cover.

2. Remove the protective cover of the battery

cable terminal.

3. Connect the battery terminal.

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. Loosen the cover screw 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 overll. Overlling could cause

engine starting problems or engine damage.

6. Replace oil ll cap/dipstick and fully tighten.

7. Reinstall maintenance cover and tighten screws.

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 specications, 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.

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)

DRAIN PLUG

(L)

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 overll 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 spark plug

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.

459 cc

390418301

390418302

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 mu󰀪er 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 qualied plumber.

● If you smell gas, close o󰀨 all gas sources and contact a qualied 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 conned / 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 conict 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 LPG cylinders in vapor service with type 1, right hand ACME threads. Verify the

re-qualication 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.

Attach the LPG regulator hose assembly (included) to the LPG hose connector (inlet) on the control

panel of the generator. Tighten the nut with a 19 mm or adjustable wrench. Remove the safety plug

or cap from the LPG cylinder valve. Attach the LPG regulator to the cylinder valve. Do not use a

wrench to tighten LPG cylinder nut. Tighten the nut by hand clockwise to a positive stop. Using a

wrench may damage LPG cylinder components.

Connect the locally approved exible fuel supply line (not included) to the LPG/NG connector (inlet)

on the control panel and the fuel Source. We recommend you use FIRMAN 25 ft Quick Connect Hose

Kit (Model 1815) or 10 ft Quick Connect Hose Kit (Model 1805) for Natural Gas (NG) connection (This

item is not included). Hose requirements may vary in di󰀨erent regions depending on local codes.

Contact your local licensed plumber to ensure complete compliance with all codes. Make sure the

NG source location and hose used allows the portable generator to be located at least 20 ft from any

occupied spaces.

Intelligauge Display Screen - Battery Power Saving

This generator is equipped with an electronic module which consumes battery power. When the main

fuel selector switch is turned to the GAS or LPG/NG position, the intelligauge display screen will light

for up to 4 minutes (before going o󰀨). Start the engine successfully anytime during the 4 minutes. If

portable generator is not started during this 4-minute period the portable generator will switch to Bat-

tery Power Saving Mode to conserve battery life.

NOTICE

Your portable generator is equipped with an internal battery charger that will properly

charge the battery only when the engine is running.

The generator cannot be started in Battery Power Saving Mode. Turn main fuel selector switch to

the o󰀨 position and back to the GAS or LPG/NG position to reset the RED indicator 4-minute

electronic module.

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, mu󰀪er, 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.

NOTICE

When the main fuel selector switch is

turned to the GAS position, the intelligauge display

screen will light for up to 4 minutes (before going

o󰀨)

6. Flip the engine switch to the RUN (l) position.

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

5. Disconnect all electrical loads from the generator.

Never start or stop the generator with electrical

devices plugged in.

OPERATING INSTRUCTIONS

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.

8. For recoil start only - Pull the starter cord slowly

until resistance is felt and then pull rapidly to

start engine.

9. For electric start only - Flip the engine switch to

the START (ll) position for a few seconds 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

7. Pull the choke button to the “CHOKE” position.

You do not need to choke a warm engine. (For

electric start move to step (9))

RUN

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, mu󰀪er, 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/NG

Hose

4. Fully open the LPG cylinder knob.

6. Turn the LPG/NG selector switch to LPG position.

Starting the Generator on LPG

5. Turn the main fuel selector switch to LPG/NG

position.

7. Disconnect all electrical loads from the generator.

Never start or stop the generator with electrical

devices plugged in.

9. Pull the choke button to the “CHOKE” position.

You do not need to choke a warm engine. (For

electric start move to step (13))

10. For recoil start only - PULL-TO-PRIME Pull the

starter cord 1-2 times. Pull slowly until resistance

is felt and then pull rapidly.

11.For recoil start only - Press the choke button to

the run position.

OPERATING INSTRUCTIONS

OFF

8. Flip the engine switch to the RUN (l) position.

NOTICE

When the engine switch is turned to the

RUN position, the intelligauge display screen will

light for up to 4 minutes (before going o󰀨).

