Firman W03386 User manual

P/N:333747006 Rev:00
OPERATOR’S MANUAL
PORTABLE INVERTER GENERATOR
Record product information to reference when ordering parts or
obtaining warranty coverage.
MODEL NUMBER
W03386
Rev Level:00

1. This device complies with Part 15 of the FCC Rules. Operation is subject to the following two
conditions:
1a. This device may not cause harmful interference.
1b. This device must accept any interference received, including interference that may cause
undesired operation.
2. Changes or modifications not expressly approved by the party responsible for compliance
could void the user’s authority to operate the equipment.
NOTE: The FIRMAN W03386 inverter generator has been tested and found to comply with the
limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed
to provide reasonable protection against harmful interference in a residential installation. This
equipment generates, uses and can radiate radio frequency energy and, if not installed and used
in accordance with the instructions, may cause harmful interference to radio communications.
However, there is no guarantee that interference will not occur in a particular installation. If this
equipment does cause harmful interference to radio or television reception, which can be
determined by turning the equipment off and on, the user is encouraged to try to correct the
interference by one or more of the following measures:
Supplier’s Declaration of Conformity
47 CFR § 2.1077 Compliance Information
FIRMAN W03386 INVERTER GENERATOR
Firman Power Equipment
8716 W. Ludlow Dr. Suite #6
Peoria, AZ 85381
Telephone: [phone]
www.firmanpowerequipment.com
Reorient or relocate the receiving antenna.
Increase the separation between the equipment and receiver.
Connect the equipment into an outlet on a circuit different from that to which the receiver is
connected.
Consult the dealer or an experienced radio/TV technician for help.
Changes or modifications to equipment not expressly approved by FIRMAN could void the user’s
authority to operate the equipment.
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FCC/IC Compliance Statement

Table of Contents
Introduction . . . . . . . . . . . .
Features and Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 05
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Maintenance - Storage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 3
Troubleshooting- Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Parts Diagrams - Parts Lists - Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Service - Warranty. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .01
REGISTER YOUR PRODUCT
Register your FIRMAN generator online at www.firmanpowerequipment.com
INTRODUCTION
Thank you for purchasing a FIRMAN generator. You have selected a high-quality, precision engineered
generator set designed and tested to give you years of satisfactory service. This generator is designed
to run only on unleaded gasoline. This generator is not intended to be run unattended or to supply
power to life safety support.
This manual contains safety information to make you aware of the hazards and risks associated
with generator products and how to avoid them. This generator is designed and intended only
for supplying electrical power for operating compatible electrical lighting, appliances, tools and
motor loads, and is not intended for any other purpose. It is important that you read and
understand these instructions thoroughly before attempting to start or operate this inverter
generator. Save these original instructions for future reference.
All information in this publication is based on the latest production information available at the
time of approval for printing. The manufacturer reserves the right to change, alter or otherwise
improve the generator and this documentation at any time without prior notice.
INTRODUCTION
01
English Customer Service: 1-844-FIRMAN1

02
SIGNAL WORDS
DANGER WARNING CAUTION
Indicates a hazard
which, if not avoided,
will result in death or
serious injury.
Indicates a hazard
which, if not avoided,
could result in death
or serious injury.
Indicates a hazard
which, if not avoided,
could result in minor or
moderate injury.
Toxic Fumes- Engine exhaust contains carbon monoxide, a
poisonous gas that will kill you in minutes. You cannot smell
it or see it.
Fire- Fuel and its vapors are extremely flammable which could
cause burns or fire resulting in death or serious injury.Engine
exhaust could cause fire resulting in death or serious injury.
Hot Surface- Muffler could cause burns resulting in serious injury.
Generator could cause electrical shock resulting in death or serious
injury.
Safety Alert Symbol- Indicates a potential personal injury hazard.
Operator's Manual- Failure to follow warnings, instructions and
operator's manual could result in death or serious injury.
English Customer Service: 1-844-FIRMAN1
NOTICE
Indicates information
considered Important,
but not hazard-related.
INTRODUCTION

