
P/N:357745481 Rev:05
OWNER’S MANUAL
Read all safety precautions and instructions carefully
before operating equipment.
Ensure engine is stopped and level before performing
any maintenance or service.
IMPORTANT:
Record product information to reference when ordering parts or
obtaining warranty coverage.
Serial Number:
DUAL FUEL GENERATOR
MODEL NUMBER
H05751
Rev Level:00
DO NOT RETURN TO
STORE!
CALL US FIRST!
CUSTOMER HOTLINE
1-844-347-6261
FOR QUESTIONS OR SERVICE
INFORMATION
Purchase Date:

Table of Contents
. . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Safety Precautions . . . . . . . . . . . . . . . . . . . . .2
Unpacking the Generator. . . . . . . . . . . . . . . .6
Parts Included. . . . . . . . . . . . . . . . . . . . . . . .7
Removal of Shipping Supports . . . . . . . . . . . . 8
Assembly . . . . . . . . . . . . . .. . . . . . . . . . . . . . . 9
Install the Wheel Kit . . . . . . . . . . . . . . . . . . 9
Install the Support Leg. . . . . . . . . . . . . . . . 9
. . . . . . . . . . . . . 10
Controls and Features. . . . . . . . . . . . . . . . . 11
Generator. . . . . . . . . . . . .. . . . . . . . . . . . . .11
Control Panel. . . . . . . . . . . . . . . . . . . . . . . 12
Specifications. . . . . . . . . . . . . . . . . . . . . . . . 13
Add Engine Oil . . . . . . . . . . . . . . . . . . . . . .14
Low Oil Shutdown . . . . . . . . . . . . . . . . . . .14
Add Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Operation at High Altitude . . . . . . . . . . .17
Grounding. . . . .. . . . . . . . . . . . . . . .. . . . . .18
System.. . . . . . . . . . . . . . . . . . . . . . .. . . . . .18
Operation . . . . . . . . . . . . . . . . . . . . . . . . .. . . . 19
Generator Location . . . . . . . . . . . . . . . . . . 19
Surge Protection . . . . . . . . . . . . .. . . . . . . .19
Connecting Electrical Loads . . . . . . . .. . . 24
Stopping the Engine . . . . . . . . . . . . . . . . . 24
Low Oil Shutdown . . . . . . . . . . . . . . . . . . 25
Do Not Overload Generator . . . . . . . . . . . 25
Introduction
Battery Cable Connection
Connecting to a Building’s Electrical
Maintenance And Storage. . . . . . . . . . . . . . 27
Maintenance Schedule . . . . . . . . . . . . . 27
Engine Maintenance .. . . . . . . . . . . .. . . . 28
Change Engine Oil . . .. . . . . . . . . . . . . . 28
Air Filter Maintenance. . . . . . . . . . . . . .28
Spark Plug Maintenance. . . . . . . . . . . . 29
Cleaning Fuel Strainer . . . . . . . . . . . . 29
. . . 29
Generator Maintenance . . . . . . . . . . . . . . 30
. . . . . . . . . . . . . . . 30
Service and Storage . . . . . . . . . . . . . . . .. 31
Trouble Shooting . . . . . . . . . . . . . . . . . . . . .33
Parts Diagram and Parts List . . . . . . . . . . 34
Generator Parts Diagram . . . . . . . . . . . . 34
Engine Parts Diagram . . . . . . . . . .. . . . . 35
Parts List . . . . . . . . . . . . . . . . . . . . . . . . . 36
Service Information . . . . . . . . . . . . . .. . . . . 38
Warranty. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Inspect Muffler and Spark Arrester
Battery Replacement
English Customer Service: 1-844-FIRMAN1
Starting the Generator (Recoil Start-Gasoline). . 20
Indicator light - Battery Power Saving Mode . . 25
Starting the Generator (Electric Start-LPG) .. 23
Starting the Generator (Recoil Start-LPG). . 20
Starting the Generator (Electric Start-Gasoline) .. 22

Thank you for purchasing a FIRMAN generator.
This manual covers operation and maintenance of the FIRMAN generators. 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 other wise improve the generator and this
documentation at any time without prior change.
Page 01
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 equipment.
Save these original instructions for future reference.
Important Safety Information
The manufacturer cannot possibly anticipate every possible circumstance that might involve a
hazard. The warnings in this manual and the tags and decals affixed to the unit are therefore not
all-inclusive. If you use a procedure, work method or operating technique that the manufacturer
does not specifically recommend you must satisfy yourself that it is safe for you and others. You
must also make sure that the procedure work method or operating technique that you choose
does not render the generator unsafe.
SAFETY INFORMATION
DANGER WARNING CAUTION
DANGER indicates a
potentially hazardous
situation which, if not
avoided. WILL result in
death or serious injury.
WARNING indicates a
potentially hazardous
situation which, if not
avoided, could result in
death or serious injury.
CAUTION indicates a
potentially hazardous
situation which, if not
avoided, may result in minor
or moderate personal injury,
or property damage.
Toxic Fumes
Fire Hazard
Hot Surface.
Do Not Touch the Surface.
Kickback
Risk of Electric Shock
Explosion Hazard
Rotating Parts Entanglement
Hazard
Operator’s Manual
INTRODUCTION
English Customer Service: 1-844-FIRMAN1

SAFETY PRECAUTIONS
Page 02
WARNING
POISONOUS GAS HAZARD.
•
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English Customer Service: 1-844-FIRMAN1

Page 03
CORRECT USAGE
Example location to reduce risk of carbon monoxide poisoning
•
ONLY use outside and downwind, far away from windows, doors and vents.
•
Direct exhaust away from occupied spaces.
INCORRECT USAGE
Do not operate in any of the following locations:
Near any door, window or vent
Garage
Basement
Crawl Space
Living Area
Attic
Entry Way
Porch
Mudroom
English Customer Service: 1-844-FIRMAN1

Page 04
WHEN OPERATING EQUIPMENT
•
DO NOT tip engine or equipment at angle
which causes fuel or oil to spill.
DO NOT stop engine by moving choke
control to “Start” position.
•
•
WHEN TRANSPORTING, MOVING
OR REPAIRING EQUIPMENT
Transport/move/repair with fuel tank
EMPTY or with fuel shut OFF.valve
•
•
DO NOT tip engine or equipment at angle
which causes fuel or oil to spill.
Disconnect spark plug wire.
•
WHEN STORING FUEL OR EQUIPMENT
WITH FUEL IN TANK
•
WARNING
•
•
WARNING
Generator voltage could cause
electrical shock or burn resulting
in death or serious injury.
•
WARNING
•
•
NEVER start or stop engine with electrical
devices plugged in and turned on.
WARNING
Gasoline, gasoline vapors and liquid petroleum
gas(LPG) are extremely flammable and explosive
which could cause burns, fire, or explosion resulting
in death or serious injury and/or property damage.
WHEN ADDING OR DRAINING GASOLINE
Turn generator engine OFF and let it cool at
least 2 minutes before removing fuel cap.
Loosen cap slowly to relieve pressure in tank.
Fill or drain fuel tank outdoors.
•
•
DO NOT overfill tank. Allow space for fuel
expansion.
If fuel spills, wait until it evaporates before
starting engine.
•
Keep fuel away from sparks, open flames,
pilot lights, heat, and other ignition sources.
Check fuel lines, tank, cap, and fittings
frequently for cracks or leaks. Replace if
necessary.
DO NOT light a cigarette or smoke.
•
•
•
•
WHEN STARTING EQUIPMENT
Ensure spark plug, muffler, fuel cap, and air
cleaner are in place.
•
DO NOT crank engine with spark plug
removed.
•
Use approved transfer equipment, suitable
for the intended use, to prevent backfeed by
isolating generator from electric utility
workers.
English Customer Service: 1-844-FIRMAN1
Make certain that a LPG cylinder is not attached
to generator and is securely stowed away.
•
Do not store gasoline or LPG cylinder near
furnaces, water heaters, or any other appliances
that produce heat or have automatic ignitions.
•

Page 05
WARNING
Unintentional sparking
could cause fire or
electric shock resulting
in death or serious
injury.
WHEN ADJUSTING OR MAKING REPAIRS TO
YOUR GENERATOR
Disconnect the spark plug wire from the
spark plug and place the wire where it cannot
contact spark plug.
•
WHEN TESTING FOR ENGINE SPARK
Use approved spark plug tester.
•
DO NOT check for spark with spark plug
removed.
•
WARNING
NEVER operate generator without protective
housing or covers.
DO NOT wear loose clothing, jewelry or
anything that could be caught in the starter
or other rotating parts.
Tie up long hair and remove jewelry.
•
•
•
•
•
DO NOT exceed the generator’s wattage
amperage capacity.
Start generator and let engine stabilize
before connecting electrical loads.
NOTE:
•
•
•
•
CAUTION
Exceeding generators wattage/amperage capacity
could damage generator and/or electrical devices
connected to it.
Connect electrical loads in OFF position,
then turn ON for operation.
Turn electrical loads OFF and disconnect
from generator before stopping generator.
•
•
•
DO NOT use generator with electrical cords
which are worn, frayed, bare or otherwise
damaged.
DO NOT operate generator in the rain or
wet weather.
DO NOT handle generator or electrical
cords while standing in water, while
barefoot, or while hands or feet are wet.
DO NOT allow unqualified persons or
children to operate or service generator.
•
WARNING
Exhaust heat/gases could ignite combustibles,
structures or damage fuel tank causing a fire,
resulting in death or serious injury and/or
property damage.
Contact with muffler area could cause burns
resulting in serious injury.
DO NOT touch hot parts and AVOID hot
exhaust gases.
Allow equipment to cool before touching.
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
defined in Section 4442, maintained in
effective working order. Other states or
federal jurisdictions may have similar laws.
Contact the original equipment manufacturer,
retailer, or dealer to obtain a spark arrester
designed for the exhaust system installed on
this engine.
Replacement parts must be the same and
installed in the same position as the original
parts.
•
•
•
•
When using generator for backup power,
notify utility company.
Use a ground fault circuit interrupter (GFCI)
in any damp or highly conductive area,
such as metal decking or steel work.
DO NOT touch bare wires or receptacles.
•
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•
English Customer Service: 1-844-FIRMAN1