RUN

15. 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:

● Exchange fuel cylinders to allow the rst cylinder to warm up, repeating as necessary. Placing the

LPG cylinder at the end of the generator near the handle, where engine fan air ows out from the

generator. This air is slightly heated by air owing over the engine. Do not place the LPG cylinder in

the path of the mu󰀪er exhaust outlet.

● The LPG cylinder and components can be temporarily warmed by pouring warm water over

them.

13. For electric start only - Flip the engine switch to

the START (ll) position for a few seconds and

then release.

14. For electric start only - Press the choke button

to the run position.

OPERATING INSTRUCTIONS

12. For recoil start only - PULL-TO-RUN Pull the

starter cord slowly until resistance is 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 lever to START

position and repeat the PULL-TO-PRIME step (10).

OFF

1. Before starting the generator, check for loose or

missing parts and for any damage which may

have occurred during shipment.

Ensure spark plug, mu󰀪er, 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/NG

Hose.

4. Fully open the LPG cylinder knob.

6.Turn the LPG/NG selector switch to NG position.

Starting the Generator on NG

5. Turn the main fuel selector switch to LPG/NG

position.

OPEN

OPERATING INSTRUCTIONS

7. Disconnect all electrical loads from the generator.

Never start or stop the generator with electrical

devices plugged in.

8. Pull the choke button to the “CHOKE” position.

You do not need to choke a warm engine. (For

electric start move to step (13))

10. For recoil start only - PULL-TO-PRIME Pull the

starter cord 1-2 times. Pull slowly until resistance

is felt and then pull rapidly

11.For recoil start only - Press the choke button to

the run position.

OPERATING INSTRUCTIONS

OFF

9. Flip the engine switch to the RUN (l) position.

NOTICE

When the engine switch is turned to the

RUN position, the intelligauge display screen will

light for up to 4 minutes (before going o󰀨).

12. For recoil start only - PULL-TO-RUN Pull the

starter cord slowly until resistance is 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 lever to START

position and repeat the PULL-TO-PRIME step (9).

OPERATING INSTRUCTIONS

15. 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.

13. For electric start only - Flip the engine switch to

the START (ll) position for a few seconds and

then release.

14. For electric start only - Press the choke button

to the run position.

OFF

OPERATING INSTRUCTIONS

This portable generator has been pretested and adjusted to handle its full capacity. The voltage is

regulated using an automatic voltage regulator (AVR). Readjusting the AVR will void warranty.

The duplex receptacle is equipped with GFCI protection. The GFCI protects against electric shock

that may be caused if you become a path which electricity travels to reach earth. Even with a GFCI

you may feel a shock, but the GFCI cuts power quickly so an average person should not su󰀨er any

injury. Manual test GFCI while generator is running to verify internal contacts will function.

●

Push the test button. The reset button will pop out, which should cut power to outlet.

●

Press the reset button until it locks in the depressed position. If the GFCI does not reset as

described do not use the receptacles. Call Firman customer service.

●

If GFCI trips while in use, reset and test the outlet. Electric cords lying on the ground with

worn insulation may trip the GFCI, only use cords in good condition.

In addition to the manual test / reset feature the GFCI receptacle tests itself periodically to conrm the

GFCI electronics are functional. The indicator light will be solid green when the GFCI is powered from

the generator and working correctly.

Self-test indications: If the indicator light is solid orange or ashing red a problem may exist.

Press the TEST button to trip the GFCI. If unable to reset, replace the GFCI

CONNECTING ELECTRICAL LOADS

RESET

TEST

TEST MONTHLY

FOLLOW DIRECTIONS

RESET BUTTON

Receptacle

Outlet

LED Indicator Light

TEST BUTTON

Outlet

SELF-TEST OPERATION

CONNECTING ELECTRICAL LOADS

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 a󰀨ected

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.

● Use listed transfer switch to prevent backfeed by isolating generator from electric utility workers.

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

OPERATING INSTRUCTIONS

Economy Control Switch

12V DC Outlet (Battery Charger)

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.

