Firman R-W01781 User manual

P/N:317745450 Rev:04
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.
OWNER’S MANUAL
PORTABLE INVERTER GENERATOR
REMANUFACTURED
MODEL NUMBER
R-W01781
ARC LP NO:
Purchase Date:

Table of Contents
. . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Safety Precautions . . . . . . . . . . . . . . . . . . . . .2
Unpacking The Generator. . . . . . . . . . . . . . .6
Parts Included. . . . . . . . . . . . . . . . . . . . . .6
Controls and Features. . . . . . . . . . . . . . . . . 7
Generator. . . . . . . . . . . . .. . . . . . . . . . . . . .7
Control Panel. . . . . . . . . . . . . . . . . . . . . . . 8
Specifications. . . . . . . . . . . . . . . . . . . . . . . . . 9
Add Engine Oil . . . . . . .. . . . . . . . . . . . . . . .10
Low Oil Shutdown . . . . . . . . . . . . . . . . . . . .10
Add Fuel . . . . . . .. . . . . . . . . . . . . . . . . . . . .10
Grounding. . . . .. . . . . . . . . . . . . . . .. . . . . .11
System.. . . . . . . . . . . . . . . . . . . . . . .. . . . . .12
Operation . . . . . . . . . . . . . . . . . . . . . . . . .. . . . 12
Generator Location . . . . . . . . . . . . . . . . . . 12
Surge Protection . . . . . . . . . . . . .. . . . . . . .13
Starting the Generator. . . . . . . . . .. . . . . . 13
Connecting Electrical Loads . . . . . . . .. . . 14
Economy Control Switch. . . . . . . .. . . . . . 15
12V DC Outlet (Battery Charger).. . . . . . 15
Stopping the Engine . . . . . . . . . . . . . . . . . 16
Low Oil Shutdown . . . . . . . . . . . . . . . . . . 17
Do Not Overload Generator . . . . . . . . . . . 17
Parallel Operation. . . . . . . . . . . . . . . . . . . 1 7
Maintenance And Storage. . . . . . . . . . . . . . 18
Maintenance Schedule . . . . . . . . . . . . . 18
Engine Maintenance .. . . . . . . . . . . .. . . . 19
Change Engine Oil . . .. . . . . . . . . . . . . . 19
Air Filter Maintenance. . . . . . . . . . . . . .19
Spark Plug Maintenance. . . . . . . . . . . . 20
Cleaning Fuel Strainer . . . . . . . . . . . . 20
. . . 20
Generator Maintenance . . . . . . . . . . . . . . 21
Service and Storage . . . . . . . . . . . . . . . .. 22
Introduction
Inspect Muffler and Spark Arrester
. . . . . . . . . . . . . . . . . . . . .23
Parts Diagram and Parts List . . . . . . . . . . 24
Generator Parts Diagram . . . . . . . . . . . . 24
Engine Parts Diagram . . . . . . . . . .. . . . . 25
Parts List . . . . . . . . . . . . . . . . . . . . . . . . . 26
Service Information . . . . . . . . . . . . . .. . . . . 28
Warranty. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Trouble Shooting
Connecting to a Building’s Electrical
English Support: [email protected]

Page 01
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
Thank you for purchasing a REMANUFACTURED FIRMAN generator. This is a used item that has been
professionally restored to working order by a manufacturer or 3rd party vendor. This means the product will show signs of use, (such as
scratches, scuffs or dings) but has been inspected and repaired to meet manufacturer specifications and is in the original working
condition. This item may or may not be in the original packaging.
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.
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.
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.
English