Page 06
•
•
•
•
•
Use generator only for intended uses.
If you have questions about intended use,
ask dealer or contact local service center.
Operate generator only on level surfaces.
DO NOT expose generator to excessive
moisture, dust, dirt, or corrosive vapors.
DO NOT insert any objects through cooling
slots.
If connected devices overheat, turn them off
and disconnect them from generator.
Shut off generator if:
-Electrical output is lost.
-Equipment sparks, smokes, or emits flames.
-Unit vibrates excessively.
•
•
WARNING
Medical and Life Support Uses.
In case of emergency, call 911 immediately.
NEVER use this product to power life support
devices or life support appliances.
NEVER use this product to power medical
devices or medical appliances.
Inform your electricity provider immediately
if you or anyone in your household depends
on electrical equipment to live.
Inform your electrical provider immediately
if a loss of power would cause you or anyone
in your household to experience a medical
emergency.
•
•
•
•
•
NOTE:
Improper treatment of generator could damage
it and shorten its life.
English Customer Service: 1-844-FIRMAN1
Fuel Safety
DANGER
GASOLINE AND GASOLINE VAPORS ARE HIGHLY
FLAMMABLE AND EXPLOSIVE.
Fire or explosion can cause severe burns or death.
Unintentional startup can result in entanglement,
traumatic amputation or laceration.
Gasoline expands or contracts with ambient
temperatures. Never fill the gasoline tank to
full capacity, as gasoline needs room to expand
if temperatures rise.
Gasoline can cause a fire or explosion if ignited.
Gasoline is a liquid fuel but it’s vapors can ignite.
•
•
•
Gasoline is a skin irritant and needs to be cleaned
up immediately if spilled on skin or clothes.
•
Gasoline has a distinctive odor, this will help
detect potential leaks quickly.
•
In any gasoline fire, flames should not be
extinguished unless by doing so the fuel supply
valve can be turned OFF. This is because if a fire is
extinguished and a supply of fuel is not turned OFF,
then an explosion hazard could be created.
•
Liquid Petroleum Gas (LPG/Propane):
This generator is dual fuel and capable of running
with both gasoline and Liquid Petroleum Gas
(LPG/Propane).
•
If you smell gas: close off the gas supply. Make
sure there is no leak before using the generator.
•
•
•
•
•
•
Gasoline:
Liquid Petroleum Gas (LPG) is highly flammable
and explosive. Fire or explosion can cause severe
burns or death.
Do not use or store LPG cylinder in a building,
garage or enclosed area.
Do not check for leaks with a lighted match or
flame.
The LPG cylinder valve should be fully closed
when the generator is not in use or is running
with gasoline.
DANGER
WARNING
Device used for handling LPG must be installed
and used in strict conformance with NFPA 58
(Liquefied Petroleum Gas Code) and NFPA 54
(National Fuel Gas) and all other codes, regulations
and manufacturer recommendations.
Never use a gas container, LPG connector
hose, LPG cylinder or any other fuel item that
is damaged or appears damaged.
The LPG cylinder valve should be fully closed
when the generator is not in use or is running
with gasoline.
•
•
The regulator/hose assembly and cylinder
valve must be inspected before each use for
leaks or sign of damages.

Page 07
English Customer Service: 1-844-FIRMAN1
UNPACKING THE GENERATOR
•
•
Parts Included
Your gasoline powered generator ships with
the following parts:
1. Axle pin . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
2. 10.0" in. Wheel . . . . . . . . . . . . . . . . . . . . . . . . . 2
3. Flat Washer. . . . . . . . . . . . . . . .. . . . . . . . . . . . . .2
4. Cotter pin. . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . .2
5. Engine Oil(Bottle) . . . .. . . . . . . . . . . . . . . . . . . .1
6. Oil Funnel . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . 1
7. Wrench for Spark plug . . . . . . . . . . . . . . . . . . .1
8. Double Open wrench (10mm & 12mm). . . . 2
9. Support Leg with Vibration Mounts . . . . . . 1
10. Flange Bolt (M8x16 for Support Leg) . . . . . 2
11. Flange Lock Nut (M8) . . . . . . . . . . . . . . . . . . . 4
12. Flange Bolt M6X25. . . . . . . . . . . . . . . . . . . . . .2
13. Rubber Support
15. Handle . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . 1
16.
17. Manual. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
18. Quick Reference Guide . . . . . . . . . . . . . . . . . 1
. . . . . . . . . . . . . . . . . . . . . . . .2
14. Flange Lock Nut (M6) . . . . . . . . . . . . . . . . . . . 4
. . . . . . . . . . . . . . . . . . . . . . . . . . . 1
LPG Hose With Regulator 5 ft. (1.5 m) . . . 1
19. Hose Holder
If you smell gas: close off the gas supply. Spray
a soapy water solution to check all connections
for leaks before attempting to use generator.
Contact a qualified technician to inspect and
repair the LPG system if a leak found before
using the generator.
•
CAUTION
LPG under pressure is highly flammable and
can cause a fire or explosion if ignited.
LPG is heavier than air and can accumulate in
confined spaces and low places in the event
of a leak.
LPG has a distinctive odor to help detect
potential leaks.
Do not allow children to tamper or play with
the LPG cylinder.
In the event of an LPG fire, flames should not
be extinguished unless by doing so the fuel
supply valve can be turned off. If the fire is
extinguished and a supply of fuel is not turned
off, an explosion hazard greater than the fire
hazard could be created.
Keep a fire extinguisher near the generator all
the time.
Always keep the LPG cylinder in an upright
position.
Do not subject LPG cylinder to excessive heat.
Contact with liquid contents of the cylinder
will cause freeze burns to the skin.
An LPG cylinder not connected for use shall
not be stored in the vicinity of the generator.
When transporting and storing, turn off the
cylinder valve and fuel selector switch, and
disconnect the cylinder.
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10
11
12
13
14
15
16
17
18
19

Page 08
English Customer Service: 1-844-FIRMAN1
Install the Wheel Kit
The wheel kit is not intended for over-the-road
use.
Install the Support Leg
ASSEMBLY
A
B
C
The generator requires some assembly prior to
usage. If problems arise when assembling the
generator, call 1-844-347-6261.
1. Before adding wheels, tip the generator on
its side.
2. Slide the axle pin A through the wheel B.
3. Slide the axle pin A through the mount point
on the frame and flat washer D.
4. Secure the wheel and axle pin with the cotter
pin C.
5. Repeat steps 2-4 to attach another wheel.
3. Tip the generator slowly so that it rests on the
wheels and support leg.
4. Tighten bolt E and nut F with provide wrenches.
CAUTION
D
2. Attach the support leg (G) to the generator
frame with flange bolt (E) (M8X16) and flange
lock nut(F) (M8).
1. Attach the rubber support (H) to the support
leg (G) with flange bolt (I) (M6X25) and flange
lock nut(J) (M6).

Page 09
English Customer Service: 1-844-FIRMAN1
Battery Cable Connection
NOTE:
The generator comes equiped with the positive(red) and negative(black) cables already attached
to battery terminals.
1. Cut wire tie that is binding the black battery cables A and B.
2. Insert the male connector of cable A into female connector of cable B.

Page 10
CONTROLS AND FEATURES
Generator
1- Fuel Gauge
2- 8.0 Gallon Capacity Fuel Tank
3- Fuel Cap
4- Choke Lever(behind air filter box)
5- Air Filter
6- 439cc FIRMAN OHV Engine
7- Recoil Starter
8- 10.0" Flat Free Wheel
9-
10-
11-
12-
13-
Oil Filler Cap
Battery
Outlet Cover
Control Panel
Handle
14- LPG Hose Connector(Inlet)
15- Hose Holder
16- LPG Hose with Regulator
English Customer Service: 1-844-FIRMAN1
*We are always working to improve our products. Therefore, the enclosed product may differ
slightly from the image on this page.
2
①
②
③
⑤
⑥
⑦
⑧
⑨
⑩
⑪
⑫
④
⑬
⑭
⑮
⑯

2
3
4
Page 11
NOTE:
Total power drawn from all receptacles must not exceed the name plate rating.
Engine Start Switch – Used to start engine
from the starter motor(Electric start model
only). 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.
Control Panel
English Customer Service: 1-844-FIRMAN1
1
3-1 Data-Minder(Multi-Meter) – Push the
SELECT button to show the Voltage, Hertz
and running hours.
5
6
120V, 30A Twist-Lock (NEMA L5-30R) –
Maximum full load 30 Amp current may be
drawn from this 120 Volt receptacle.
7
8
Indicator Light
When the fuel selector switch is turned to the
“GAS” or “LPG” position, the indicator light will
become RED up to 4 minutes(before goes off).
Starting the engine successfully during these
4 minutes will turn the indicator light GREEN.
MUST HAVE SOLID RED INDICATOR LIGHT
TO BE ABLE TO START THE GENERATOR. THE
GENERATOR CANNOT BE STARTED DURING
BATTERY POWER SAVING MODE UNLESS
THE FUEL SELECTOR SWITCH IS TURNED TO
THE “OFF” POSITION AND THEN TURNED
BACK TO THE “GAS” OR “LPG” POSITION.
See Indicator light-Battery power Saving
Mode section for more information.
3
4
2
1
11
5
6
7
8
9
10
Ground Fault Circuit Interrupter conforms to UL 943,
and NEC requirements. This device protects
you against hazardous electrical shock that may be
caused if your body becomes a path through which
electricity travels to reach ground. This could happen
when you touch an appliance or cord that is “ live “
through faulty mechanism, damp or worn insulation, etc.
120V, 20A Duplex GFCI (Ground Fault
Circuit Interrupter) – (NEMA 5-20R)
This receptacle is rated so that a total of 20 amps
may be drawn regardless of whether both halves or
just one receptacle is used.
Ground Terminal – Consult an electrician
for local grounding regulations.
Fuel Selector Switch – Use to select and turn
on gasoline or LPG fuel source. Fuel (gasoline)
valve is closed when the switch is on “OFF” or
“LPG” positions. Engine switch is on when the
switch is on “GAS” or “LPG” positions.