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 the 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

su󰀩cient 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.

OPERATING INSTRUCTIONS

STOPPING THE GENERATOR

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 button

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.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.

2. Turn the engine switch and main fuel selector

switch to OFF (O) position.

3. 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.

Low Oil Shutdown

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.

When an overload or short circuit occurs, the AC output will shut o󰀨, and a red "P" light will appear on

the display. To resume AC output, rst clear the overload or short-circuit fault, then either press and

hold the RESET button on the display or turn o󰀨 the power and restart the device.

NOTICE

When the engine shuts down due to overload and stall or fuel exhaustion, the "P" light will stay on and

glow red.

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 120/240V inverter generators with parallel ports, including two FIRMAN inverters

model WT12579 can be paralleled to increase the total available electrical power to 19000 Watts.

NOTICE

● Only two compatible FIRMAN 240V inverters can be operated in parallel.

● DO NOT attempt to parallel other models or brands.

● DO NOT connect parallel cable while generators are running.

● DO NOT disconnect the parallel connection cable during the parallel operation of generator sets.

1. Ensure both inverters are on level ground, disconnected from all loads, and turned OFF.

2. Set both inverters’ voltage selector switches to the 240V position.

3. Firmly connect the FIRMAN parallel cable to the parallel operation ports on both inverters.

4. Start the rst inverter, then start the second inverter.

5. Wait a few seconds for both units to synchronize.

6. Once synchronized, the 14-50R and L14-30R outlets on both inverters can be used.

Do Not Overload Generator

Overload Operation

Parallel Operation

To be performed by knowledgeable/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 schedule chart above.

NOTICE

Once a year you should clean or replace the spark plug and replace the air lter. A new

spark plug and clean air lter assure proper fuel-air mixture and help your engine run at peak

performance and last longer.

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 and adjust valve clearance.

Clean combustion chamber.

Check. Replace if necessary.

Check oil level.

Replace.

√

Daily

(Before

operation)

Initial

hours

Every

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.

√

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 fuel hose 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) Loosen the cover screws and remove the

maintenance cover.

(b) Pop up the plug from below yellow draining bolt.

(d) Tilt the generator on its side and allow the oil to

drain completely.

(e) Replace yellow drain bolt.

(f) On a level surface ll the engine with oil until it

reaches the HIGH (H) level on the oil ller cap.

DO NOT OVERFILL.

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

16).

Keep Out Of Reach Of Children. Don’t

Pollute. Conserve Resources. Return

Used Oil To Collection Centers.

MAINTENANCE - STORAGE

Air Filter Maintenance

(a) Remove the air cleaner cover and locate the air

lter plastic 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) Reattach the air lter cover.

(f) Reinstall the air cleaner cover and tighten the

cover screw securely.

engine oil and squeeze in a clean cloth to remove

excess oil.

Air Cleaner

Foam

Element

MAINTENANCE - STORAGE

Spark Plug Maintenance

Mu󰀪er and Spark Arrester Maintenance

Changing the spark plug will help your engine start

easier and run at peak performance.

(a) Remove the maintenance cover.

(b) Remove the spark plug boot.

(d) Inspect spark plug for damage and clean with a

wire brush before reinstalling. Replace if damaged.

(e) Adjust the electrode gap to 0.031 - 0.039 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: F7RTJC

● 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 dened in Section 4442, maintained in e󰀨ective working order. Other states

or federal jurisdictions may have similar laws, reference Federal Regulation 36 CFR Part 261.52.

WARNING!

Contact with mu󰀪er area could cause burns resulting in serious injury.

0.031 - 0.039 in

MAINTENANCE - STORAGE

Inspect Mu󰀪er and Spark Arrester

1.Inspect the mu󰀪er for cracks, corrosion, or other

damage.

2. Loosen the spark arrester clamp, remove the

spark arrester cover, and 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 mu󰀪er and

attach spark arrester cover with the screws.

NOTICE

Failure to clean or replace spark arrester

may result in decreased engine performance.

