The 7500-Watt Dual Fuel puts out 7,500 W continuously and up to 9,375 W for a few seconds when a motor starts. On propane it's rated at 6,750 W running and 8,400 W starting. It runs up to 10 h on gasoline at 50% load on a full 7.7 gal29.1 L tank. It weighs 205 lb93 kg. Noise is rated at 74 dBA at 23 ft, load not stated. It takes 37.2 fl oz1.1 L of engine oil, and the source recommends 10W-30. The spark plug is F6RTC (OEM) or NGK BPR6ES or equivalent, gap 0.024–0.031 in (0.6–0.8 mm).
Specifications
Units: /| Power | |
|---|---|
| Running output | 7,500 W 1 |
| Starting output | 9,375 W 1 |
| Running output on propane | 6,750 W 1 |
| Starting output on propane | 8,400 W 1 |
| Voltage | 120/240 V, 60 Hz 1 |
| Engine | |
| Engine | Champion GB440EM-2, 4-stroke OHV 1 |
| Displacement | 439 cc 1 |
| Fuel | Unleaded gasoline (87 octane minimum, up to 10% ethanol) or propane (LPG) 1 |
| Starting | Electric and manual 1 |
| Fuel and run time | |
| Tank | 7.7 gal29.1 L 1 |
| Run time | 10 h 2on gasoline at 50% loadOn propane: 5.5 hours at 50% load with a 20 lb tank. |
| Size and noise | |
| Weight | 205 lb93 kg 1 |
| Length × width × height | 28.9 × 27.7 × 26.1 in73.3 × 70.3 × 66.3 cm 1 |
| Noise | 74 dBA 2at 23 ft, load not stated |
| Outlets | |
| Outlets | 4 × 120 V 20 A GFCI (NEMA 5-20R) 1 × 120 V 30 A locking (NEMA L5-30R) 1 × 120/240 V 30 A locking (NEMA L14-30R) |
| Other | |
| Emissions certification | EPA certified, CARB compliant 2 |
| Warranty | 3 years limited; 2 years on the emission control system 1 |
Oil, spark plug and service
What to have on the bench before an oil change or tune-up.
| Oil capacity | 37.2 fl oz1.1 L 1The manual gives 37.2 fl oz (1100 mL). Champion's product page listed 1.2 qt. |
| Oil type | 10W-30 15W-30, 10W-40 or full synthetic 5W-30 depending on outdoor temperature. Synthetic oil may be used after the 5-hour break-in. |
| Spark plug | F6RTC (OEM) or NGK BPR6ES or equivalent, gap 0.024–0.031 in (0.6–0.8 mm) 1 |
| Change oil every | After the first 5 hours (break-in), then every 100 hours or annually 1Every 50 hours under heavy load or in hot environments. |
Parts
Search links for common parts. Check the part number against the label on your unit before you buy.
| Part | Find it |
|---|---|
| Air filter | Amazon · eBay |
| Spark plug | Amazon · eBay |
| Engine oil | Amazon · eBay |
| Generator cover | Amazon · eBay |
We may earn a small commission if you buy through these links. It doesn't change what we list. More.
Model numbers
This page covers model number 100891. Brands often sell the same name under several numbers with small differences, so check the label on the frame.
Compare
Often compared: Westinghouse WGen7500, Generac GP8000E, DuroMax XP12000EH
Questions people ask
How much oil does the Champion 100891 7500-Watt Dual Fuel take?
37.2 fl oz1.1 L. Oil type: 10W-30. Oil change: After the first 5 hours (break-in), then every 100 hours or annually.
What spark plug does the Champion 100891 7500-Watt Dual Fuel use?
F6RTC (OEM) or NGK BPR6ES or equivalent, gap 0.024–0.031 in (0.6–0.8 mm), according to the source. Check the plug in your unit before you buy a replacement.
How long does the Champion 100891 7500-Watt Dual Fuel run on a tank?
10 h. That's on gasoline at 50% load, according to the source. More load means less time.
How much does the Champion 100891 7500-Watt Dual Fuel weigh?
205 lb93 kg.
How loud is the Champion 100891 7500-Watt Dual Fuel?
74 dBA. Measured at 23 ft, load not stated.
What's the difference between 7,500 W and 9,375 W?
7,500 W is what it can supply continuously. 9,375 W is a short burst for the moment a motor (a fridge, a pump, an AC unit) starts up.
Sources
- Champion 100891 operator's manual (rev. 20220518). Owner's manual, accessed November 12, 2026.
- Champion 100891 product page (Wayback Machine copy, 22 Sep 2023). Manufacturer, accessed November 12, 2026.
Found a mistake, or have a manual we're missing? Tell us. We fix errors within a few days.