Page 12
English Customer Service: 1-844-FIRMAN1
9
10
11
Outlet Cover - Protect the receptacles from
dust and debris.
LPG Hose Connector(Inlet) – Used to connect
LPG hose to generator.
120VAC, 20AMP GFCI RECEPTACLE
This unit is equipped with a ground fault circuit
interrupter (GFCI). This device meets applicable
federal, state and local codes .
A GFCI receptacle does NOT protect against
circuit overloads, short circuits, or shocks. For
example, electric shock can still occur if a person
touches charged electrical wires while standing
on a non-conducting surface, such as a wood floor.
Definition: Instead of following its normal safe
path, electricity passes through a persons body
to reach the ground. For example, a defective
appliance can cause a ground fault.
A GFCI receptacle is different from conventional
receptacles. In the event of a ground fault, a GFCI
will trip and quickly stop the flow of electricity to
prevent serious injury.
1. Plug a test lamp into the receptacle.
2. Start the generator, the test lamp should be on.
3. Press the “Test” button located on the front
of the receptacle to trip the device.
4. This should stop the flow of electricity making
the lamp shut off. The GFCI’s indicator light comes
off.
RESET
TEST
TEST MONTHLY
FOLLOW DIRECTIONS
RESET BUTTON
Receptacle
Outlet
LED Indicator Light
TEST BUTTON
Outlet
5. To restore the flow of electricity, press the
“RESET” button on the front of the receptacle.
If the GFCI does not perform in this manner, do
not use the receptacle. Contact a local service
dealer or costumer service.
6. This outlet is protected against overload by
a 20A push-to-reset circuit breaker. Use the
outlet to power 120V AC, single-phase, 60 Hz,
electrical loads requiring up to a combined
2400 watts (2.4 kW) or 20 amps of current.
Testing the GFCI: Test the GFCI outlet every
month as follows:
SELF-TEST OPERATION
A Self-Test GFCI receptacle has all the features
of a conventional GFCI receptacle. In addition,
this receptacle tests itself periodically to confirm
the GFCI electronics are functional. The Indicator
Light will be solid green when the GFCI is powered
from Line side and working correctly.
Self-Test Indications: If the Indicator Light is solid
orange or flashing red a problem may exist.
Press the TEST button to trip the GFCI. If unable to
Reset, replace the GFCI.
120/240V, 30A Twist-Lock – (NEMA L14-30R)
Maximum 30 Amp current maybe drawn from
this 120/240 Volt receptacle.

Page 13
SPECIFICATIONS
Model
Rated AC Voltage
Phase
Power Factor
Voltage Regulator
Alternator Type
Running Watts
Starting Watts
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
120/240V
H05751
7125(GAS )/7125(LPG)OLINE
AVR
Single
1
Single Cylinder, 4-Stroke OHV Air Cooled
439cc
Breakless Ignition Type, Flywheel Magneto
Unleaded Automotive Gasoline/LPG
8.0 Gallon
37.2 oz(1.1L)
Counter Clockwise (Facing P.T.O.)
Float
Brushed
Polyurethane Type
Yes
5700(GASOLINE)/5700(LPG)
FIRMAN
Rated Fequency
60Hz
Oil Type
See “Add Engine Oil” Section
AN IMPORTANT MESSAGE ABOUT TEMPERATURE:
When operated above 77°F(25°C) there may be a decrease in power.
Maximum wattage and current are subject to and limited by such factors as fuel BTU content
ambient temperature, altitude, engine condition and etc. Maximum power decreases about
3.5% for each 1,000 feet above sea level; and will also decrease about 1% for each 10°F(6°C)
above 60°F(16°C) ambient temperature.
•
•
Recoil/Electric Start
English Customer Service: 1-844-FIRMAN1
Total Harmonic Distortion(THD)
Standard
AC Grounding System
Neutral Bonded To Frame

ADD ENGINE OIL
Page 14
1.Place generator on a flat, level surface.
2.Clean area around oil fill and remove yellow
oil fill cap/dipstick.
3.Wipe dipstick clean.
NOTE:
The engine is equipped with a low oil shut-off and
will stop when the oil level in the crankcase falls
below the threshold level.
NOTE:
We consider the first 5 hours of run time to be
the break-in period for the unit. During the break
in period stay at or below 50% of the running
watt rating and vary the load occasionally to allow
stator windings to heat and cool. Adjusting the
load will also cause engine speed to vary and help
seat piston rings.
CAUTION
The unit is equipped with a low oil shutdown.If
the oil level becomes lower than required,the
sensor will activate a warning device or stop the
engine.
If generator shuts off and the oil level is within
specifications, check to see if generator is sitting
at an angle that forces oil to shift. Place on an
even surface to correct this. If engine fails to
start, the oil level may not be sufficient to
deactivate low oil level switch. Make sure the
sump is completely full of oil.
(H)
DRAIN PLUG
(L)
5.Replace oil fill cap/dipstick and fully tighten.
6.Oil level should be checked prior to each use
or at least every 8 hours of operation. Keep oil
level maintained.
4.Using oil funnel, slowly pour contents of
provided oil bottle into oil fill opening to the
"H" mark on dipstick. Be careful do not
overfill. Overfilling with oil could cause the
engine to not start or hard starting.
Low Oil Shutdown
Degrees Celsiusº(Outside)
Full Synthetic 5W-30
Degrees Fahrenheitº(Outside)
5W-30 10W-40
10W-30
CAUTION
H
L
English Customer Service: 1-844-FIRMAN1

ADD FUEL
Page 15
Fuel must meet these requirements:
•
Clean, fresh, unleaded gasoline.
Use regular UNLEADED gasoline with the
generator engine with a minimum 87 octane
/ 87 AKI (91 RON).
For high altitude use, see "Operation at High
Altitude".
Do not use gasoline with more than 10%
alcohol such as E85 or ethanol.
•
•
Failure to follow Operator's Manual for fuel
recommendations voids warranty.
Avoid generator damage.
DO NOT use unapproved gasoline such as E85.
DO NOT mix oil in gasoline.
DO NOT modify engine to run on alternate fuels.
•
•
•
WARNING
Fuel and its vapors are extremely flammable
and explosive which could cause burns, fire or
explosion resulting in death, serious injury
and/or property damage.
Fill fuel tank outdoors.
DO NOT overfill tank. Allow space for fuel
expansion. If the tank is overfilled, fuel
can overflow onto a hot engine and cause fire
or explosion. Wipe up any spilled fuel
immediately.
If fuel spills, wait until it evaporates before
starting engine.
Keep fuel away from sparks, open flames,
pilot lights, heat, and other ignition sources.
Check fuel lines, tank, cap and fittings
frequently for cracks or leaks. Replace if
necessary.
DO NOT light a cigarette or smoke when
filling the fuel tank.
•
•
•
•
1.Clean area around fuel fill cap, remove cap.
2.Slowly add unleaded fuel to fuel tank. Be
careful not to fill 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 or wipe up
any spilled gasoline.
CAUTION
Slowly add unleaded gasoline to fuel tank.
Do not overfill tank.
Do not fill above the red line indicator.
This will allow expansion in hot weather
and prevent overflow.
•
•
•
English Customer Service: 1-844-FIRMAN1
Red Line Indicator
1.Gasoline
2-Connecting Liquid Petroleum Gas
(LPG/Propane) Cylinder
•
•
Liquid Petroleum Gas (LPG) is highly flammable
and explosive. Fire or explosion can cause severe
burns or death.
Do not use or store LPG cylinder in a building,
garage or enclosed area.
DANGER
•
Do not place the LPG cylinder in the path of
muffler outlet.
IMPORTANT: It is important to prevent gum
deposits from forming in fuel system parts such
as the carburetor, fuel hose or tank during storage.
Alcohol-blended fuels (called gasohol, ethanol
or methanol) can 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. To avoid engine problems, the
fuel system should be emptied before storage of
30 days or longer. See the " Long Term Storage"
section. Never use engine or carburetor cleaner
products in the fuel tank as permanent damage
may occur.