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 mu󰀪er 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, you can use the

supplied charger plugged into the generator 12V DC Battery Charge Port to charge the battery.

1. Plug the cord from the charger into the charging port on the generator control panel.

2. Plug the charger into a 120 volt AC wall outlet.

3. There is a light on the charger that remains red until the battery is fully charged at which point

the light will turn green.

1.Unscrew the air cleaner cover by provided

screwdriver.

2. Release the battery retaining rubber belt.

3. Disconnect the black(-) cable from black(-) terminal

on the battery. Disconnect the red(+) cable from red(+)

terminal on the battery.

4. Remove the battery and recycle and dispose of

properly.

5. Install the new battery with following specication:

12V sealed lead battery 9AH

LXWXH: 150X65X107mm

6.Connect the red(+)batterycable to the positive termi-

nal of battery rst and then connect the black(-)

battery cable to the negative terminal of battery.

7. Reattach the air cleaner cover.

Battery

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 “STORAGE

OFF” position until the engine stops. This may take 3-5

minutes. Then turn the fuel selector switch to “OFF (O)”

position.

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.

TROUBLESHOOTING – SPECIFICATIONS

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

insu󰀩cient 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.

Drain fuel tank and carburetor; ll with fresh fuel.

7. Connect wire to spark plug.

8. Replace spark plug.

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.

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.

For all other issues, contact authorized dealer or FIRMAN customer service.

TROUBLESHOOTING – SPECIFICATIONS

Specications

Model

Starting Watts

Running Watts*

Rated AC Voltage

Rated Frequency

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 Consumption

LPG fuel consumption

WT12579

12500(GASOLINE)/11200(LPG)/9400(NG)

10000(GASOLINE)/9000(LPG)/7500(NG)

120/240V

60Hz

Single

Digital

Magneto Inductor

FIRMAN

Single Cylinder, 4-Stroke OHV Air Cooled

459cc

Yes

Breakerless Ignition Type, Flywheel Magneto

Recoil/Electric

Unleaded Automotive Gasoline

27 L / 7.1 gallons

1200 ml / 40.6  oz

Float

Polyurethane Type

Counter Clockwise (Facing P.T.O.)

See “Add Engine Oil” Section

Neutral Bonded To Frame

1.7-2.7 kpa / 13- 20mm mercury

7-11 inches water column / 0.25-0.40 psi

*Generator certied in accordance with CSA (Canadian Standards Association) standard C22.2

No. 100-14, Motors and Generators and complies with PGMA (Portable Generator Manufacturers’

Association) standard ANSI/PGMA G300-2023, Safety and Performance of Portable Generators.

Quarter load (25%)

Half Load Full Load

1.6 m

56.65 ft

56,710 BTU/h

16,620 W

2.2 m

78.26 ft

78,345 BTU/h

22,960 W

3 m

/hr

105.1 ft

/hr

105,210 BTU/h

30,835 W

78.2 MJ/h

74,130 BTU/h

21,725 W

116.0 MJ/h

109,910 BTU/h

32,210 W

154.3 MJ/h

146,255 BTU/h

42,865 W

Natural Gas Fuel Pressure Range

REPLACEMENT PARTS LIST

WT12579 Parts Diagram

For replacement parts, call our customer service department at 844-347-6261, 8 a.m. - 8 p.m., EST, Monday - Sunday.

REPLACEMENT PARTS LIST

459cc Engine Parts Diagram

REPLACEMENT PARTS LIST

WT12579 Portable Generator

All replacement parts are covered under warranty.

NO.

Part

Number

Description Qty.

43.2 336718359

Screw ST4.2 x 9.5

43.3 399728329

Exhaust Port

43.4 399728330

Rear Cover

44 336713006

Flange Bolt M8 x 20

45 399728331

Left Handle Cover

46 355718311

Handle Bolt

47 399718336

Left Handle

48 399718337

Lower Handle

49 355718318

Screw M5 x 14

50 355728314

Bushing

51 399718338

Right Handle

52 355718312

Washer Ø23.4 x Ø13.1 x 1

53 399728332

Right Handle Cover

54 399428304

Top Cover Assy.