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WARNING! This product can expose you to chemicals including gasoline engine
exhaust, which is known to the State of California to cause cancer, and carbon
monoxide, which is known to the State of California to cause birth defects or other
reproductive harm. For more information go to www.P65Warnings.ca.gov.
This outdoor generator can be used to power outdoor items using extension cords .
NOTICE If you have questions about intended use, contact customer service. This inverter
generator is designed to be used only with FIRMAN authorized parts.
FIRMAN
There may be Federal or State regulations, local codes, or ordinances that apply to the intended
use of the generator. Consult a qualified electrician, electrical inspector, or the local agency
having jurisdiction. This generator is not intended to be used at a construction site or similar
activity as defined by NFPA 70-2020 (NEC) section 590.6.
Compliance Requirements
To Restore Power Using Extension Cords
03
INTRODUCTION
The generator neutral is floating, which means that the AC stator winding is isolated from the
grounding fastener and the AC receptacle ground pins. On a floating neutral generator the AC
receptacle ground pins are not functional. Electrical devices, such as a ground fault circuit
interrupter (GFCI), requiring a functioning AC receptacle ground pin will not operate.
System Ground

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2. Follow cord safety instructions.
3. Install carbon monoxide alarm(s).
4. When operating portable generator with extension cords, make sure portable generator is located
in an open, outdoor area, at least 20 ft. (6 m) from occupied spaces with exhaust pointed away.
5. Extension cords running directly into your home, powering indoor items IS NOT RECOMMENDED.
Extension cords running directly into the home increase your risk of carbon monoxide
poisoning through any openings.
If an extension cord running directly into your home is used to power indoor items, the
operator recognizes that this increases the risk of CO poisoning to people inside the home
and assumes that risk.
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DANGER! Engine exhaust contains carbon monoxide, a poisonous gas that will kill
you in minutes. You cannot smell it, see it, or taste it. Even if you do not smell exhaust
fumes, you could still be exposed to carbon monoxide gas.
04
INTRODUCTION
1. Only use grounded cords marked for outdoor use rated for your loads.
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To provide power using
extension cords
Total
Amperage
Minimum Gauge, Outdoor Rated
Up to 50 FT (15m)
Up to 13A
Up to 15A
Up to 20A
Up to 30A

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*We are always working to improve our products. Therefore, the enclosed product
may differ slightly from the image on this page.
05
FEATURES AND CONTROLS
⑨
1- Fixed
2- Fuel Cap
3- Recoil Starter
4- Never Flat Wheel
5- Control Panel
6- Muffler/Spark Arrester
7- Folding Handle
8- Maintenance Cover – Oil filler and air filter access.
Carrying Handle
9- Data Decal / Serial Number
②
③
④
⑤
⑥
⑦
⑧
①
①

