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| Specification | Firman W01781 | Yamaha EF2200iS |
|---|---|---|
| General | ||
| Product type | Generator | Generator |
| Fuel | Gasoline | Gasoline |
| Inverter | Yes | Yes |
| Parallel capable | Yes | Yes |
| RV ready | No | Yes |
| Running watts | 1700 W | Winner: Winner: 1800 W |
| Starting watts | 2100 W | Winner: Winner: 2200 W |
| Noise (lower limit) | Winner: Winner: 54 dB | 57 dB |
| Weight | Winner: Winner: 45.9 lbs | 55.2 lbs |
| Run time @50% load | Winner: Winner: 4.25 h | Not available |
| Run time @25% load | 9 h | 10.5 h |
| Fuel tank | 0.9 gal | 1.24 gal |
| Fuel gauge | No | Yes |
| Approx. dimensions (L × W × H) | 20 x 12.1 x 16.7 | 21.9 x 11.8 x 18.5 |
| Electrical | ||
| Voltage (AC) | 120 | 120 |
| Voltage (DC) | 12 | 12 |
| GFCI outlets | No | No |
| Covered outlets | Yes | No |
| Automatic Voltage Regulation | Yes | Yes |
| THD | ≤ 3% % | 2.5 % |
| Engine | ||
| Engine | 80 cc Firman Max-Pro Series OHV 4-stroke, cast iron sleeve | 79 cc Yamaha MZ80 OHV 4-stroke |
| Alternator | Not available | Not available |
| Starting system | Recoil | Recoil |
| Warranty | ||
| Warranty | 3 years | 3 years |
| Power by fuel | ||
| Gasoline | Not available | Not available |
| Running watts | 1700 W | 1800 W |
| Starting watts | 2100 W | 2200 W |
| Running amps (120V) | Not available | Not available |
| Running amps (240V) | Not available | Not available |
| Peak amps (120V) | Not available | Not available |
| Peak amps (240V) | Not available | Not available |
| Run time @50% load | 4.25 h | Not available |
| Run time @25% load | 9 h | 10.5 h |
| Other | ||
| Data center | Not available | Not available |
| Indicators | true | true |
| Compliance | CARB, EPA | CARB, EPA |
| Security | Not available | Not available |
| Spark arrestor | Yes | Yes |
| Neutral | Floating | Not available |
| UPC | 840876117811 | 810856030317 |
| Core / High-priority specs | ||
| Running Watts (Gasoline) | 1700 | 1800 |
| Starting Watts (Gasoline) | 2100 | 2200 |
| Runtime @ 50% Load (Gasoline) | 4.25 | Not available |
| Runtime @ 25% Load (Gasoline) | 9 | 10.5 |
| AC Outlet Types | 1x Duplex 120V 20A (5-20R) | 1x Duplex 120V 20A (5-20R); 1x 120V 30A (TT-30R) |
| Electrical & power | ||
| Frequency | 60 | 60 |
| Engine & construction | ||
| Engine Type | OHV 4-stroke | OHV 4-stroke |
| Engine Displacement | 80 | 79 |
| Engine Oil Type | 10W-30 | Not available |
| Runtime & fuel system | ||
| Runtime @ 25% Load (Gasoline) | 9 | 10.5 |
| Runtime @ 50% Load (Gasoline) | 4.25 | Not available |
| Safety & compliance | ||
| Overload Protection System | Not available | Low oil and overload protection |
| Low Oil Protection | Yes | Yes |
| Carbon Monoxide Monitoring | No | Yes |
| Included equipment | ||
| Included Accessories | Oil, funnel, tool kit, and battery charging cables | No accessories |
| Warranty & identification | ||
| Commercial Warranty | Not available | 3 |
| Additional specs | ||
| Summary | The Firman W01781 is a 1700-watt inverter generator built for users who need portable power without sacrificing quiet operation. At 1700 running watts and 2100 peak watts, it handles small appliances, power tools, laptops, and camping equipment. The 80cc OHV 4-stroke engine with cast iron sleeve delivers clean power through inverter technology, which means sensitive electronics like phones and laptops receive stable voltage without risk of damage. Runtime stretches to 9 hours at 25% load and 4.25 hours at 50% load from a 0.9-gallon tank, so users can plan refueling around their workload. At 54 decibels, it runs quieter than most job site generators, making it suitable for campgrounds, residential areas, and events where noise matters. | The Yamaha EF2200iS is a portable inverter generator that offers a balance between power and portability, making it ideal for campers, caravanners, adventurers, and outdoor enthusiasts. |