54.1 399728333

Top Cover

54.2 399718339

Ball Stud

54.3 399728334

Fuel Guide Plate

55 399728335

Plug

56 399718340

Rear Handle Support, Left

57 399718341

Rear Handle Support, Right

58 399718342

Rear Handle

59 399718343

Front Handle

60 399718344

Flange Bolt M8 x 35

61 399718345

Front Handle Support, Left

62 399718346

Front Handle Support, Right

63 336713538

Screw & Washer Assy. M5 x 14

64 375718320

Screw & Washer Assy. M4 x 20

65 399718347

Bracket

66 399718348

Nut M4

67 399718349

Bracket, Left

68 399728336

Fuel Tank Cap Trim Panel

69 399428305

Left Cover Assy.

69.1 399728337

Left Decorative Trim

69.2

336718359

Screw ST4.2 x 9.5

69.3 399728338

Left Cover

69.4 399728339

Rubber Damper

70 399728340

Left Access Cover Assy.

70.1 399728341

Rubber Seal

70.2 399728342

Left Access Cover

71 399428306

Front Cover

72 399718350

Left Bracket, ECM

73 399718351

Right Bracket, ECM

74 399458305

ECM

75 399728343

Air Guide Cover, ECM

76 330713523

Screw ST4.2 x 16

77 332753001

CO Module

78 336718383

Screw & Washer Assy. M4 x 14

79 399718352

Bracket, Battery

NO.

Part

Number

Description Qty.

399468300

Engine Assy.

2 336718326

Nut M6

3 336713516

External Teeth Lock Washer Ø6

4 355718300

Ground Wire

5 399728319

Base Assy.

6 399718323

Flange Bolt M6 x 70

7 355718301

Flange Bolt M6 x 55

8 399728320

Isolator

9 317713577

Clip

10 399718324

Screw M5 x 14

11 399728321

Plug, Wheel

12 330713585

Washer Ø12

13 399718325

Axle

14 355718424

Nut M10 x 1.25

15 399728322

Wheel

16 330713584

Retaining Ring Ø12

17 336718301

Flange Bolt M6 x 12

18 317713524

Nut M5

19 336718318

Nut M8

20 399728323

Bearing Plate

21 357713532

Isolator II

22 357713531

Nut M10

23 336713531

Flange Bolt M8 x 20

24 399718326

Right Support Plate

25 375718302

Flange Bolt M8 x 12

26 336713822

Micro Switch 2

27 336718322

Nut M3

28 336713531

Flange Bolt M8 x 20

29 399718327

Left Rear Support Post

30 399718328

Right Rear Support Post

31 399718329

Left Front Support Post

32 399718330

Right Front Support Post

33 336718301

Flange Bolt M6 x 12

34 399718331

Air Cleaner Bracket

35 399718332

Rear Support Plate

36 399718333

Left Support Plate

37 399718334

Front Support Plate

38 355718417

Bolt M6 x 20

39 399428302

Right Cover Assy.

39.1 399728324

Trim, Right Cover

39.2 336718359

Screw ST4.2 x 9.5

39.3 399728325

Right Cover

39.4 399718335

Trim, Recoil Guide

40 399728326

Right Access Cover

41 399728327

Main Regulator Cover

42 333717014

Nut M6

399428303

Rear Cover Assy.

43.1

399728328

Rubber Seal

NO.

Part

Number

Description Qty.