English Customer Service: 1-844-FIRMAN1
06
FEATURES AND CONTROLS
⑦
①
②
③
④
⑤
⑥

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FEATURES AND CONTROLS

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08
FEATURES AND CONTROLS

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09
FEATURES AND CONTROLS
Control Panel
NOTICE Total power drawn from all receptacles must not exceed the data decal rating.
1. Engine Start Switch – To start engine, press and hold the switch in the START (ll) position, the
engine will crank and attempt to start. When the engine starts, release the switch to the RUN (l) position.
3. 3-1 Data-Minder (Multi-Meter) – Push the SELECT button to show the Voltage, Hertz and running hours.
2. 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.
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8
4. 120V, 20A Duplex - NEMA 5-20R (Not GFCI protected)
A maximum of 20 Amps current may be drawn from this duplex receptacle.
5. 120V, 30A RV – NEMA TT-30R
A maximum of 27.5 Amps current may be drawn from this receptacle.
6. Output Ready Indicator Light – Remains “ON” during normal operating conditions. Shuts “OFF”
when generator is overloaded. The green AC Power Indicator Light comes on when the engine
starts and generates power.
7.Overload Indicator Light – This light turns “ON” when the generator is overloaded and will cut
power to the receptacles. If the engine overload indicator light comes on, the generator’s wattage /
amperage capacity has been exceeded by connected electrical devices or by a power surge. When
this occurs, the green AC Power Indicator Light 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.
8. Oil Warning Indicator Light – Check oil level when this light turns “ON”. Engine will not run when
indicator is lit. When the oil falls below the minimum level, the oil warning indicator light comes
on and the engine stops automatically. The engine will not start until the proper amount of oil is
in the crank case.
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1
3
2
4
5
910
11
12
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10
FEATURES AND CONTROLS
9. Battery Power Restore Switch
10. DC 5V A USB Outlet2.1
11. Circuit Breakers – The receptacles are protected by AC circuit protectors. If the generator is
overloaded or an external short circuit occurs, a circuit protector may trip. If tripping occurs,
disconnect all electrical loads and determine the cause before attempting to continue using the
generator. Reset any tripped circuit protectors.
If multiple receptacles are used at the same time, the total current must be kept with-in the
portable generator data decal rating.
19. Outlet Cover - Protect the receptacles from dust and debris.
22. Recoil Starter
12. 12V DC Battery Charger Port - Plug the 120 Volt AC charger into this port to charge the
generator battery.
13. DC Circuit Breaker – The DC receptacles are protected by an DC circuit protector. If the DC output
is overloaded or an external short circuit occurs the circuit protector will trip.
14. 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.
15. DC 12V Output - 8.3 Amps of DC current may be drawn from this receptacle. Use this outlet to charge
12V automotive type batteries ONLY. See 12V DC outlet (Battery Charger) section.
18. Ground Terminal – Consult an electrician or authority having jurisdiction for local grounding
requirements.
24. CO Alert™ Carbon Monoxide (CO) Shutdown Indicator Light — Indicates the engine shutdown due
to carbon monoxide accumulation around the generator or a CO Alert system fault occurred.
17. Remote Start Indicator light - The light will light or flash depending on the status of the remote
start system.
16. Remote Start Program Button - Use this button along with the remote control to program the
generator to be started remotely.
21. Choke Button
20. Fuel Valve Knob
23. Remote Holder - to hold remote control for easy
access.

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11
1.Location
DANGER! Engine exhaust contains carbon monoxide, a poisonous gas that could kill
you in minutes. You CANNOT smell it, see it, or taste it. Even if you do not smell exhaust
fumes, you could still be exposed to carbon monoxide gas.
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Operate portable generator only outdoors, at least 20 ft.(6 m) from occupied spaces with exhaust
pointed away to reduce the risk of carbon monoxide accumulating.
Install battery-operated carbon monoxide alarms or plug-in carbon monoxide alarms with
battery back-up according to the manufacturer's instructions. Smoke alarms cannot detect
carbon monoxide gas.
Do not run this portable generator inside homes, garages, basements, crawlspaces, sheds, or
other partially-enclosed spaces even if using fans or opening doors and windows for ventilation.
Carbon monoxide can quickly build up in these spaces and can linger for hours, even after this
product has shut off.
•If you start to feel sick, dizzy, weak or your home’s carbon monoxide alarm sounds, get to fresh air
right away. Call emergency services. You may have carbon monoxide poisoning.
Carbon Monoxide Alarm(s)
Install carbon monoxide alarms inside your home. Without working
carbon monoxide alarms, you will not realize you are getting sick and
dying from carbon monoxide poisoning.
Prevent Carbon Monoxide (CO) Poisoning
Use outdoors at least 20 ft. (6 m) from any home.
Point exhaust away from all homes and occupied spaces.
Install CO alarms inside your home.
20 ft. (6 m) min.
To better educate yourself about all carbon monoxide risks,
go to www.takeyourgeneratoroutside.com.
OPERATION

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Reduce Risk of Fire
WARNING! Exhaust heat/gases could ignite combustibles, structures or damage fuel
tank causing a fire, resulting in death or serious injury.
Keep portable generator at least 5 ft. (1.5 m) from any structure, trees or vegetation over 12
in. (30 cm) in height.
•
Select an outdoor site that is dry and protected from the weather. Do not move portable
generator indoors to protect it from the weather.
Do not locate the portable generator under a deck or other similar structure that may
confine heat and airflow.
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12
OPERATION
5 ft.(1.5 m)
min.
5 ft.(1.5 m)
min.
20 ft.(6 m) min.

