Firman P01204
Generator · Performance. Specs from the manufacturer page (checked ).

The Firman P01204 is a gasoline-powered inverter generator rated at 1200 running watts and 1500 starting watts, with 120 Volt output. It has an 80cc engine and a 1.7-gallon steel tank that gives up to 10 hours of run time at 50% load. The page lists its weight as 54 lbs.
Key features
- 80cc engine with recoil start
- Low oil shut off and cast iron sleeve
- 1200 running watts and 1500 starting watts
- Up to 10 hours of run time at 50% load on a 1.7-gallon steel tank
- Fuel gauge and Carbon Monoxide (CO) Alert
- Multi-feature control panel with covered outlets
- One 5-20R 120V 20A duplex outlet (10A/120V/1200W)
- 74 dB at 7m and 75% load; 3-year warranty
Specifications
| Running watts | 1200 W |
|---|---|
| Peak / surge | 1500 W |
| Fuel | gasoline |
| Tank | 6.4 L (1.7 gal) |
| Run time at 50 % load | 10 h |
| Noise | 74 dB |
| AC output voltage | 120 Volts |
| Weight | 24.5 kg (54.0 lb) |
| Warranty | 3 years |
From the Firman page. Values the manufacturer does not publish are left out.
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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 31 →
- Wiring diagram, manual page 32 →
- Wiring diagram, manual page 33 →
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 P01204 run on a tank?
The maker rates it at 10 hours at 50 % load (about 600 W) on a 1.7-gal tank. A light load such as a refrigerator and lights runs longer; a full load runs shorter.
Can the Firman P01204 start a sump pump or well pump?
Starting surge matters more than running watts: this unit is rated 1500 W peak. That is below a typical 1/2 HP sump pump start (about 2150 W); check your pump label. Use the calculator with your exact pump.