The 56203i puts out 1,700 W continuously and up to 2,000 W for a few seconds when a motor starts. It runs up to 7 h at 50% load on a full 1.06 gal4 L tank. It weighs 39 lb17.7 kg. Noise is rated at 51 dB at ¼ load, distance not stated. It takes 15 fl oz0.44 L of engine oil, and the source recommends 10W-30 between 0 and 40 °F, SAE 30 above 40 °F, or synthetic 5W-30 at any temperature; API SJ, SL or SM. The spark plug is Torch E5T (NGK BPR5HS), gap 0.6–0.8 mm (0.02–0.03 in).
Specifications
Units: /| Power | |
|---|---|
| Running output | 1,700 W 1 |
| Starting output | 2,000 W 1WEN calls this surge wattage. |
| Voltage | 120 V 1 |
| Inverter (clean power for electronics) | Yes 2 |
| Engine | |
| Engine | 4-stroke OHV, single cylinder, forced-air cooled 1 |
| Displacement | 79 cc 1 |
| Fuel | Unleaded gasoline, 87 octane minimum 1 |
| Starting | Recoil 1 |
| Fuel and run time | |
| Tank | 1.06 gal4 L 1 |
| Run time | 7 h 1at 50% load |
| Size and noise | |
| Weight | 39 lb17.7 kg 1 |
| Length × width × height | 17.3 × 11.5 × 17.7 in439 × 292 × 450 mm 1 |
| Noise | 51 dB 2at ¼ load, distance not stated |
| Outlets | |
| Outlets | 120 V duplex (5-20R), 14 A on a single generator 12 V DC outlet (8.3 A) 2 × 5 V USB (2.1 A and 1 A) |
| Other | |
| Warranty | 2 years 2 |
Oil, spark plug and service
What to have on the bench before an oil change or tune-up.
| Oil capacity | 15 fl oz0.44 L 1 |
| Oil type | 10W-30 between 0 and 40 °F, SAE 30 above 40 °F, or synthetic 5W-30 at any temperature; API SJ, SL or SM 1 |
| Spark plug | Torch E5T (NGK BPR5HS), gap 0.6–0.8 mm (0.02–0.03 in) 1 |
| Change oil every | Every 25 hours 1More often in dusty conditions or under heavy load. |
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 |
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 56203i. Brands often sell the same name under several numbers with small differences, so check the label on the frame.
Compare
Often compared: Predator 2000 Super Quiet Inverter, Yamaha EF2000iS, Westinghouse iGen2500
Questions people ask
How much oil does the WEN 56203i take?
15 fl oz0.44 L. Oil type: 10W-30 between 0 and 40 °F, SAE 30 above 40 °F, or synthetic 5W-30 at any temperature; API SJ, SL or SM. Oil change: Every 25 hours.
What spark plug does the WEN 56203i use?
Torch E5T (NGK BPR5HS), gap 0.6–0.8 mm (0.02–0.03 in), according to the source. Check the plug in your unit before you buy a replacement.
How long does the WEN 56203i run on a tank?
7 h. That's at 50% load, according to the source. More load means less time.
How much does the WEN 56203i weigh?
39 lb17.7 kg.
How loud is the WEN 56203i?
51 dB. Measured at ¼ load, distance not stated.
What's the difference between 1,700 W and 2,000 W?
1,700 W is what it can supply continuously. 2,000 W is a short burst for the moment a motor (a fridge, a pump, an AC unit) starts up.
Sources
- WEN 56203i instruction manual (2021). Owner's manual, accessed November 12, 2026.
- WEN 56203i product page. Manufacturer, accessed November 12, 2026.
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