399458306

Battery

81 393728308

Flange Nut M5

82 357713569

Screw & Washer Assy. M5 x 10

83 399728344

Pad, Battery

84 330713623

Pinch, Rubber

85 336713692

Battery Cable, Negative, Male,

86 336713611

Boot, Rubber Battery

87 333755502

Battery Wire

88 336713693

Battery Cable, Negative, Female,

89 357713571

Boot, Black Battery

90 357713570

Boot, Red Battery

91 399718353

Main Regulator

92 380713547

Clamp

93 399728345

Regulator Switch Insert

94 399718355

Fuel Tank

95 310715064

Bolt M6 x 20

96 336417031

Screw M5 x 16

97 399428307

Fuel Gauge

98 330713500

Fuel Tank Cap

99 399428308

Fuel Filter, Wire Mesh

100 336713807

Tank Fitting With Filter

101 399728346

Fuel Hose

102 330713508

Clip Ø10.5 x 8

103 399728347

Hose

104 317713553

Clamp Ø8 x 6

105 355418318

Choke Knob Assy.

106 336718383

Screw & Washer Assy. M4 x 14

107 399728348

Fuel Knob

108 336755005

Cover, Push Button Circuit Breaker

109 340725503

Switch Cover

110 399458307

Engine Switch

111 357713542

Flange Bolt M6 x 22

112 380713515

Nut M6

113 336713512

Lock Washer Ø6

114 336713513

Flat Washer Ø6

115 336713516

External Teeth Lock Washer Ø6

116 399718358

Control Panel

117 399458309

Multimeter

118 317713580

Receptacle, L5-30R

119 329753003

D.C 10A Breaker, Push Button

120 336713601

Receptacle, L14-30R

121 336718324

Nut M4

122 357713588

Receptacle, 5-20R 120V 20A

123

317713565

Receptacle, 12V DC

124

320753005

Receptacle, USB

125

336713538

Screw & Washer Assy. M5 x 14

126 355718401

Screw ST2.9 x 18

127 336713822

Micro Switch 2

NO.

Part

Number

Description Qty.

128

399728349

Control Box

129 355418316

Fuel Valve

130 399728350

Fuel Hose

131 330713508

Clip Ø10.5 x 8

132 399458310

Speed Limiter

133 336713538

Screw & Washer Assy. M5 x 14

134 380713518

Receptacle, 14-50R

135 336713569

Screw & Washer Assy. M4 x 8

136 380713526

Circuit Breaker, 30A, Double-Pole

137 330723586

Screw/Washer Assy. M5 x 8

138 336713585

Circuit Breaker, Push Button, 20A

139 399755668

Circuit Breaker, Double-Pole, 50A

140 317718305

Switch, ECO

141 330713618

Receptacle, Battery Charging

142 336755002

CO Indicator Light

143 336457020

Nut M11 x 1

144 393727003

Receptacle Cover, TT-30R/14-50R

145 316735503

Cover, Engine Switch

146 393725501

Cover, 30A, Circuit Breaker

147 392758302

Cover, Double-Pole Circuit

148 360725502

Receptacle Cover, 5-20R GFCI

149 360725501

Receptacle Cover, L14-30R

150 399427010

Receptacle Cover, 14-50R

151 336718368

Screw & Washer Assy. M3 x 6

152 399458311

Parallel Terminal, Red

153 399458312

Parallel Terminal, White

154 333718301

External Tooth Washer

155 333728300

Circuit Breaker Nut

156 399458313

Parallel Terminal, Black

157 336725506

Receptacle Cover, L5-30R

158 320723011

Cover, 12V DC Receptacle

159 336713538

Screw & Washer Assy. M5 x 14

160 399418318

Fuel Tank Assy.

161 399418319

Control Panel Assy.

162 380713547

Clamp

163 399725527

LPG Hose

164 336713542

Grommet, Fuel Tank

165 357713600

Bushing

166 330713634

12V DC, Battery Float Charger

167 320755504

12V DC Charging Cable

168 336713834

LPG Regulator/Hose Assy.

REPLACEMENT PARTS LIST

459cc Engine

REPLACEMENT PARTS LIST

NO.

Part

Number

Description Qty.

