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| Specification | Briggs & Stratton 30737 | Cummins Onan P9500df |
|---|---|---|
| General | ||
| Product type | Generator | Generator |
| Fuel | Gasoline | Dual-Fuel |
| Inverter | No | No |
| Parallel capable | No | No |
| RV ready | No | No |
| Running watts | 5000 W | Winner: Winner: 7500 W |
| Starting watts | 6250 W | Winner: Winner: 9500 W |
| Noise (lower limit) | 0 dB | Winner: Winner: 74 dB |
| Weight | Winner: Winner: 184 lbs | 194 lbs |
| Run time @50% load | Winner: Winner: 12 h | 11 h |
| Run time @25% load | Not available | 16 h |
| Fuel tank | 7.5 gal | 6.6 gal |
| Fuel gauge | Yes | Yes |
| Approx. dimensions (L × W × H) | 29 x 26 x 27 | 27.3 x 26.3 x 26.3 |
| Electrical | ||
| Voltage (AC) | 120/240 | 120/240 |
| Voltage (DC) | Not available | Not available |
| GFCI outlets | Yes | Yes |
| Covered outlets | Yes | Yes |
| Automatic Voltage Regulation | Yes | Yes |
| THD | Not available | 23 % |
| Engine | ||
| Engine | Briggs & Stratton PowerBuilt™ OHV 4-stroke | 420 cc Ducar OHV 4-stroke |
| Alternator | Not available | Not available |
| Starting system | Recoil | Recoil, Electric, Remote |
| Warranty | ||
| Warranty | 2 years | 3 years |
| Power by fuel | ||
| Gasoline | Not available | Not available |
| Running watts | 5000 W | 7500 W |
| Starting watts | 6250 W | 9500 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 | 12 h | 11 h |
| Run time @25% load | Not available | 16 h |
| Propane | Not available | Not available |
| Running watts | Not available | 6750 W |
| Starting watts | Not available | 8550 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 | Not available | Not available |
| Run time @25% load | Not available | 8 h |
| Other | ||
| Data center | Not available | Not available |
| Indicators | false | false |
| Compliance | N/A | EPA |
| Security | Not available | Not available |
| Spark arrestor | Yes | Yes |
| Neutral | Not available | true |
| UPC | 11675307370 | 690781007932 |
| Core / High-priority specs | ||
| Running Watts (Gasoline) | 5000 | 7500 |
| Running Watts (Propane) | Not available | 6750 |
| Starting Watts (Gasoline) | 6250 | 9500 |
| Starting Watts (Propane) | Not available | 8550 |
| Runtime @ 50% Load (Gasoline) | 12 | 11 |
| Runtime @ 25% Load (Gasoline) | Not available | 16 |
| Runtime @ 25% Load (Propane) | Not available | 8 |
| AC Outlet Types | 2x Duplex 120V 20A (5-20R) GFCI 1x Duplex 120V 20A (5-20R) 1x 120/240V 30A (L14-30R) | 2x Duplex 120V 20A (5-20R); 1x 120/240V 30A (L14-30R) |
| Electrical & power | ||
| Frequency | 60 | 60 |
| Engine & construction | ||
| Engine Type | Briggs & Stratton PowerBuilt™ OHV 4-stroke | Ducar OHV 4-stroke |
| Engine Displacement | 389 | 420 |
| Engine Oil Type | Not available | SAE 10W-30 |
| Runtime & fuel system | ||
| Runtime @ 25% Load (Gasoline) | Not available | 16 |
| Runtime @ 50% Load (Gasoline) | 12 | 11 |
| Safety & compliance | ||
| Overload Protection System | Low oil and overload protection | Low oil and overload protection |
| Low Oil Protection | Yes | Yes |
| Carbon Monoxide Monitoring | Yes | Yes |
| Included equipment | ||
| Included Accessories | Oil and wheel kit | Oil, funnel, tool kit, key fob, battery charger, propane hose, battery, and wheel kit |
| Warranty & identification | ||
| Commercial Warranty | Not available | 3 |
| Part Number | Not available | A074Z438 |
| Additional specs | ||
| Summary | The Briggs & Stratton 30737 is a 5000-watt gasoline generator built for homeowners and job site operators who need extended runtime without constant refueling. With 5000 running watts and 6250 peak watts, this unit can power a refrigerator, multiple lights, and power tools simultaneously, making it suitable for emergency backup or outdoor work. The 7.5-gallon fuel tank delivers 12 hours of runtime at half load, which means a full day of operation before refueling becomes necessary. This is a stationary-duty machine. At 184 pounds, it requires wheels or multiple people to move, so placement matters before startup. | The Cummins Onan P9500df is a 7500-watt dual-fuel generator built for users who need sustained power across multiple scenarios. Running on either gasoline or propane, it delivers 9500 peak watts, enough to start large air conditioning units or power multiple job site tools simultaneously. The dual-fuel architecture means users can switch between fuel sources based on availability and storage constraints. Propane tanks store longer without degradation, while gasoline offers wider accessibility. This flexibility makes the unit valuable for both seasonal backup power and year-round work environments.
The 194-pound weight and 27.3 x 26.3 x 26.3 inch footprint define this as a semi-portable unit. The included wheel kit enables movement across job sites or between storage locations, but this is not a grab-and-go machine. Users planning frequent relocation should factor in the logistical demands. The three-year commercial warranty covers manufacturing defects, giving buyers defined ownership support across the critical early-use period. |