SAFETY PRECAUTIONS
Page 02
WARNING
POISONOUS GAS HAZARD.
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 this product ONLY outside far away
from windows, doors and vents to reduce
the risk of carbon monoxide gas from
accumulating and potentially being drawn
towards occupied spaces.
•
•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 product inside homes,
garages, basements, crawlspaces, sheds, or
other partially-enclosed spaces even if using
fans or opening doors and windows for
ventilation. Carbon monoxide can quickly
build up in these spaces and can linger for
hours, even after this product has shut off.
•ALWAYS place this product downwind and
point the engine exhaust away from
occupied spaces. If you start to feel sick,
dizzy, or weak while using this product, shut
it off and get to fresh air RIGHT AWAY. See a
doctor. You may have carbon monoxide
poisoning.
Avoid other generator hazards.
READ MANUAL BEFORE USE.
WARNING
The engine exhaust from this product contains
chemicals known to the State of California to
cause cancer, birth defects, or other reproductive
harm.
WARNING
Certain components in this product and related
accessories contain chemicals known to the
State of California to cause cancer, birth defects
or other reproductive harm. Wash hands after
handling.
•If you start to feel sick, dizzy or weak
while using the portable generator, you
may have carbon monoxide poisoning.
Get out side to fresh air immediately and
call 911 for emergency medical attention.
Very high levels of CO can rapidly cause
victims to lose consciousness before they
can rescue themselves. DO NOT attempt to
shut off the generator before moving to
fresh air. Entering an enclosed space where
a generator is or has been running may put
you at greater risk of CO poisoning.
English

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

Page 04
WHEN OPERATING EQUIPMENT
DO NOT operate this product inside any
building, carport, porch, mobile equipment,
marine applications, or enclosure.
•
DO NOT tip engine or equipment at angle
which causes fuel 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 shutoff valve OFF.
•
•DO NOT tip engine or equipment at angle
which causes fuel to spill.
Disconnect spark plug wire.
•
WHEN STORING FUEL OR EQUIPMENT
WITH FUEL IN TANK
•Store away from furnaces, stoves, water
heaters, clothes dryers, or other appliances
that have pilot light or other ignition source
because they could ignite fuel vapors.
WARNING
This generator does not meet U. S. Coast
Guard Regulation 33CFR-183 and should not
be used on marine applications.
•
•Failure to use the appropriate U. S. Coast
Guard approved generator could result in
death or serious injury and/or property
damage.
WARNING
Generator voltage could cause
electrical shock or burn resulting
in death or serious injury.
•
WARNING
Starter cord kickback (rapid
retraction) will pull hand and arm
toward engine faster than you can
let go which could cause broken
bones, fractures, bruises, or
sprains resulting in serious injury.
When starting engine, pull cord slowly until
resistance is felt and then pull rapidly to
avoid kickback.
•
•NEVER start or stop engine with electrical
devices plugged in and turned on.
WARNING
Fuel and its vapors 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 FUEL
Turn generator engine OFF and let it cool at
least 2 minutes before removing fuel cap.
Loosen cap slowly to relieve pressure in tank.
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

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
Starter and other rotating parts
could entangle hands, hair,
c l o t hi n g , o r a c c e s s o r i e s
resulting in serious injury.
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.
•
•
•
Excessively high operating speeds could result
in minor injury. Excessively low operating speeds
impose a heavy load.
DO NOT tamper with governor spring, links or
other parts to increase engine speed.
Generator supplies correct rated frequency
and voltage when running at governed speed.
DO NOT modify generator in any way.
•
•
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.
•
•
•
English

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.
UNPACKING THE GENERATOR
Open carton and Remove packaging materials.
Remove generator, any included
accessories, and literature from carton. If any
items are damaged, contact our product
service department at [email protected].
•
•
Parts Included
Your remanufactured gasoline powered inverter
generator may ship with the following parts:
English Support: [email protected]
1. Engine Oil(Bottle) . . . . . . . . . . . . . . . . . . . . . . . 1
2. Oil Funnel . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . 1
3. Wrench for Spark Plug . . . . . . . . . . . . . . . . . . . .1
4. Screwdriver. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
5. Battery Charger Cable (2 m). . . . . . . . . . . . . . . 1
6. Manual. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
7. Quick Reference Guide . . . . . . . . . . . . . . . . . . . 1
2
1
Quick
Reference
Guide
3
Manual
7
4
6
5
PLEASE NOTE
REMANUFACTURED GENERATORS DO NOT
SHIP WITH ALL ORIGINAL ACCESSORIES.
IN ALL CASES YOU SHOULD HAVE OIL AND
TOOLS AVAILABLE TO SET-UP YOUR
GENERATOR.