336718308

Flange Bolt M6 x 8 3

2 355428307 Handle, Recoil 1

3 399728300 Guide, Rope 1

4 399418300 Starter Assy. 1

5 357723571

Nut M16

6 357723572 Pulley, Starter 1

7 392715500 Engine Cover 1

8 336718302 Flange Bolt M6 x 12 5

9 399728301 Cooling Fan 1

10 380418300 Flywheel 1

11 399718300

Bolt M5 x 20

12 399728302

Rear Cover, Mufer

13 399458300 Ignition Coil 1

14 336718311 Flange Bolt M6 x 29 2

15 399715636 Flange Bolt M8 x 20 3

16 399418301 Mufer Assy. 1

17 336718318 Nut M8 2

18 375718321 Wire Clip 2

19 399728304 Gasket, Mufer 1

20 336723526 Flange Bolt M6 x 15 13

21 399728305 Alternator Fan 1

22 399718302

Washer

23 399458301 Rotor Assy. 1

24 399718303 Flange Bolt M8 x 70 4

25 399458302 Stator Assy. 1

26 399715765 Position Pin Ø10 x 12 2

27 399718305 Flange Bolt M10 x 20 4

28 399728306 Front Cover, Mufer 1

29 360728307 Nylon Cord 1

30 357723515 Seal, Oil 2

31 317713577

Clip

32 336728303 Sheath, Wire 1

33 355428308 Quick Oil Drain Hose 1

34 330723604 Bolt, Drain 1

35 357723502 Oil Drainbolt Washer 12 x 2

36 399418302 Crankcase 1

37 357723503 Sensor, Engine Oil 1

38 393723008 Gasket, Crankcase 1

39 317723516 Dowel Pin 8 x 14 2

40 399418303 Crankshaft 1

41 357723507 Balance Shaft 1

42 393723009 Dipstick, Oil 1

43 357723505 Radial Ball Bearing 6202/ 2

44 393713011 Crankcase Cover 1

45 357723516 Flange Bolt M8 x 40 10

46 357723517 Rod, Connecting 1

393713039 Piston Pin 1

357723518 Piston Pin Retainer Ring 2

NO.

Part

Number

Description Qty.

392467006

Ring,Oil 1

50 392467007 Ring, Second Piston 1

51 392467008 Ring, First Piston 1

52 392467009 Piston 1

53 399718309

Gasket, Cylinder Head

54 357723544 Dowel Pins Ø12 x 20 2

55 399418304 Cylinder Head 1

56 336723539 Exhaust Valve Stud Bolt 2

57 355718346 Bolt M10 x 1.25 x 80 4

58 399728307 Cylinder Head Shroud 1

59 330713523 Screw ST4.2 x 16 2

60 370728300 Gasket, OHV 1

61 330713548 Screw ST3.5 x 9.5 6

62 399418305 PCV 1

63 368728300 Gasket, PCV 1

64 370728302 OHV Cover 1

65 336723577 Flange Bolt M6 x 20 4

66 357723529 Breather Tube 1

67 393413005 Camshaft 1

68 399718311 Valve Lifter 2

69 399718312 Push Rod 2

70 317723574 Nut, Valve Adjusting 2

71 399718314 Rocker Arm Shaft 2

72 399718315 Bolt M6 x 16 4

73 355718338 Valve, Locking Clip 4

74 399718316 Retainer, Intake Valve 2

75 399718317 Valve Spring 2

76 355728333

Oil Seal, Valve

77 399718318 1

78 399718319 Intake Valve 1

79 380717007

Drain Plug M12 x 1.25 x 15

80 357713584 Flange Bolt M8 x 35 2

81 399418307 Starter Motor Assy. 1

81.1 399718320 Starter Motor 1

81.2 399458303 Relay, Starter 1

81.3 336713519 Flange Bolt M5 x 16 2

82 399718321 Lifting Lugs 1

83 399715634 Flange Bolt M8 x 25 1

84 399728308 Crankcase Air Guide 1

85 399428300 Air Cleaner 1

85.1 336723609 Flange Bolt M6 x 29 1

85.2 399728309 Air Cleaner Cover 1

85.3 399728310 Air Cleaner Element 1

85.4 399728311 Air Cleaner Base 1

355718320 Clamp 33-57 2

399728312 Hose, Air Cleaner 1

Crankcase

REPLACEMENT PARTS LIST

NO.

