FIRMAN T09275 Tri-Fuel Portable Generator – 9,200 Running Watts

Powerful, Flexible Backup Energy for Home, Farm, and Job Sites

The FIRMAN T09275 Tri-Fuel Portable Generator delivers dependable power when unexpected outages or demanding projects arise. Powered by a robust 459cc engine, it operates on gasoline, liquid propane (LPG), or natural gas (NG), giving you the flexibility to choose the fuel that best suits your needs.

Producing up to 11,400 starting watts and 9,200 running watts on gasoline, the T09275 is designed for home backup, job sites, farms, ranches, and other demanding applications. Its electric and recoil starting systems, 9-gallon steel fuel tank, and multiple outlet options provide practical convenience, while CO Alert technology and automatic low-oil shutoff add important safety protections.

When connected through a properly installed transfer switch, the T09275 can provide portable backup power for selected household circuits.

Key Features

Tri-Fuel Flexibility

Choose from three fuel sources to suit availability and operating requirements:

Fuel Type	Starting Watts	Running Watts
Gasoline	11,400 W	9,200 W
Propane (LPG)	10,400 W	8,300 W
Natural Gas (NG)	8,650 W	6,900 W

Powerful 459cc FIRMAN Engine

The 459cc engine features a durable cast-iron cylinder sleeve and Power Stream alternator, supporting dependable performance for demanding power applications.

Electric and Recoil Starting

Start the generator using the convenient electric-start system or the recoil backup when needed.

Extended Runtime

The 9-gallon steel fuel tank provides up to 11 hours of runtime at 50% load, according to the supplied specifications. Actual runtime varies with fuel type, load, and operating conditions.

CO Alert Safety Technology

The built-in CO Alert system helps protect users by detecting dangerous carbon monoxide levels and initiating the specified safety response.

Always operate the generator outdoors, well away from doors, windows, vents, and occupied spaces. Carbon monoxide is potentially fatal, and the sensor does not make indoor operation safe.

Automatic Low-Oil Shutoff

The low-oil shutoff feature stops the engine when oil levels become too low, helping protect the engine from damage.

Multiple Outlet Options

The control panel includes GFCI-protected household outlets, twist-lock connections, and a 120/240V, 50A outlet for compatible equipment and backup power arrangements.

Convenient Portability

The T09275 features 11-inch flat-free plastic wheels and a single folding handle with a grip to help make transportation and positioning easier.

Technical Specifications

Specification	Details
Brand	FIRMAN
Model	T09275
Generator Type	Portable tri-fuel generator
Engine Displacement	459cc
Fuel Types	Gasoline, LPG/propane, natural gas
Starting Watts (Gasoline)	11,400 W
Running Watts (Gasoline)	9,200 W
Starting Watts (LPG)	10,400 W
Running Watts (LPG)	8,300 W
Starting Watts (Natural Gas)	8,650 W
Running Watts (Natural Gas)	6,900 W
AC Voltage	120/240V
Frequency	60Hz
Noise Level	74 dB at half load
Maximum Listed Runtime	Up to 11 hours at 50% load
Total Harmonic Distortion (THD)	11%–14% at full load
Fuel Tank Capacity	9 gallons
Fuel Tank Material	Steel
Starting System	Electric start and recoil start
CO Alert	Yes
Low-Oil Shutoff	Yes
Alternator	Power Stream
Cylinder Sleeve	Cast iron
Wheel Size	11 inches
Wheel Type	Flat-free plastic
Handle	Single folding handle with grip
Dimensions (L × W × H)	31 × 29.4 × 27 inches
Weight	217.5 lbs
UPC	840876192757

Outlet Configuration

Quantity	Outlet Type	Voltage	Amperage
1 duplex	5-20R GFCI household outlet	120V	20A
1	L5-30R twist-lock	120V	30A
1	L14-30R twist-lock	120/240V	30A
1	14-50R	120/240V	50A

Confirm the outlet labels and electrical requirements before connecting equipment.

Included Accessories

• FIRMAN T09275 Tri-Fuel Portable Generator


• Engine oil bottle


• Oil funnel


• Spark plug wrench


• Double open-ended wrench (10mm and 12mm)


• LPG regulator with hose holder

Certifications and Compliance

Certification	Status
EPA Certified	Yes
CARB Certified	No
cETL Certified	Yes
NOM Certified	Yes
UL Certified	No
ANSI/PGMA G300-2018	Yes

Ideal Applications

• Home backup power


• Farm and ranch operations


• Construction and job sites


• Home improvement and outdoor projects


• Emergency power following severe weather


• Backup power for selected household circuits with a compatible transfer switch

Safety and Operating Guidelines

• Operate the generator outdoors only, away from doors, windows, vents, and occupied spaces.


• Never run it inside a home, garage, shed, or other enclosed or partially enclosed area.


• Follow the manufacturer's instructions for fuel connections, maintenance, grounding, and safe operation.


• Use a properly rated transfer switch for home backup installations. Never connect the generator directly to household wiring without an approved arrangement.


• Verify that the generator's available output matches the starting and running requirements of connected equipment.


• Because the listed THD is 11%–14% at full load, verify compatibility before connecting sensitive electronics.

Why Choose the FIRMAN T09275?

The FIRMAN T09275 combines tri-fuel versatility, a powerful 459cc engine, substantial electrical output, multiple starting options, and essential safety features in a portable design. Its extended runtime and varied outlet configuration make it a practical option for backup power, farm work, and demanding job-site applications.

Important specification note: The supplied specifications list 11%–14% THD at full load. Verify this figure against the manufacturer's official documentation before advertising the generator as suitable for sensitive electronic devices. Runtime also varies with fuel type and load.

• We currently ship within the United States only.
• Enjoy free standard shipping on all orders.
• Orders are processed within 1–2 business days.
• Estimated Total Delivery Time is 4–7 business days.
• Tracking information will be sent to your email within 24 hours after your order has been dispatched.
• For more information about our shipping process, please view our full Shipping Policy.

• Not the right fit? Return or exchange within 30 days.
• Items must be unused and in original condition.
• Damaged products are eligible for a refund or replacement.Your line works well.
• For more information about our return & refund process, please view our full Return & Refund Policy.