Yamaha EF1000IS - 1000 Watt Lightweight Portable Inverter Generator

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Yamaha EF1000IS - 1000 Watt Lightweight Portable Inverter Generator

The 1000 Watt EF1000iS weighs in at 27.9 pounds, making it extremely portable. Among the quietest portable generators in its class, the EF1000iS features Smart Throttle which allows greater fuel efficiency and noise reduction. It will run up to 12 hours at ¼ rated load on a tank of gas. With features such as Pulse Width Modulation, Auto Warm-Up, and an Oil Watch Warning System, the EF1000iS is the most portable, efficient inverter you can buy!


Lightweight Design/Easy to Carry
Compact lightweight alternator reduces weight to 27.9 lb., the lightest weight in its class.

Smart Throttle, load sensing rpm control
Greater fuel efficiency and noise reduction by automatically adjusting engine speed to match the load.

Auto Warm-up
Automatically increases engine speed for 4~6 minutes to ensure smooth power delivery during cold start ups.

12 Volt DC output, battery-charging cables included
Recharge 12-volt batteries for RV, auto, marine, etc.

Exclusive dual coil alternator stator
Greater output at a lower engine speed for reduced noise, fuel consumption, and engine wear.

Centralized control panel
Easy access to controls.

Gasoline petcock lets you shut off the gas to run the carb dry for storage
Prevents stale gas problems.

50cc Overhead Valve (OHV) engine
Noise-reducing operation with improved efficiency, increased reliability, and low oil consumption.

Large fuel fill access
Wide mouth fuel fill reduces spilling and overflows during refueling.

EPA & CARB Emission Engine Durability Rating
Yamaha generators have the longest emission engine durability ratings issued by the Environmental Protection Agency and the California Air Resources Board.

50 state legal
Meets emmision regulations, including CARB.

Factory Warranty
Covers the entire generator for defects in parts and workmanship for three (3) years when the generator is used for non commercial, industrial or rental use. When the genertor is used for commercial, industrial or rental use, Yamaha covers the generaot for two (2) years.

Model / Model Code: EF1000iS
Warranty Type: 3 Year Limited Warranty
Dimensions (length/width/height): 17.7" x 9.4" x 14.9"
Dry Weight: 27.9 lbs
Engine Type: OHV, air-cooled, single cylinder, 4-stroke
Displacement / HP: 50cc / 2.2 HP
Fuel Tank Capacity: .66 Gallons
Fuel Type: Unleaded Regular
Cooling Type: Air Cooled
Type: Inverter
Maximum AC Output: 1000 Watts
Rated AC Output: 900 Watts
Rated AC Current / Max AC Current: 7.5 /8.3 amps @ 120V
Voltage Stability: ± 1%
Frequency Stability: ± 0.1Hz
12 Volt DC Output: 8 amps @ 12V
Noise Level 1/4 Load/ Full Load: 47 dBA / 57dBA
Continuous Operation at 1/4 Rated Load: 12.0 Hrs.

We are unable to ship this product. However, it is available to purchase in store. Take advantage of our in store deals and competitive pricing. Contact us or visit one of our many Russo Power Equipment locations today!


WARNING: This product may contain chemicals known to the State of California to cause cancer, birth defects and other reproductive harm. For more information, go to

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