Page 16
English Customer Service: 1-844-FIRMAN1
•
Never use a gas container, LPG connector
hose, LPG cylinder or any other fuel item that
is damaged or appears damaged.
The LPG cylinder valve should be fully closed
when the generator is not in use or is running
with gasoline.
•
•
The regulator/hose assembly and cylinder
valve must be inspected before each use for
leaks or sign of damages.
Use only 20 or 30 lb capacity cylinders with
Type 1, right hand Acme threads with this
generator. Verify the re-qualification date
on the tank has not expired. Do not use rusted
or damaged cylinders.
All new cylinders must be purged of air and
moisture prior to filling. Used cylinders that
have not been plugged or kept closed must
also be purged. The purging process should
be done by your propane gas supplier.
Do not connect or disconnect the LPG cylinder
in enclosed area.
Do not install or replace the LPG cylinder near
open flames, pilot lights, or sparking electrical
equipment such as power tools, welders and
grinders.
Attach the LPG regulator/hose assembly
(included) to the LPG hose connector (inlet)
on the control panel of the generator. Tighten
the nut with 19 mm or adjustable wrench.
Remove the safety plug or cap from the
cylinder valve.
Attach the other end of the LPG regulator/hose
assembly to the cylinder valve. Tighten the nut
by hand clockwise to a positive stop. Do not
use a wrench to tighten. Use of wrench may
damage quick closing coupling nut and result
in a hazardous condition.
Do not use tape or any type sealant to seal the
LPG hose connections.
Always position the cylinder so the connection
between the valve and the regulator won’t cause
bends or kinks in the hose.
Spray a soapy water solution (one part liquid
detergent and one part water) to check all
connections for leaks before attempting to
use generator. Slowly open the cylinder valve.
A leak exists if bubbles appear or grow larger
in size or number. This must be corrected before
using the generator. Contact your local
Authorized Service Facility for assistance. Do
not attempt to make repairs yourself.
Do not check for leaks with a lighted match
or flame.
Do not light or smoke cigarettes.
Check the fuel system periodically for leaks
or signs of damages.
LPG under pressure is highly flammable and
can cause a fire or explosion if ignited.
CAUTION
•
LPG is heavier than air and can accumulate in
confined spaces and low places in the event
of a leak.
•
If you smell gas: close off the gas supply. Spray
a soapy water solution to check all connections
for leaks before attempting to use generator.
Contact a qualified technician to inspect and
repair the LPG system if a leak found before
using the generator.
•
You must use the supplied regulator/hose
assembly for safe operation.
•
WARNING
Device used for handling LPG must be installed
and used in strict conformance with NFPA 58
(Liquefied Petroleum Gas Code) and NFPA 54
(National Fuel Gas) and all other codes, regulations
and manufacturer recommendations.
If you smell gas: close off the gas supply. Make
sure there is no leak before using the generator.
•
•
•
Do not check for leaks with a lighted match or
flame.
The LPG cylinder valve should be fully closed
when the generator is not in use or is running
with gasoline.

Page 17
English Customer Service: 1-844-FIRMAN1
3-Permanent Connection to a large
Propane supply tank:
In the instance that you would need to connect
your generator to a large propane Supply tank,
larger than 20 or 30 lb DOT cylinder, it is
recommended to contact your Gas Equipment
Company. Various equipment for use with LPG,
is required for proper conformance to all NFPA
regulations. Your Gas Equipment Company can
help you select and install the proper regulator,
fittings and connections to meet all the Codes
and manufacturer regulations. Each installation
may be different and will required proper equipment.
Contact your Gas Equipment Company to assure
that you are meeting all NFPA 58 (Liquefied
Petroleum Gas Code) and NFPA 54 (National Fuel
Gas) Codes.
Operation at High Altitude
At altitudes over 5,000 feet(1524 meters), a
minimum 85 octane / 85 AKI (89 RON) gasoline
is acceptable.
The density of air at high altitude is lower
than at sea level. Engine power is reduced
as the air mass and air-fuel ratio decrease.
Engine power and generator output will be
reduced approximately 3.5% for every 1000 feet
of elevation above sea level. This is a
natural trend and cannot be changed by
adjusting the engine. At high altitudes
increased exhaust emissions can also result
due to the increased enrichment of the air
fuel ratio.
Other high altitude issues can include hard
starting, increased fuel consumption and
spa rk p lug fou l i n g . T o al l ev i a t e hi g h
al titu de iss u es o ther than the natu ral
power loss, FIRMAN can provide a high
altitude carburetor main jet. The alternative
The part number and recommended minimum
altitude for the application of the high
altitude carburetor main jet is listed in the
table below.
main jet and installation instructions can be
obtained by contacting Customer Support.
Installation instructions are also available in the
Technical Bulletin area of the FIRMAN internet site.
Altitude main jet 1
Altitude main jet 2
439cc
380717004
380717005
Altitude
3000-6000Feet
6000-8000Feet
OPEN
WARNING
When transporting and storing, turn off the
cylinder valve and fuel selector switch, and
disconnect the cylinder.
Contact with liquid contents of the cylinder
will cause freeze burns to the skin.
•
An LPG cylinder not connected for use shall
not be stored in the vicinity of the generator.
•
•
•
Always keep the LPG cylinder in an upright
position.
Do not subject LPG cylinder to excessive heat.
•
In the event of an LPG fire, flames should not
be extinguished unless by doing so the fuel
supply valve can be turned off. If the fire is
extinguished and a supply of fuel is not turned
off, an explosion hazard greater than the fire
•
hazard could be created.
•
Keep a fire extinguisher near the generator
all the time.
LPG has a distinctive odor to help detect
potential leaks.
•
Do not allow children to tamper or play with
the LPG cylinder.
•

Page 18
Grounding
The National Electric Code requires your generator
must be properly connected to an appropriate
ground to help prevent electric shock.
Failure to properly ground the
generator can result in electric
shock.
WARNING
THERE IS A PERMANENT CONDUCTOR BETWEEN
THE GENERATOR (STATOR WINDING) AND THE
FRAME.
Use approved transfer equipment to prevent
backfeed by isolating generator from electric
utility workers.
When using generator for backup power, notify
utility company.
Use a ground fault circuit interrupter (GFCI) in
any damp or highly conductive area, such as
metal decking or steel work.
DO NOT touch bare wires or receptacles.
DO NOT use generator with electrical cords
which are worn,frayed, bare or otherwise
damaged.
DO NOT operate generator in the rain or wet
weather.
DO NOT handle generator or electrical cords
while standing in water, while barefoot, or
while hands or feet are wet.
DO NOT allow unqualified persons or children
to operate or service generator.
Connecting to a Building's Electrical System
WARNING
Generator voltage could cause
electrical shock or burn resulting
in death or serious injury.
•
•
•
•
•
•
•
•
English Customer Service: 1-844-FIRMAN1

5. OPERATION
Page 19
Generator Location
Make sure you review each warning in order to
prevent fire hazard.
Keep area clear of inflammables or other
hazardous materials.
Select a site that is dry, well ventilated and
protected from the weather.
Keep exhaust pipe clear of foreign objects.
Keep generator away from open flame.
Keep generator on a stable and level surface.
WARNING
Surge Protection
Voltage fluctuation may impair the proper
functioning of sensitive electronic equipment.
WARNING
POISONOUS GAS HAZARD.
•
•
•
•
Do not block generator air vents with paper or
other material.
CAUTION
Tilting can cause fuel spillage.
CAUTION
English Customer Service: 1-844-FIRMAN1

Page 20
English Customer Service: 1-844-FIRMAN1
Starting the Generator (Recoil Start-Gasoline)
1. Before starting the generator, check for loose
or missing parts and for any damage which
may have occurred during shipment.
2. Check oil level and fuel(Gasoline).
8. Do not over-choke. As soon as engine starts
and warms up, move the choke lever to the
“RUN” position.
7. Pull the starter cord slowly until resistance is
felt and then pull rapidly.
5. Disconnect all electrical loads from the
generator. Never start or stop the generator
with electrical devices plugged in or turned
on.
4. Turn the fuel selector switch to “GAS” position.
3. Make sure the LPG cylinder knob is fully closed.
9. Allow generator to run at no load for few
minutes upon each initial start-up to permit
engine and generator to stablize.
Starting the Generator (Recoil Start-LPG]
1. Before starting the generator, check for loose
or missing parts and for any damage which
may have occurred during shipment.
2. Check oil level .
NOTE: When the fuel selector switch is turned
to the “GAS” position, the indicator light will
become RED up to 4 minutes(before goes off).
Starting the engine successfully during these
4 minutes will turn the indicator light GREEN.
6. Move choke lever located on engine to “START”
position.
REMINDER: MUST HAVE SOLID RED INDICATOR
LIGHT TO BE ABLE TO START THE GENERATOR.
THE GENERATOR CANNOT BE STARTED DURING
BATTERY POWER SAVING MODE UNLESS
THE FUEL SELECTOR SWITCH IS TURNED TO
THE “OFF” POSITION AND THEN TURNED
BACK TO THE “GAS” POSITION.
See Indicator light-Battery power Saving
Mode section for more information.

