The 5000 Dual Fuel Super Quiet Inverter puts out 3,900 W continuously and up to 5,000 W for a few seconds when a motor starts. On propane it's rated at 3,600 W running and 5,000 W starting. It runs up to 18.2 h on gasoline at 25% load on a full 3.7 gal14 L tank. Noise is rated at 60.5 dBA at 23 ft, 25% load. It takes 0.64 qt0.6 L of engine oil, and the source recommends SAE 10W-30. The spark plug is F7TC (Torch) or equivalent, gap 0.028–0.031 in.
Specifications
Units: /| Power | |
|---|---|
| Running output | 3,900 W 1 |
| Starting output | 5,000 W 1Harbor Freight calls this maximum starting watts. |
| Running output on propane | 3,600 W 1 |
| Starting output on propane | 5,000 W 1 |
| Voltage | 120 V, 60 Hz 1 |
| Inverter (clean power for electronics) | Yes 1 |
| Engine | |
| Engine | Horizontal single cylinder, 4-stroke OHV, forced-air cooled 1 |
| Displacement | 224 cc 1 |
| Fuel | 87+ octane, stabilizer-treated unleaded gasoline or LPG/propane 1Propane needs a 20 lb tank minimum. |
| Starting | Electric, remote and recoil 1 |
| Fuel and run time | |
| Tank | 3.7 gal14 L 1 |
| Run time | 18.2 h 1on gasoline at 25% loadOn propane: 14.6 hours at 25% load with a 20 lb tank. |
| Size and noise | |
| Noise | 60.5 dBA 1at 23 ft, 25% load |
| Outlets | |
| Outlets | 2 × 120 V 20 A 1 × 120 V RV (TT-30R) 12 V DC two-pin outlet USB-A USB-C Parallel ports |
| Other | |
| CO shutdown | Carbon monoxide shutoff 1 |
| Emissions certification | EPA and CARB 1 |
| Warranty | 90 days retail; 2 years on the emissions control system 1 |
Oil, spark plug and service
What to have on the bench before an oil change or tune-up.
| Oil capacity | 0.64 qt0.6 L 1 |
| Oil type | SAE 10W-30 1 |
| Spark plug | F7TC (Torch) or equivalent, gap 0.028–0.031 in 1 |
| Change oil every | After the 30-hour break-in, then every 6 months or 100 hours 1 |
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 70143. Brands often sell the same name under several numbers with small differences, so check the label on the frame.
Compare
Often compared: Predator 3500 Super Quiet Inverter (item 56720), Westinghouse iGen4500, Champion 201318 4500-Watt RV Ready Inverter
Questions people ask
How much oil does the Predator 5000 Dual Fuel Super Quiet Inverter take?
0.64 qt0.6 L. Oil type: SAE 10W-30. Oil change: After the 30-hour break-in, then every 6 months or 100 hours.
What spark plug does the Predator 5000 Dual Fuel Super Quiet Inverter use?
F7TC (Torch) or equivalent, gap 0.028–0.031 in, according to the source. Check the plug in your unit before you buy a replacement.
How long does the Predator 5000 Dual Fuel Super Quiet Inverter run on a tank?
18.2 h. That's on gasoline at 25% load, according to the source. More load means less time.
How loud is the Predator 5000 Dual Fuel Super Quiet Inverter?
60.5 dBA. Measured at 23 ft, 25% load.
What's the difference between 3,900 W and 5,000 W?
3,900 W is what it can supply continuously. 5,000 W is a short burst for the moment a motor (a fridge, a pump, an AC unit) starts up.
Sources
- Harbor Freight owner's manual, item 70143 (UPC 193175490544). Owner's manual, accessed November 12, 2026.
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