Page 07
CONTROLS AND FEATURES
Generator
*We are always working to improve our products. Therefore, the enclosed product may differ
slightly from the image on this page.
1
1-
2- Fuel Lever Vent – Turn this valve to the “On” position to supply air to the tank.
3- Fuel Cap
4- Control Panel
5- Recoil Starter
6- Muffler/Spark Arrester
7- Spark Plug Access Cover
8- Maintenance Cover – Oil filler and air filter access.
9- Choke Knob
10- Engine ON/OFF Switch
11- Economy Control Switch
Carrying Handle
English
①②③
④⑤
⑥
⑦
⑧
⑨
⑩
⑪

Page 08
Control Panel
Engine Switch – Flip the switch to the “ON”
position and pull the recoil starter to start
the generator. Turn to the “OFF” position to
turn off the generator.
1
2
3
4
6
Ground Terminal – Consult an electrician for local
grounding regulations.
120V, 20A Duplex – (NEMA 5-20R) 20 Amp of current
may be drawn from this 120 Volt receptacle.
Total power drawn from all receptacles must not exceed the name plate rating.
NOTE:
Outlet Cover - Protect the receptacles from dust
and debris.
English
1
3
2
4
56
7
8
9
10
11
12
13
14
12V DC outlet – 5 Amp 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.
Parallel Operation Outlets - These outlets are used
for connecting two FIRMAN inverter generators for
parallel operation. A FIRMAN parallel kit(optional
equipment) is required for parallel operation.
DC Circuit Breaker - The circuit protector may be reset
by pushing the button of the protector.
5
7
Oil Warning Indicator Light – Check oil level when
this light turns “ON”. Engine will not run when
indicator is lit.
8Overload Indicator Light – This light turns “ON”
when the generator is overloaded and will cut
power to the receptacles.
9
Output Ready Indicator Light – Remains “ON”
during normal operating conditions. Shuts “OFF”
when generator is overloaded.
10
11
Choke Knob
Economy Control Switch
12
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 off, the engine
runs at normal speed continuously.
13
14 Fuel Valve Knob
5V USB Outlet
15
15 Recoil Stater
When the oil falls below the minimum level, the oil
warning indicator light comes on and the engine
stops automatically. The engine will not start until
the proper amount of oil is in the crank case.
The green AC Power Indicator Light comes on
when the engine starts and generates power.
If the engine overload indicator light comes on, the
generator’s wattage / amperage capacity has been
exceeded by connected electrical devices or by a
power surge. When this occurs, the green AC Power
Indicator Light(Item 7) will go off. The engine will
continue to run, but the red Engine Overload Indicator
Light will stay on and power will no longer be supplied
to connected electronic devices.

Page 09
SPECIFICATIONS
AN IMPORTANT MESSAGE ABOUT TEMPERATURE:
Your Firman Power Equipment product is designed and rated for continuous operation at
ambient temperatures up to 40°C (104°F). When your product is needed, your product may be
operated at temperatures ranging from -15°C (5°F) to 50°C (122°F) for short periods. If the
product is exposed to temperatures outside this range during storage, it should be brought back
within this range before operation. In any event, the product must always be operated outdoors,
in a well-ventilated area and away from doors, windows and other vents.
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.
•
•
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
120V
W01781
1700
Digital
Single Phase
1
Single Cylinder, 4-Stroke OHV Air Cooled
80 cc
Breakless Ignition Type, Flywheel Magneto
Unleaded Automotive Gasoline
Recoil
0.9 Gallon
12.9 oz(0.38L)
Counter Clockwise (Facing P.T.O.)
Float
Polyurethane Type
YES
2100
FIRMAN
Rated Fequency 60Hz
Oil Type
See “Add Engine Oil” Section
English
Magneto Inductor