English Customer Service: 1-844-FIRMAN1
2. Oil and Gasoline
Add Engine Oil
We recommend using FIRMAN SAE 10W-30 API SJ oil for best performance. Other high-quality
detergent oils (API SJ or higher) are acceptable. Do not use special additives. Ambient temperature
determines the proper oil viscosity for the engine. Use the chart to select the proper oil for the
outdoor temperature range expected.
NOTICE Do not attempt to crank or start the engine before it has been properly filled with the
recommended type and amount of oil. Damage due to operation with no oil will void your warranty.
Degrees Celsiusº(Outside)
Full Synthetic 5W-30
Degrees Fahrenheitº(Outside)
5W-30 10W-40
10W-30
1.Place generator on a flat, level surface.
2.Loosen the cover screw and remove the maintenance cover.
3.Clean area around oil fill and remove yellow oil fill cap/dipstick.
4.Wipe dipstick clean.
13
OPERATION
(H)
DRAIN PLUG
(L)
H
L

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5. Using oil funnel, slowly pour contents of provided oil bottle into oil fill opening until oil reaches
upper limit "H" mark on the dipstick. Be careful not to overfill. Overfilling could cause engine
starting problems or engine damage.
6.Replace oil fill cap/dipstick and fully tighten.
8.Oil level should be checked prior to each use or at least every 8 hours of operation. Keep oil
level maintained.
7.Reinstall maintenance cover and tighten screws.
The portable generator is equipped with a low oil shutdown. If the oil level drops below the
minimum required level, a sensor will activate an internal switch stopping the engine. If the
engine shuts off and the oil level is within specifications, check to see if generator is sitting at an
angle. Place portable generator on an even surface to correct this. If engine fails to start, the oil
level may not be high enough to deactivate the internal low oil level switch. Make sure the sump is
completely full of oil to the upper limit (H). Do not operate engine until oil level issue is corrected.
Contact Firman customer service.
Low Oil Shutdown
Add Gasoline
WARNING! Fuel and its vapors are extremely flammable which could cause burns or fire
resulting in death or serious injury.
Turn generator engine OFF and let it cool at least 2 minutes before removing fuel cap.
Do Not refuel or move generator when engine is running.
Move generator outdoors prior to adding or draining fuel
Keep fuel away from any ignition sources.
Do not overfill tank, allow space for fuel expansion.
If any fuel spills, wait until it evaporates before starting engine
Check and replace fuel lines, tank, cap, and fittings prior to each use if any damage or leaks
are found.
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Fuel must meet these requirements:
Clean, fresh, unleaded gasoline with a minimum of 87 octane.
For high altitude use, see Operation at High Altitude.
Gasoline with no more than 10% ethanol is acceptable.
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OPERATION