Page 21
English Customer Service: 1-844-FIRMAN1
4. Fully open the LPG cylinder knob.
5. Turn the fuel selector switch to “LPG” position.
9.Move the choke lever to the “RUN” position.
11. Allow generator to run at no load for few
minutes upon each initial start-up to permit
engine and generator to stablize.
3. Connect the regulator to both LPG cylinder and
generator.
NOTE: When the fuel selector switch is turned
to the “LPG” position, the indicator light will
become RED up to 4 minutes(before goes off).
Starting the engine successfully during these
4 minutes will turn the indicator light GREEN.
6. Disconnect all electrical loads from the
generator. Never start or stop the generator
with electrical devices plugged in or turned
on.
7. Move choke lever located on engine to “START”
position.
NOTE:
Do not place the LPG cylinder in the path of muffler outlet.
8. PULL TO-PRIME:-
Pull the starter cord 1-2 times. Pull slowly until
resistance if felt and then pull rapidly.
10. PULL TO RUN:- -
Pull the starter cord slowly until resistance if felt
and pull rapidly to run the unit.
REMINDER: MUST HAVE SOLID RED INDICATOR
LIGHT TO BE ABLE TO START THE GENERATOR.
THE GENERATOR CANNOT BE STARTED DURING
BATTERY POWER SAVING MODE UNLESS
If the engine fails to start in 1-2 pulls with choke in the
“RUN” position, then move choke lever to “START”
position and repeat the “PULL-TO-PRIME” step.
1-2 Times

Page 22
English Customer Service: 1-844-FIRMAN1
Starting the Generator (Electric Start-Gasoline)
1. Before starting the generator, check for loose
or missing parts and for any damage which
may have occurred during shipment.
2. Check oil level and fuel(Gasoline).
4. Turn the fuel selector switch to “GAS” position.
3. Make sure the LPG cylinder knob is fully closed.
When starting engine, pull cord slowly until resistance
is felt and then pull rapidly to avoid kickback.
Keep choke lever in “START” position for only 1
pull of the recoil starter. After first pull, move
choke lever to the “RUN” position for up to the
next 3 pulls of the recoil starter. Too much
choke leads to sparkplug fouling/engine
flooding due to the lack of incoming air. This
will cause the engine not to start.
NOTE: When the fuel selector switch is turned
to the “GAS” position, the indicator light will
become RED up to 4 minutes(before goes off).
Starting the engine successfully during these
4 minutes will turn the indicator light GREEN.
5. Disconnect all electrical loads from the
generator. Never start or stop the generator
with electrical devices plugged in or turned on.
6. Move choke lever located on engine to “START”
position.
7. Flip the engine switch to the "START"(ll) position
for few seconds and then release.
3 sec.
REMINDER: MUST HAVE SOLID RED INDICATOR
LIGHT TO BE ABLE TO START THE GENERATOR.
THE GENERATOR CANNOT BE STARTED DURING
BATTERY POWER SAVING MODE UNLESS
THE FUEL SELECTOR SWITCH IS TURNED TO
THE “OFF” POSITION AND THEN TURNED
BACK TO THE “GAS” POSITION.
See Indicator light-Battery power Saving
Mode section for more information.
See Indicator light-Battery power Saving
Mode section for more information.
THE FUEL SELECTOR SWITCH IS TURNED TO THE “OFF”
POSITION AND THEN TURNED BACK TO THE “LPG”
POSITION.
WARNING

Page 23
English Customer Service: 1-844-FIRMAN1
4. Fully open the LPG cylinder knob.
5. Turn the fuel selector switch to “LPG” position.
9. Allow generator to run at no load for few
minutes upon each initial start-up to permit
engine and generator to stablize.
Starting the Generator (Electric Start-LPG)
1. Before starting the generator, check for loose
or missing parts and for any damage which
may have occurred during shipment.
2. Check oil level .
3. Connect the regulator to both LPG cylinder and
generator.
NOTE: When the fuel selector switch is turned
to the “LPG” position, the indicator light will
become RED up to 4 minutes(before goes off).
Starting the engine successfully during these
4 minutes will turn the indicator light GREEN.
6. Disconnect all electrical loads from the
generator. Never start or stop the generator
with electrical devices plugged in or turned
on.
7. Move choke lever located on engine to “START”
position.
3 sec.
See Indicator light-Battery power Saving
Mode section for more information.
REMINDER: MUST HAVE SOLID RED INDICATOR
LIGHT TO BE ABLE TO START THE GENERATOR.
THE GENERATOR CANNOT BE STARTED DURING
BATTERY POWER SAVING MODE UNLESS
THE FUEL SELECTOR SWITCH IS TURNED TO
THE “OFF” POSITION AND THEN TURNED
BACK TO THE “LPG” POSITION.
9. Move the choke lever to the “RUN” position.
NOTE: Do not place LPG cylinder in the path of muffler outlet.
8. Move the choke lever to the “RUN” position.
8. Flip the engine switch to the "START"(ll) position
for few seconds and then release.

Page 24
English Customer Service: 1-844-FIRMAN1
Stopping the Engine
1. Turn off and remove entire electrical loads.
Never start or stop the generator with
electrical devices plugged in or turned on.
Let the generator run at no-load for two
minutes to stabilize internal temperatures
of the engine and generator.
2. Turn the fuel selector switch to OFF (O)position.
GAS LPG
10. Allow generator to run at no load for few
minutes upon each initial start-up to permit
engine and generator to stablize.
Connecting Electrical Loads
This unit has been pretested and adjusted to
handle its full capacity. Before starting the
generator, disconnect all load. Apply load only
after generator is running. Voltage is regulated
via the engine speed adjusted at the factory for
correct output. Readjusting will void warranty.
1.Let engine stabilize and warm up for a few
minutes after starting.
2.Ensure circuit breaker on control panel is in
on position.
3.Plug in and turn on the desired 120 Volt
AC, single phase, 60Hz electrical loads. It is
better to attach the item with largest load first.
CAUTION
When applying a load, do not exceed the maximum
wattage rating of the generator when using one or
more receptacles. Also, do not exceed the amperage
rating of any one receptacle.
Do not apply heavy electrical load during break-in
period (the first five hours of operations).
Connecting a generator to your electric utility
company's power lines or to another power source
may be against the law. In addition this action, if
done incorrectly, could damage your generator
and appliances and could cause serious injury or
even death to you or a utility worker who may be
working on nearby power lines. If you plan to run
a portable electric generator during an outage,
please notify your electric utility company
immediately and remember to plug your appliances
directly into the generator. Do not plug the
generator into any electric outlet in your home.
Doing so could create a connection to the utility
company power lines. You are responsible for
ensuring that your generator's electricity does not
feed back into the electric utility power lines. If the
generator will be connected to a building electrical
system, consult your local utility company or a
qualified electrician. Connections must isolate
generator power from utility power and must
comply with all applicable laws and codes.
3. Fully close the LPG cylinder knob.

Page 25
English Customer Service: 1-844-FIRMAN1
If a cover is used, do not install until unit has cooled.
WARNING
Fuel and its vapors are extremely flammable and
explosive which could cause burns, fire or
DO NOT stop engine by moving choke control
to “START” position.
Important: Always ensure that the
is in the “OFF” position when the engine
is not in use.
fuel selector
switch
explosion resulting in death, serious injury
and/or property damage.
If the engine will not be used for a period of two
weeks or longer, please see the Storage section
for proper engine and fuel storage.
NOTE: Disconnect the LPG cylinder from the
generator during transportation.
This generator is equipped with an electronic
module which consumes battery power. When
the fuel selector switch is turned to the “GAS” or
“LPG” position, the indicator light will become
RED up to 4 minutes(before goes off).
Indicator light - Battery Power Saving Mode
The indicator light will start FLASHING for 4
minutes in the event of any unwanted shutdown
such as low oil, running out of fuel(gasoline or LPG),
or any other unwanted shutdown. This is a reminder
that the generator is switching to Battery Power
Saving Mode. The generator should be checked
Starting the engine successfully during these 4
minutes will turn the indicator light GREEN.
Starting the engine unsuccessfully or not attempting
to start the engine at all during these 4 minutes will
switch generator to Battery Power Saving Mode in
order to conserve and increase the life of battery.
MUST HAVE SOLID RED INDICATOR LIGHT TO
BE ABLE TO START THE GENERATOR. THE GENERATOR
CANNOT BE STARTED DURING BATTERY POWER
SAVING MODE UNLESS THE FUEL SELECTOR SWITCH
IS TURNED TO THE “OFF” POSITION AND THEN
TURNED BACK TO THE “GAS” OR “LPG” POSITION.
Unwanted Shutdown:
The generator cannot be started during or after
the 4 minutes of FLASHING mode unless the fuel
selector switch is turned to the "OFF" position and
then turned back to the “GAS” or “LPG” position.
for any unwanted shutdown.
This generator is equipped with an automatic
battery charging circuit and the battery will
receive a proper charge when the engine is
running to keep the battery charged.
Low Oil Shutdown
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 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 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.
Do Not Overload Generator
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 first item. It is best to
attach the item with the largest load first.
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.

