The EF2200iS puts out 1,800 W continuously and up to 2,200 W for a few seconds when a motor starts. It runs up to 10.5 h at ¼ rated load on a full 1.24 gal4.7 L tank. It weighs 55.2 lb25.0 kg. Noise is rated at 57 dBA at ¼ load, 7 m. It takes 0.42 qt0.4 L of engine oil, and the source recommends Yamalube, SAE 10W-30 or 10W-40, API SE or higher (JASO MA or MB). The spark plug is NGK BPR6HS, gap 0.024–0.028 in (0.6–0.7 mm).
Specifications
Units: /| Power | |
|---|---|
| Running output | 1,800 W 1 |
| Starting output | 2,200 W 1 |
| Inverter (clean power for electronics) | Yes 1 |
| Engine | |
| Engine | OHV air-cooled single-cylinder 4-stroke 1 |
| Displacement | 79 cc 1 |
| Fuel and run time | |
| Tank | 1.24 gal4.7 L 1 |
| Run time | 10.5 h 1at ¼ rated load |
| Size and noise | |
| Weight | 55.2 lb25.0 kg 1Dry weight. |
| Noise | 57 dBA 2at ¼ load, 7 m65 dBA at rated load. |
| Outlets | |
| Outlets | 12 V DC output (3 A) Yamaha's spec page doesn't list the AC receptacles. |
| Other | |
| Warranty | 3-year limited 1 |
Oil, spark plug and service
What to have on the bench before an oil change or tune-up.
| Oil capacity | 0.42 qt0.4 L 2 |
| Oil type | Yamalube, SAE 10W-30 or 10W-40, API SE or higher (JASO MA or MB) 2 |
| Spark plug | NGK BPR6HS, gap 0.024–0.028 in (0.6–0.7 mm) 2 |
| Change oil every | After the first month or 20 hours, then every 6 months or 100 hours 2 |
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 |
| Parallel kit | 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 EF2200iS. Brands often sell the same name under several numbers with small differences, so check the label on the frame.
Compare
Often compared: Honda EU2200i, Predator 2000 Super Quiet Inverter, Yamaha EF2000iS
Questions people ask
How much oil does the Yamaha EF2200iS take?
0.42 qt0.4 L. Oil type: Yamalube, SAE 10W-30 or 10W-40, API SE or higher (JASO MA or MB). Oil change: After the first month or 20 hours, then every 6 months or 100 hours.
What spark plug does the Yamaha EF2200iS use?
NGK BPR6HS, gap 0.024–0.028 in (0.6–0.7 mm), according to the source. Check the plug in your unit before you buy a replacement.
How long does the Yamaha EF2200iS run on a tank?
10.5 h. That's at ¼ rated load, according to the source. More load means less time.
How much does the Yamaha EF2200iS weigh?
55.2 lb25.0 kg. Dry weight.
How loud is the Yamaha EF2200iS?
57 dBA. Measured at ¼ load, 7 m.
What's the difference between 1,800 W and 2,200 W?
1,800 W is what it can supply continuously. 2,200 W is a short burst for the moment a motor (a fridge, a pump, an AC unit) starts up.
Sources
- Yamaha EF2200iS specifications. Manufacturer, accessed November 11, 2026.
- Yamaha EF2200iS owner's manual (LIT-19626-02-81, 2021). Owner's manual, accessed November 12, 2026.
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