Add Engine Oil
Page 10
DO NOT attempt to crank or start the engine
before it has been properly filled with the
recommended type and amount of oil. Damage
to the generator as a result of failure to follow
these instructions will void your warranty.
1.Place generator on a flat and level surface.
2.Loosen the cover screw and remove the
maintenance cover.
NOTE:
The recommended oil type is 10W-30 automotive
oil. However outdoor temperatures will determine
the space proper oil viscosity for the engine. Use the
chart to select the best for the outdoor temperature
range expected.
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.
5.Replace oil fill cap/dipstick and fully tighten.
6.Reinstall maintenance cover and tighten screws.
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
English
3.Remove oil fill cap/dipstick .
7.Oil Level should be checked prior to each use or
at least 8 hours or operation. Keep oil level maintained.
DRAIN PLUG
HIGH
H
H
L

Add Fuel
Page 11
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.
WHEN ADDING FUEL
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 top of fuel screen. This
will all expansion in hot weather and
prevent overflow.
•
•
•
English
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
A ground terminal connected to the frame of
the generator has been provided on the control
panel. For remote grounding, connect of a
length of heavy gauge (12 AWG minimum)
copper wire between the generator ground
terminal and a copper rod driven into the
ground. We strongly recommend that you
consult with a qualified electrician to ensure
compliance with local electrical codes.
THERE IS A PERMANENT CONDUCTOR BETWEEN
THE GENERATOR (STATOR WINDING) AND THE
FRAME.

Page 12
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
Connections for standby power to a building's
electrical system must be made by a qualified
electrician. The connection must isolate the
generator power from utility power or other
alternative power sources and must comply
with all applicable laws and electrical codes.
WARNING
Generator voltage could cause
electrical shock or burn resulting
in death or serious injury.
•
•
•
•
•
•
•
•
English
OPERATION
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
WARNING
POISONOUS GAS HAZARD.
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.
Avoid other generator hazards.
READ MANUAL BEFORE USE.
Do not block generator air vents with paper or
other material.
CAUTION
Tilting can cause fuel spillage.

Page 13
Surge Protection
Voltage fluctuation may impair the proper
functioning of sensitive electronic equipment.
Electronic devices, including computers and
many programmable appliances use components
that are designed to operate within a narrow
voltage range and may be affected by momentary
voltage fluctuations. While there is no way to
prevent voltage fluctuations, you can take steps
to protect sensitive electronic equipment.
Install UL1449, CSA-listed, plug-in surge
suppressors on the outlets feeding your
sensitive equipment. Surge suppressors come
in single- or multi-outlet styles. They’re
de s i g n e d to p ro t ec t ag a in s t v ir t ua l ly
all short-duration voltage fluctuations.
Operate this product ONLY outside far away
from windows, doors and vents to reduce
the risk of carbon monoxide gas from
accumulating and potentially being drawn
towards occupied spaces.
•
•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 product inside homes,
garages, basements, crawlspaces, sheds, or
other partially-enclosed spaces even if using
fans or opening doors and windows for
ventilation. Carbon monoxide can quickly
build up in these spaces and can linger for
hours, even after this product has shut off.
•ALWAYS place this product downwind and
point the engine exhaust away from
occupied spaces. If you start to feel sick,
dizzy, or weak while using this product, shut
it off and get to fresh air RIGHT AWAY. See a
doctor. You may have carbon monoxide
poisoning.
CAUTION
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Starting the Generator
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.
3. 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 cap vent lever to the “O”(l) position.N
5. Turn the fuel valve to the “ON”(l) position.

Page 14
If engine starts after 3 pulls but fails to run, or if
unit shuts down during operation, make sure
unit is on a level surface and check for proper
oil level in crankcase. This unit may be equipped
with a low oil protection device. If so, oil must
be at proper level for engine to start.
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.
9. Do not over-choke. As soon as engine starts
and warm up, push the choke lever in to the
“RUN” position.
10. Allow generator to run at no load for few
minutes upon each initial start-up to permit
engine and generator to stablize.
Starter cord kickback(rapid
retraction) will pull hand and arm
toward engine faster than you can
let go which could cause broken
WARNING
When starting engine, pull cord slowly until
resistance is felt and then pull rapidly to avoid
kickback.
8. Pull the starter cord slowly until resistance is
felt and then pull rapidly.
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6. Pull the choke lever out to the “START” position.
7. Flip the engine switch to the “ON”(l) position.
bones, fractures, bruises, or sprains resulting in
serious injury.
Connecting Electrical Loads
1.Let engine stabilize and warm up for a few
minutes after starting.
2.Ensure circuit breaker on control panel is in
on position.
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.
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).
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.