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NOTICE Do not mix oil in gasoline or modify engine to run on alternate fuels not described in this
manual. Use of unapproved fuels could damage engine and will not be covered under warranty.
1. Clean area around fuel 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.
Red Line Indicator
3. Install fuel cap and let any spilled fuel evaporate before starting engine.
Operation at High Altitude
At altitudes over 5,000 feet(1524 meters), a minimum 85 octane gasoline is acceptable.
Engine power and generator output will be reduced approximately 3.5% for every 1000 feet (305 m)
of elevation above sea level. High altitude may cause hard starting, increased fuel consumption
and sparkplug fouling. To operate at high altitudes FIRMAN can provide a high altitude carburetor
main jet. The alternative main jet and installation instructions can be obtained by contacting
Customer Support.
NOTICE Operation using an alternative main jet at elevations lower than the recommended
minimum altitude can damage the engine. For operation at lower elevations, the standard main
jet supplied must be used. Operating the engine with the wrong main jet may increase exhaust
emissions, fuel consumption and reduce performance.
Altitude main jet 1
Altitude main jet 2
193cc
333717002
333717003
Altitude
3000-6000Feet
6000-8000Feet
Operation at High Ambient conditions
15
OPERATION
Your Firman Power Equipment product is designed and rated for continuous operation at ambient
temperatures up to 104°F (40°C). The generator may be operated at temperatures ranging from
5°F(-15°C) to 122°F(50°C) for short periods. If the generator is exposed to temperatures outside
this range during storage, the generator should be brought back within this range before
operation. When o perated abo ve 77°F(25° C) there may be a decrease in power .
Maximum wattage and current are subject to and limited by such factors as ambient temperature,
altitude, engine conditions etc.

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16
OPERATION
3.Starting the Generator
1. Before starting the generator, check for loose or missing parts and for any damage which may
have occurred during shipment. Ensure spark plug, muffler, fuel cap, and air cleaner are all in place.
2. Move portable generator outdoors to safe operating location at least 20 feet from any occupied
spaces.
3. Disconnect all electrical loads from the generator. Never start or stop the generator with
electrical devices plugged in.
5. Flip the engine switch to the “RUN"(l) position.
6. Push the battery power restore switch for about 3 seconds and then release.
4. Turn the fuel valve to the “ON”(l) position.
7. Push the choke button to the “CHOKE” position.
(For remote start move to step (11))
You do not need to choke a warm engine.

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17
OPERATION
8. For recoil start only-Pull the starter cord slowly until resistance is felt and then pull rapidly to
start engine.
12. Allow portable generator to run at no load for a few minutes to stabilize before plugging in
any electrical devices.
NOTICE If engine starts but fails to run, or if portable generator shuts down during operation,
check oil level. See Low Oil Shutdown section for more information.
9. For electric start only-Flip the engine switch to the START (ll) position for a few seconds and then release.
10. Do not over-choke. As soon as engine starts and warms up, move the choke button to the “RUN”
position.
11. Push and release the ''START'' button on the remote control.
generator will turn over for 3 to 5 seconds and start.
For remote start only- The
START

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This inverter generator has been pretested and adjusted to handle its full capacity.
4. Connecting Electrical Loads
Damaged or overloaded extension cords could overheat, arc, and burn resulting death or
serious injury.
Use a ground fault circuit interrupter (GFCI) in any damp or highly conductive area, such as
metal decking.
Do not touch bare wires or receptacles.
WARNING! Generator voltage could cause electrical shock or burn
resulting in death or serious injury.
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18
OPERATION
Do not use generator with electrical cords which are worn, frayed, bare or otherwise damaged.
Do not operate generator in the rain or wet weather.
Do not run indoors to avoid wet conditions.
Do not handle generator or electrical cords while standing in water, while barefoot, or while
hands or feet are wet.
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1.Ensure circuit breaker on control panel is in the closed (on) position.
2. Start the generator with no electrical load attached.
3. Allow the engine to run for several minutes to stabilize.
4. Plug in and turn on the first item. It is best to attach the item with the largest load first.
5. Allow the engine to stabilize.
6. Plug in and turn on the next item.
7. Allow the engine to stabilize.
8. Repeat steps 5-6 for each additional item.
Surge Protection
There is a remote chance that voltage fluctuations may impair the proper functioning of some
sensitive electronic equipment. Electronic devices, including computers and many programmable
appliances may use components that are designed to operate within a narrow voltage range and
may be affected by the portable generator’s momentary voltage fluctuations. While there is no
way to prevent all voltage fluctuations, you can take steps to protect your sensitive electronic
equipment. Install a plug-in surge suppressor on the receptacles feeding your sensitive equipment.
Surge suppressors come in single or multi-outlet styles. They are designed to protect against short
duration voltage fluctuations.