Firman T13071
Generator. Specs from the manufacturer page (checked ).

The Firman T13071 is a tri-fuel inverter generator with a 760cc engine, rated at 13500 running watts and 16800 starting watts on gasoline. On LPG it is rated at 11000 running watts and 13750 starting watts, and on natural gas at 10000 running watts and 12500 starting watts.
Key features
- 760cc engine with electric start
- Running watts 13500 (gas), 11000 (LPG), 10000 (natural gas); starting watts 16800 (gas), 13750 (LPG), 12500 (natural gas)
- 120/240 volt output with two 5-20R 120V 20A duplex outlets, two L5-30R 120V 30A twistlock outlets, one L14-30R 120V/240V 30A twistlock outlet, one 14-50R 120V/240V 50A outlet, and one 12V DC power port (8.3A/12V DC/100W), with covered outlets on a multi-feature control panel
- 13.3-gallon fuel tank with fuel gauge
- Up to 11 hours of run time at 50% load
- Low oil shut off
- CO Alert sensor against carbon monoxide poisoning
- 81dB at 1/4 load
- 3-year warranty
Specifications
| Running watts | 13500 W |
|---|---|
| Peak / surge | 16800 W |
| Fuel | tri-fuel |
| Tank | 50.3 L (13.3 gal) |
| Run time at 50 % load | 11 h |
| AC output voltage | 120/240 volts |
| Weight | 176.9 kg (390.0 lb) |
| Warranty | 3 years |
From the Firman page. Values the manufacturer does not publish are left out.
What is in the box
- Battery Float
- Engine Oil
- Oil Funnel
- Tool Kit with Wrench
- Heavy Duty Wheel Kit
- 5.5ft LPG Hose
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Connection and wiring
Follow the diagrams in the Firman manual. Connecting to a home panel needs a transfer switch or interlock and a licensed electrician.
- Wiring diagram, manual page 2 →
- Wiring diagram, manual page 39 →
- Wiring diagram, manual page 40 →
- Wiring diagram, manual page 41 →
- Wiring diagram, manual page 42 →
Error codes and troubleshooting
We found no error-code table in this manual. Its troubleshooting section is the reference.
FAQ
How long does the Firman T13071 run on a tank?
The maker rates it at 11 hours at 50 % load (about 6,750 W) on a 13.3-gal tank. A light load such as a refrigerator and lights runs longer; a full load runs shorter.
Can the Firman T13071 start a sump pump or well pump?
Starting surge matters more than running watts: this unit is rated 16800 W peak. That covers a typical 1/2 HP sump pump (about 2150 W to start). Use the calculator with your exact pump.