Page 15
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.
English
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
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 off, the
engine runs at normal speed continuously.
WARNING
For periods of high electrical load or momentary
fluctuations, the Economy Control Switch should
be turned OFF.
12V DC Outlet (Battery Charger)
The 12V DC outlet is ONLY to be used with the
supplied 12V battery charging cable. The DC
output is unregulated and will damage other
12V DC products.
CAUTION
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.
Storage batteries give off EXPLOSIVE hydrogen
gas while charging. Do not allow smoking, open
flames, sparks, or spark producing equipment
in the area while charging.
WARNING
Battery electrolyte fluid is comprised of sulfuric
acid that can be very dangerous and cause severe
burns. Do not allow this fluid to contact eyes, skin,
clothing, etc. If contact or spillage does occur,
flush the area with water immediately.
WARNING
Do not continue to charge a battery that becomes
hot or is fully charged.
The amount of current flowing will depend on the
charging voltage and battery's state of charge. As
the battery becomes more fully charged, the output
current to the battery decreases and nearly becomes
constant. Taper chargers are intended to be used
with the provision that they will be disconnected
from the battery after a maximum time on charge.
Normally a period of 30 to 120 minutes is sufficient
to recharge a weak battery. The charge level of the
battery should be checked periodically.
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.

Page 16
English
A DC circuit protector has been provided to
protect the circuit from overloads. If an overload
occurs, the circuit protector will trip. The circuit
protector may be reset by pushing the button of
the protector.
DC CIRCUIT PROTECTOR
Charging a large capacity battery or a totally
discharged battery may cause the DC breaker to
turn off. In these cases, a separate battery charger
unit connected to an AC power source is
recommended instead of the DC receptacle on
the generator.
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.
NOTE:
When the battery circuit is in use the AC capacity
is reduced by 60 watts. Make sure the combined
load is within the rated limits.
WARNING
Do not continue to charge a battery that becomes
hot or is fully charged.
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. Press the engine switch to the “OFF”(O) position.
WARNING
If a cover is used, do not install until unit has cooled.
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.
3. Turn the fuel valve to the “OFF”(O) position.
Do not leave the generator until it has
completely stopped.
4. Turn the fuel cap vent lever to the “O”(O) position.FF
DO NOT stop engine by moving choke control
to “START” position.
Important: Always ensure that the Fuel Valve
and the Engine Switch are in the “OFF” position
when the engine is not in use.
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.

Page 17
English
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 the LOW and HIGH 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.
Overload Operation
The overload indicator light will turn on when
the load exceeds 1764W(approximately). If the
load exceeds 1860W(approximately), the light
will blink and cut power to the receptacles in 30
seconds.
Parallel Operation
Two FIRMAN model W01781 generators can be
operated in parallel to increase the total available
electrical power to 3100 watts. A FIRMAN parallel
kit (optional equipment) is required for parallel
operation. For kit availability, call Customer Service
at 1-844-347-6261 or visit:www.firmangenerators.com.
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. Disconnect any electronic devices, and then
stop the engine.
2. Reduce the total wattage of connected
electronic 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.
How to Correct

MAINTENANCE AND STORAGE
MAINTENANCE SCHEDULE
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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 Filter
Fuel Line
Exhaust
System
Carburetor
Starting
System
Check condition. Adjust gap
and clean. Replace if necessary.
Check oil level.
Clean, replace if necessary.
Clean fuel filter and fuel tank
strainer. Replace if necessary.
Check for leakage. Retighten or
replace gasket if necessary.
Check choke operation.
Check recoil starter operation.
Check. Replace if necessary.
Check fuel hose for cracks or other
damage. Replace if necessary.
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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 filter. New
spark plugs and clean air filter assure proper fuel-air mixture and help your engine run better
and last longer.
Replace.
Check spark arrester screen.
Clean/Replace if necessary.
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