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English Customer Service: 1-844-FIRMAN1
Observing frost on LPG and regulators
is common during operation and normally is not
an indication of a problem. As LPG vaporizes and
travels from the tank to the generator engine it
expands. The amount of frost that forms can be
affected by the size of the cylinder, the amount
of fuel being used, the humidity of the air and other
operating conditions. In unusual situations this
frost may eventually restrict the flow of LPG gas
cylinders
NOTE:
to the generator resulting in deteriorating
performance. For example, if the tank temperature
is reduced to a very low level then the rate at which
the LPG vaporizes is also reduced and may not
provide sufficient fuel flow to the engine. This is
not an indication of a problem with the generator
but only a problem with the flow of gas from the
LPG cylinder. If generator performance seems
to be deteriorating at the same time that ice
formation is observed on tank valve, hose or
regulator then some actions may be taken to
eliminate this symptom. In these rare situations
it can be helpful to reduce or eliminate the cold
fuel system effects by doing one of the following:
The LPG cylinder can be temporarily warmed
by pouring warm water over the top of the
cylinder.
Exchanging fuel tanks to allow the first tank
to warm up, repeating as necessary
•
Placing the LPG cylinder at the end of the
generator near the handle, where engine fan
air flows out from the generator. This air is
slightly heated by flowing over the engine.
•
•
DO NOT PLACE THE LPG CYLINDER IN THE PATH
OF MUFFLER OUTLET.
DANGER
Muffler

Page 27
English Customer Service: 1-844-FIRMAN1
√
Check for damage and leaks.
Replace if necessary.
LPG Regulator
/Hose Assy.
MAINTENANCE AND STORAGE
MAINTENANCE SCHEDULE
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 Maintenanc Shedule chart above.
Notice Once a year you should clean or replace the spark plug and replace the air filter. New
spark plugs and clean air filter assure proper fuel-air mixture and help your engine run better
and last longer.
ITEM NOTES
Daily(Before
operation)
Initial
25 hours
Every
50 hours
Every
100 hours
(or annual)
Fittings/
Fasteners
Spark Plug
Engine Oil
Air Filter
Fuel Line
Exhaust
System
Engine
Check condition. Adjust gap
and clean. Replace if necessary.
Check oil level.
Clean, replace if necessary.
Check for leakage. Retighten or
replace gasket if necessary.
Check adjust valve clearance.
Clean combustion chamber.
Check. Replace if necessary.
Check fuel hose for cracks or other
damage. Replace if necessary.
√
√
√
√
√
√
√
√
√
√
Replace.
Check spark arrester screen.
Clean/Replace if necessary.
Every
250 hours
√
To be performed by knowledgable/experienced owner or by authorized service center.
*
*
*
Fuel Filter
Clean fuel filter and fuel tank
strainer. Replace if necessary.
√

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English Customer Service: 1-844-FIRMAN1
ENGINE MAINTENANCE
Air Filter Maintenance
Use fresh and high quality lubricating oil to the
specified quantity.
If contaminated or deteriorated oil is used or
the quantity of the engine oil is not sufficient,
the engine damage will result and its life will be
greatly shortened.
NOTE:
Change Engine Oil
To prevent accidental starting, remove and
ground spark plug wire before performing any
service.
If you are using your generator under extremely
dirty or dusty conditions, or in extremely hot
weather, change the oil more often.
Avoid prolonged or repeated skin contact with
used motor oil.
CAUTION
Used motor oil has been shown to cause skin
cancer in certain laboratory animals.
Thoroughly wash exposed areas with soap
and water.
•
•
•
(a) Drain oil by removing the drain plug and the
oil filler cap while the engine is warm.
Change engine oil every 100 hours.
(for a new engine, change oil after 25 hours.)
DRAIN PLUG
Please use a container to dump the
used oil for protecting the environment.
(b) Reinstall the drain plug and fill the engine
with oil until it reaches the HIGH(H) level on the
oil filler cap.
Maintaining an air filter in proper condition is
very important. Dirt induced through improperly
installed, improperly serviced, or inadequate
elements damages and wears out engines.
Always keep the element clean.
(a) Take out the air cleaner, clean it well in
kerosene and dry it.
(b) After wetting the element by clean engine
oil squeeze it tight by hand.
(c)Lastly, put the element in the case and install
it securely.

Page 29
English Customer Service: 1-844-FIRMAN1
Spark Plug Maintenance
Changing the spark plug will help your engine
to start easier and run better.
(a) Remove the spark plug cap.
(d) Adjust the electrode gap to 0.7 to 0.8 mm
(0.028” to 0.031”).
(e) Seat spark plug in position and thread by
hand to prevent cross threading.
(f) Tighten plug with provided wrench and put
the cap back on spark plug.
SPARK PLUG: TORCH F6RTC
NGK BPR6ES
CHAMPION RN9YC or equivalent.
(b) Remove spark plug using provided wrench.
Inspect spark plug for damage and clean
with a wire brush before reinstalling
Inspect Muffler and Spark Arrester
Inspect the muffler for cracks, corrosion, or
other damage. Remove the spark arrester, if
equipped, and inspect for damage or carbon
blockage. If replacement parts are required,
make sure to use only original equipment
replacement parts.
Exhaust heat/gases could ignite combustibles,
structures or damage fuel tank causing a fire,
resulting in death or serious injury and/or
property. Contact with muffler area could cause
burns resulting in serious injury.
WARNING
A
B
A- Spark plug
B- Spark plug cap
c) (
DO NOT touch hot parts and AVOID hot exhaust
gases.
Allow equipment to cool before touching.
Keep at least 5 feet (1.5 m) of clearance on all
sides of generator including overhead.
Replacement parts must be the same and
installed in the same position as the original
parts.
Clean or replace spark arrester as follows:
1. Allow the engine to cool completely before
servicing the spark arrester.
2. Remove the screws securing the spark arrester
in place and the remove it from muffler.
•
•
•
•
Depending on the type fuel used ,the type and
amount of lubricant used, and/or your operating
conditions, the exhaust part and muffler may
become blocked with carbon deposits. If you
notice power loss, you may need to remove these
deposits to restore performance.
Maintenance Valve Clearance
- Intake: 0.1 0.15 mm (0.004 - 0.006 in.)
- Exhaust: 0.1 - 0.15 mm (0.004 - 0.006 in.)
-
To be performed by knowledgable/experienced
owner or by authorized service center.

Page 30
English Customer Service: 1-844-FIRMAN1
3. Carefully remove the carbon deposits from
the spark arrester screen with a wire brush.
Failure to clean the spark arrester will result in
degraded engine performance.
GENERATOR MAINTENANCE
Make certain that the generator is kept clean
and stored properly. Only operate the unit on
a flat, level surface in a clean, dry operating
environment. DO NOT expose the unit to
extreme conditions, excessive dust, dirt,
moisture or corrosive vapours.
DO NOT use a garden hose to clean the generator.
Water can enter the generator through the cooling
slots and damage the generator windings.
Use a damp cloth to clean exterior surfaces of
the generator.
Use a soft bristle brush to remove dirt and oil.
Use an air compressor (25 PSI) to clear dirt and
debris from the generator.
Inspect all air vents and cooling slots to ensure
that they are clean and unobstructed.
CAUTION
CAUTION
4. Replace the spark arrester if it is damaged.
5. Position the spark arrester in the muffler and
attach with the screws.
Spark arrester
screen
Flange
Screw
Battery Replacement
1. Remove the spark plug wire from spark plug.
2. Remove the nut and bolt from the negative(-)
and positive(+) posts.
3. Loosen and remove the screw A on the battery
holding bracket.
4. Remove the battery and recycle and dispose
of properly.
12V sealed lead acid 15AH
LXWXH:180X75X165mm(7.09X2.95X6.5inch)
6. Connect the red positive(+) battery cable to
the battery first.
7. Connect the black positive(-) battery cable
to the battery second.
8. Cover the post with boots.
9. Install the spark plug wire onto spark plug.
5. Install the new battery with follwoing specification:
A(M6)
WARNING
ALWAYS connect the positive (+) battery cable
(red boot) first when connecting battery cables.
ALWAYS disconnect the negative (-) battery
cable (black boot) first when disconnecting
battery cables.
NEVER connect the negative (-) battery cable
(black boot) to the positive (+) post on the
battery.
NEVER connect the positive (+) battery cable
(red boot) to the negative (-) post on the battery.
NEVER touch both battery posts simultaneously.
NEVER place a metal tool across both battery
posts.
ALWAYS use insulated or nonconducting tools
when installing the battery.
To avoid electric shock:

Page 31
English Customer Service: 1-844-FIRMAN1
SERVICE AND STORAGE
Infrequent Service
If the unit is used infrequently, difficult starting
may result. To eliminate hard starting, follow
these instructions:
1. Run the generator at least 30 minutes every
month.
2. Run the generator, then close the fuel shut-off
valve and allow the unit to run until the engine
stops.
3. Move the fuel selector to the "OFF" position.
Long Term Storage
It is important to prevent gum deposits from forming
in essential fuel system parts such as the carburetor,
fuel hoses or tank during storage. Also, experience
indicates that alcohol-blended fuels (called gasohol,
ethanol or methanol) can 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 not being operated,
or is being stored for more than one month, follow
these instructions to avoid engine problems:
1-ADD a properly formulated commercially FUEL
STABILIZER to the tank if it is not already added.
2-Operate the engine for 5-10 minutes to circulate
treated fuel into fuel lines and carburetor before
shutdown.
3- After engine cools down, remove all gasoline
from the fuel tank. Use a commercially available,
non-conductive vacuum siphon.
DANGER
Drain fuel into approved container outdoors,
away from open flame. Be sure engine is cool.
Do not smoke.
4-FUEL STARVATION: Turn fuel selector switch
to “GAS” position. Start and run the generator until it
stops from lack of gasoline. This will dry out all
remaining gasoline in tank, fuel lines and carburetor.
5-Turn fuel selector switch to “OFF” position.
Fully close the LPG cylinder knob if it is open and
disconnect LPG cylinder from the generator.
6-Allow the unit to cool entirely before cleaning
and storage.
7-Change oil with recommended grade oil.
8-Remove spark plug and pour about one teaspoon
of engine oil through the spark plug hole, then pull
the recoil starter several times to distribute the oil for
lubricating the cylinder. Reattach the spark plug.
Pull recoil slowly until resistance is felt. This will
close the valves so moisture cannot enter engine
9-Cover the unit and store in a clean, dry place
out of direct sunlight. NEVER USE WATER TO
CLEAN GENERATOR.
cylinder. Gently release recoil starter.
We recommend always using a fuel stabilizer.
A FUEL STABLIZER will minimize the formulation
of fuel gum deposits during storage, the fuel
stabilizer can be added to the gasoline in the
fuel tank, or into the gasoline in a storage
container.
Note:
•
If it is not practical to empty the fuel tank and
the unit is to be stored for some time, use a
commercially available FUEL STABILIZER added
to the gasoline to increase the life of the gasoline.
Run the unit for 5-10 minutes to circulate treated
gasoline into the fuel lines abs carburetor before
shutdown. DO NOT STORE GENERATOR WITHOUT
FUEL STABILIZER IN FUEL SYSTEM INCLUDING
TANK, FUEL LINES AND CARBURETOR.
•
Any damages or hazards caused by using
improper fuel, improperly stored fuel, and/
or improperly formulated stabilizers, are not
Do not store gasoline from one season to
another season.
•
covered by manufacturer's warranty.
•