Part

Number

Description Qty.NO.

Part

Number

Description Qty.

375467022

Spark Plug 1

89 355718345 Stud Bolt M6 x M8 x 110 2

90 399728313 Gasket, Carburetor 1

91 399728314 Carburetor Connector 1

92 357723551

Gasket, Carburetor

93 399418308 Carburetor Assy. 1

93.1 399418309 Carburetor 1

93.2 355728354 Stepper Motor Bracket 1

93.3 355718397 Screw M4 x 10 4

93.4 399418310 Stepper Motor, Throttle 1

93.5 336718351 Bolt M4 x 8 2

94 399728315 Gasket, Air Cleaner 1

95 399428301 Intake Manifold Assy. 1

95.1 399728316 Intake Chamber Base 1

95.2 399718322 Manifold Screw 1

95.3 399728317 Intake Manifold Cover 1

95.4 357713550 Wing Nut M6 1

96 336723555 Nut M6 1

97 399418311

Recoil Assy.

98 399418312 Crankcase Assy. 1

99 399418313 Piston Rings Assy. 1

100 399418314

Cylinder Head Assy.

101 399418315 Gasket Assy. 1

102 399458304 Alternator Assy. 1

103 392467003 Bearing 1

104 330723526 Recoil, Rope Handle 1

105 317723575 Screw, Valve Adjusting 2

106 336718301 Flange Bolt M6 x 12 2

107 355428317 Quick Oil Drain Assy. 1

108 399718313 Rocker Arm 2

WIRING DIAGRAM

Wiring Diagram

YELLOW

BLACK

BLUE

GREEN

RED

WHITE

GREEN YELLOW

WHITE GREEN

BROWN

BLACK WHITE

B/W

G/Y

W/G

PURPLE

PINK

LPG

SM2

SELECTOR SWITCH 2

ALTERNATOR

BLOCK

AC COIL

20A

CIRCUIT BREAKER

30A

CIRCUIT BREAKER

CONTROL BOX BLOCK

PARALLEL

PORTS

50A

CIRCUIT BREAKER

SPARK

PLUG

TCI UNIT

OIL LEVEL SW

FUEL CUT

SOLENOID

LPG CUT

SOLENOID

W/G

GAS LEVEL

GAUGE

ENGINE

BLOCK

B/W

STARTERBATTERY

FUSE

B/W

ECO.SW

USB-A+CDC12V

10A

CIRCUIT BREAKER

BATTERY CHARGING PORT

G/Y

SELECTOR SWITCH 1

LPG

GAS

OFF

ENGINE SWITCH

2 3 4 5 6 7 8 10 11 12

SELECTOR

SWITCH 1/2

SM2SM1

NO-COM NO-COM

LPG CUT

SOLE

GAS CUT

SOLE

UN-WORK

WORKLPG

OFF

GAS

UN-WORK

UN-WORKUN-WORK

WORK

ENGINE SWITCH

LPG/NG.SW

LPG/GAS.SW

CO MODULE

DISPLAY

MODULE

INDICATOR

LIGHT

INVERTER MODULE

GROUND

TERMINAL

NO-COM

NC-COM

SM1

W W

G/Y

SPEED

PROTECTION

MODULE

G/Y

G/Y G/Y

G/Y

TT-30R

L14-30R

RESET

GFCI 5-20R

TEST

1 2 3

4 5 6

7 8 9

10 11 12

STEPPER MOTOR

COM

SM2

COM

SM1

SERVICE – WARRANTY

For service information contact FIRMAN 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 Qualications

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.

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, modied,

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

MERCHANTABILITY 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.

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.

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 receipts 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 exist

s. 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.

(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 instructio

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

off-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.

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.

without the written permission is expressly prohibited.

P/N:399748302 Rev:00 0426

Firman WT12579 Tri Fuel Inverter Portable Generator 12500/10000W Electric Start 120/240V Parallel Ready CO Alert

Product's Documents

WT12579 User Manual English

Specifications

Firman WT12579 Questions and Answers

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