Page 32
English Customer Service: 1-844-FIRMAN1
WARNING
Generator exhaust contains odorless and
colorless carbon monoxide gas.
To avoid accidental or unintended ignition of
your generator during periods of storage, the
following precautions should be followed:
When storing the generator for short or extended
periods of time make sure that the fuel selector
switch is in the “OFF” position and the battery
leads have been disconnected from the battery.
The battery powers up the starter motor and the control
module in this generator. This product is equipped with
an automatic battery charging circuit. The battery will
receive charging voltage when the engine is running.
The battery will maintain a proper charge if the unit 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. If the
battery is not able to start the engine, it can be started
manually only on “GAS” position by pulling the engine
recoil cord. If the battery voltage is extremely low, the
charging circuit may not be able to re-charge the battery.
In this case, the battery must be connected to a standard
automotive style battery charger for re-charging before
it can be used.
Battery Charging & Maintenance

TROUBLE SHOOTING
Page 32
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.
1. Disconnect shorted electrical load.
2. Contact authorized service facility.
3. See Don't Overload Generator
4. Contact authorized service facility.
Engine will not start; starts
and runs rough or shuts
down when running.
1. Fuel selector switch set to OFF (O)
position.
3. Low oil level.
4. Dirty air cleaner.
5. Out of gasoline.
6. Stale gasoline.
7. Spark plug wire not connected to
spark plug.
8. Bad spark plug.
9. Water in gasoline.
10. Flooded.
11. Excessively rich fuel mixture.
12. Intake valve stuck open or closed.
13. Engine has lost compression.
1. Set fuel selector switch to “GAS”
or “LPG” position.
3. Fill crankcase to proper level or
place generator on level surface.
4. Clean or replace air cleaner.
5. Fill fuel tank with gasoline.
6. Drain fuel tank and carburetor; fill
with fresh gasoline.
7. Connect wire to spark plug.
8. Replace spark plug.
9. Drain gas tank and carburetor; fill
with fresh gasoline.
10. Wait 5 minutes and re-crank engine.
11. Contact authorized service facility.
12. Contact authorized service facility.
13. Contact authorized service facility.
Engine lacks power.
1. Load is too high.
2. Dirty air filter.
1. Don't Overload Generator
2. Replace air filter.
Engine“hunts”or falters.
1. Carburetor is running too rich or too lean.
1. Contact authorized service facility.
14. Clogged or dirty fuel filter.
5. Clean or replace fuel filter.
14. Clean or replace fuel filter.
3. Clogged or dirty fuel filter.
4. Clogged spark arrester.
3. Clean or replace fuel filter.
4. Clean or replace spark arrester.
2. Clogged or dirty fuel filter.
2. Clean or replace fuel filter.
Engine shuts down when
running.
1. Out of gasoline or LPG.
2. Dirty air cleaner.
3. Low oil level.
1. Fill fuel tank with gasoline or replace
LPG tank.
2. Clean or replace air cleaner.
3. Fill crankcase to proper level or place.
generator on level surface.
5. Clogged or dirty fuel filter.
15. Starting battery may have in sufficient
charge.
15. Check battery output and charge
battery as necessary.
English Customer Service: 1-844-FIRMAN1
16. Out of LPG. 16. Replace LPG tank.
17. LPG cylinder knob is not open. 17. Fully open LPG cylinder knob.
2. The indicator light is OFF or
flashing red.
2. Must have solid red indicator light
to be able to start the engine.
18. Out of battery Power. 18. Start Engine in “GAS” position.
Charge or replace battery.

Page 33
PARTS DIAGRAM AND PART LIST
H05751 PARTS DIAGRAM
English Customer Service: 1-844-FIRMAN1
143
144

Page 34
439cc DUAL FUEL ENGINE PARTS DIAGRAM
English Customer Service: 1-844-FIRMAN1

Page 35
H05751 PARTS LIST
English Customer Service: 1-844-FIRMAN1
NO.Part Number
Qty.
Description
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
357713572
357713501
336713528
357713573
357713574
357713575
380713503
357713506
357713507
336713525
336713524
357713508
336713519
336713523
336713520
336713522
357713509
336713507
336713511
336713512
336713513
336713577
357713510
357713511
357713512
357713513
357713514
336713531
357713515
336713515
357713516
336713538
357713517
336713536
357713518
336713534
336713509
336713533
357713520
357713576
357713523
336713517
357713577
357713524
336713542
336713543
336713544
357713578
336713546
336713547
357713579
336713806
336713549
336713807
336713540
357713580
357713581
336713636
336713639
336713637
336713638
380713532
380713533
357713535
357713592
357713536
357713582
357713583
336713558
357713584
357713550
357713551
Rubber Cap B
Flange Bolt M6×8
Generator Wind Shield
Rotor Assy
Stator Assy
Stator Cover
Generator End Cover
Carbon Brush Assembly
Carbon Brush Holder
Bolt &washer Assemblies
AVR
Flange Bolt M5×16
Terminal Block
Bolt M5×16
Ground Wire
Generator End Cover Cap
Flange Bolt M5×12
Flange Bolt M6×179
Lock Washer Ø6
Washer Ø6
Nut M5
Side Cover Bolt M5×214
Lock Washer Ø5
Flange Bolt M10×265
Lock Washer Ø10
Washer Ø10
Flange Bolt M8×20
Holder,Muff
Flange Bolt M6×12
Muffler Fixed Plate A
Screw&washer Assy M5×14
Holder,Spark Arrester
Arrester,Spark
Muffler Fixed Plate B
Nut M8
Lock Washer Ø8
Flat Washer Ø8
Gskt.,Ext.
Muff.,assy.
Muffler Fixed Plate C
Nut M6
Air Filter Bracket
Rubber Cap A
Grommet, Fuel Tank
Washer Tank Buffer
Flange Bolt M6×20
Fuel Gauge Assy.
Screw M5×10
Fuel Gauge Display
Fuel Tank Assy.
Fuel Filter, Wire Mesh
Fuel Cap
Tank Fitting With Filter
Clamp Ø8×6
Hose,fuel 1
Hose,fuel 2
Carbon Canister Shield
Carbon Canister Bracket
Carbon Canister
Carbon Canister Holder
Vapor Hose 1
Vapor Hose 2
Axle Pin
Wheel
Cotter Pin
Plastic Front Cover
Frame
Nut M8
Flange Bolt M8×35
Wing Nut M6
Battery Pressing Bracket
1
1
5
1
1
1
1
1
1
1
1
1
2
1
2
1
1
3
4
8
4
2
2
2
1
1
5
4
1
19
1
2
1
1
1
2
2
2
1
1
1
4
1
1
4
4
4
1
2
1
1
1
1
1
7
1
1
1
1
1
1
1
1
2
2
2
1
1
8
2
2
1
FIRMAN 439cc Dual Fuel Engine
NO.Part Number
Qty.
Description
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
357713552
357713553
357713554
336713593
357713569
336713578
357713555
357713556
336713842
336713693
357713531
357713532
357713533
357713585
336713559
357713538
336713557
336713561
336713514
336713516
336713601
336713817
336713819
336713820
336713821
336713822
336713824
336713823
336713826
336713816
336713815
336713827
336713828
357713586
336713573
357713541
380713512
380713515
336713830
336713569
330713582
357713587
336713568
357713588
357713589
336713585
336713565
336713818
336713583
357713590
357713545
357713546
357713548
357713591
336713835
357713598
336713643
330713502
336713841
336713611
357413508
357413509
357413510
357413503
357413506
336713590
336713844
357713596
357713597
357713607
336713834
336713691
Rubber Pad
Battery
Battery Holder
Flange. Bolt M8×45
Screw&washer Assy M5×10
Nut M5
Bolt, Bend Hook
Battery Red Cable +
Black Boot
Battery cable(Female 180mm)
Nut M10
Isolator 2
Isolator 1
Motor Mount
Flange Bolt M8×16
Support Leg
Rubber, Support
Flange Bolt M6×25
Ground Wire
External Star Washer Ø6
Receptacle L14-30R
Control Module
Tapping Screw St2.9×19
Tapping Screw St2.9×32
Micro Switch 1
Micro Switch 2
Fuel Valve
Main Regulator Assy.
LPG Inlet Cover
Screw M4×12
Fuel Selector Switch
Electric Start Switch
Indicator Light
Multi Meter
Outlet Cover L5-30R
Outlet Cover 5-20R GFCI
Bolt M6×22
Nut M6
Tapping Screw St4.2×20
Screw&washer Assy M4×8
Screw&washer Assy M4×14
Control Panel
Nut M4
5-20R Duplex GFCI
Circuit Breaker 24 Amp
Circuit Breaker 20 Amp
Screw M5×14
Charger
Receptacle L5-30R
Control Box
Grommet
Sleeve
Grommet
LPG Hose
Metal Clamp (ø8-ø14)×b8
Waterproof Cover
VF Protection Module
Screw M5×20
Red Boot
Boot,Starter
Control Panel Assy.
Wheel Kit
Rotor And Stator Set
Spark Arrestor Kit
Support Leg Assembly
Cotter Pin,Handle
Washer Ø8
Axle Pin, Handle
Handle
Battery cable(Male 180mm)
Regulator/Hose Assy.
Hose Holder
1
1
1
2
2
3
2
1
1
1
2
1
1
2
4
1
2
4
1
1
1
1
2
1
1
2
1
1
1
1
1
1
1
1
2
2
1
2
2
8
6
1
8
2
2
2
4
1
1
1
1
1
1
1
2
2
1
1
1
1
1
1
1
1
1
2
2
2
1
1
1
1

FIRMAN 439cc Dual Fuel Engine Parts List
Page 36
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
NO.
Part Number
Description
Qty.
English Customer Service: 1-844-FIRMAN1
380723518
357723501
357723502
357723503
357723504
357723505
336723501
357723506
357723507
357723508
380723501
357723510
357723511
357723512
357723513
357723514
357723515
357723516
357723517
357723518
357723519
380723502
336723503
357723521
380723503
380723504
380723505
357723525
357723526
357723527
357723528
357723529
357723530
357723531
336723528
336723529
357723532
336723556
357723533
357723534
357723535
336723537
357723536
357723537
357723538
380723506
380723507
380723508
357723542
357723543
357723544
380723509
357723546
357723547
357723548
357723549
357723550
357723551
NO.
Part Number
Description
Qty.
380723515
357723554
357723555
336723555
357723556
357723557
380723516
357723559
357723560
357723561
357723562
357723563
357723564
336723567
357723565
357723566
336723564
357723567
357723568
357723569
336723606
357723570
357723571
357723572
336723612
380723511
380723519
357723575
380723512
357723577
357723578
357723579
357723580
357723581
357723582
336723589
336723590
336723591
336723592
336723593
330723528
357723584
336723597
357723585
336723595
357723586
357713520
357423500
357423501
357423508
357423509
380423501
380423502
336723615
1
2
2
1
2
2
2
2
1
1
1
1
1
1
1
1
2
7
1
2
1
1
8
1
1
1
1
1
1
1
2
1
4
1
2
2
2
1
1
1
2
2
2
2
1
1
1
1
2
2
2
1
1
1
2
1
1
1
1
1
1
3
1
6
1
1
1
1
1
1
1
1
1
1
1
1
1
2
2
1
1
1
1
1
1
2
1
1
3
1
1
1
1
2
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
Crankcase Comp.
Bolt,drain
Washer,drain Bolt
Oil Level Sensor
Flg. Bolt M6×15
Bearing
Locating Pins
Bearing
Balance Shaft
Camshaft Comp
Crankshaft
Gear,Crank Shaft
Gear,Drive
Gskt.,Crankcase Cover
Oil Dipstick Assy
Cover,Crankcase
Oil Seal
Flange Bolt M8×40
Conn, Rod Comp
Piston Pin Retainer Ring
Wrist Pin
Piston
Flange. Bolt M6×12
Air Guide Lower
Ring, Oil
Ring, Second Piston
Ring, First Piston
Gasket, Valve Cover
Valve Cover Assy
Bolt
Exhaust Valves Stud Bolt
Breather Tube
Flg. Bolt M10×80
Rotator, Exhaust Valve
Locknut
Adjusting Nut, Valve
Valve Rocker
Spark Plug
Retainer, Intake Valve
Retainer, Exhaust Valve
Spring,Valve
Bolt, Rocker Arm
Oil Seal, Valve
Retainer, Valve
Guide Plate, Push Rod
Cylinder Head
Valve,Intake
Valve, Exhaust
Push Rod
Lifter, Valve
Locating Pins
Gasket,cyl.head
Air Cleaner Holder
Nut M6
Air Intake Stud Bolt
Gskt.,Insulator
Insulator, Carburetor
Gskt.,Carburetor
Carburetor
Gskt., Air Cleaner
Elbow, Air Cleaner
Nut M6
Clapboard
Nut M5
Element, Air Cleaner
Cover, Air Cleaner
Wind Guide, Top
Spring, Governor
Spring, Throttle Return
Rod, Governor
Arm, Governor
Bolt, Governor Arm
Pin, Shaft
Oil Seal
Rocker Shim
Shaft, Governor Arm
Ignition Coil
Flange Bolt M6×29
Wire Clip
Fan Cover Comp
Nut, Shaft
Pulley, Starter
Sheath, Wire
Cooling Fan
Flywheel Comp
Flange Bolt M8×35
Starter Motor Assembly
Grip, Starter
Flange Bolt M6×8
Case Comp.,recoil Starter
Spring,starter Return
Cord
Pulley,recoil Starter
Spring,patchet
Patchet,starter
Pawl Guide
Clip Sprg.,pawl Guide
Screw,pawl Guide
Wire Clip
Bushing, Govorner Gear
Clip, Govorner Gear
Gear, Governor
Inner Washer,gear
Gov., Gear Shaft
Gskt., Ext.
Recoil Starter Set
Governing Gear Set
Air Cleaner Set
Carburetor Set
Piston Rings Set
Gasket Set
Lock Washer
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
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85
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90
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Page 37
WARRANTY
FIRMAN Three (3) Year Limited Warranty
Do Not Return the Unit to the Place
of Purchase
Contact the FIRMAN Service Center 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 authoriz
-ation, or at an unauthorized repair facility, will
not be covered by this warranty.
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.
English Customer Service: 1-844-FIRMAN1
SERVICE INFORMATION
CONTACT THE
FIRMAN
PRODUCT SERVICE
DEPARTMENT AT
1-844-347-6261
or at
www.firmanpowerequipment.com
to obtain warranty service
information or to order
replacement parts or
accessories.
HOW TO ORDER REPLACEMENT PARTS
1. Model No. ,Rev. Level and Serial No. and all
specifications shown on the Model No./Serial
No. plate.
2. Parts number or numbers as shown in the
Parts List section.
3. A brief description of the trouble with the
generator.
REGISTER YOUR PRODUCT
Register your Firman generator online
at www.firmanpowerequipment.com

Page 38
English Customer Service: 1-844-FIRMAN1
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, modified,
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.
Contact Information
You may contact FIRMAN at:
Address
Firman Power Equipment Inc.
Attn: Customer Service
8716 West Ludlow Dr. Suite #6
www.firmanpowerequipment.com
Peoria, AZ 85381
We are FIRMAN POWER - And we are here for you.
Customer Service Desk - 1-844-347-6261(1-844-FIRMAN1)
6am PST(9am EST) until 8pm EST(5pm PST)
Technical Service Desk - 1-844-347-6261(1-844-FIRMAN1)
6am PST(9am EST) until 8pm EST(5pm PST)
24/7 Tech Support - 1-844-347-6261(1-844-FIRMAN1)

Page 39
English Customer Service: 1-844-FIRMAN1
CALIFORNIA AND FEDERAL EXHAUST AND EVAPORATIVE EMISSIONS CONTROL WARRANTY STATEMENT
YOUR WARRANTY RIGHTS AND OBLIGATIONS
FIRMAN POWER EQUIPMENT INC.
Emission Control System Warranty
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.
The 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 warranty
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 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 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 other 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 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.
small off-road engine and engine powered equipment
The California Air Resources Board, US Environmental Protection Agency (“US EPA”) and FIRMAN POWER EQUIPMENT
INC.(FIRMAN) are pleased to explain the emissions control systems warranty on your 2019-2020 or later Small Off-Road
Engine (“SORE”) and engine powered equipment. In California, new equipment that use small off-road engines must be
designed, built and equipped to meet the State’s stringent anti-smog standards. FIRMAN must warrant the emissions control
systems on your SORE and engine powered equipment for the periods of time listed below provided there has been no abuse,
neglect or improper maintenance of your small off-road engine or equipment leading to the failure of the emissions 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 condition exists, FIRMAN will repair your SORE and engine powered equipment at no cost to you
including diagnosis, parts and labor.
OWNER'S WARRANTY RESPONSIBILITIES:
As the 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 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.
SORE and engine powered equipment
As the 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.
SORE and engine powered equipment
You are responsible for presenting your 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.
small off-road engine and engine powered equipment
If you have any questions regarding your warranty rights and responsibilities, you should contact
or
FIRMAN at 1-844-347-6261
support@firmanpowerequipment.com.
FIRMAN Emission Control Defects Warranty Provisions

Page 40
English Customer Service: 1-844-FIRMAN1
PARTS COVERED BY WARRANTY
Limitations
Listed below are the parts (if equipped) covered by the Federal and California Emission Control System 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 manifold
- 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
FIRMAN POWER EQUIPMENT INC.
Email: support@firmanpowerequipment.com
www.firmanpowerequipment.com
(8) Throughout the emissions warranty period defined in Subsection (b)(2), FIRMAN will 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 the manufacturer.
(10) Add-on or modified parts that are not exempted by the Air Resources Board may not be used. The use of any non-exempted
add-on or modified parts by the ultimate purchaser will be grounds for disallowing a warranty claim.
The manufacturer will not be liable to warrant failures of warranted parts caused by the use of a non-exempted add-on or modified
part.

P/N:357745481 Rev 0 5
Firman Power Equipment Inc.
Peoria, AZ 85381
www.firmanpowerequipment.com
8716 West Ludlow Dr. Suite #6
