Yamaha generators have the longest emission engine durability ratings issued by the Environmental Protection Agency and the California Air Resources Board.
The EF1000iS weighs in at 27.9 pounds, making it extremely portable.
Noise Block is Yamaha’s acoustically engineered sound reduction system which helps make the EF1000iS among the quietest portable generator in its class. (47 dBA to 57 dBA – ¼ rated to rated load).
Gasoline petcock lets you shut off the gas to run the carb dry for storage and helps prevent stale gas problems.
The EF1000iS features Smart Throttle, a load sensing rpm control that allows greater fuel efficiency and noise reduction by automatically adjusting engine speed to match the load. It will run up to 12 hours at ¼ rated load on a tank of gas.
The Yamaha EF1000iS inverter generator supplies clean, high quality power. The EF1000iS – with its inverter system – features Pulse Width Modulation (PWM) so voltage stability is within ± 1%, and frequency stability is ± 0.1 HZ. Its pure sine wave is as clean as or cleaner than public utilities power.
The Auto Warm-up feature automatically increases engine speed for 4~6 minutes to ensure smooth power delivery during cold start ups.
Yamaha’s Oil Watch Warning System helps prevent engine damage from low oil and provides added peace of mind..
$879 – Blue –
Maximum AC Output
Rated AC Output
Rated / Maximum AC Current
7.5 /8.3 amps @ 120V
± 0.1 HZ
OHV, air-cooled, single cylinder, 4-stroke
L x W x H
17.7 x 9.4 x 14.9 in
8 amps @ 12V
Fuel Tank Capacity
Continuous Operation at 1/4 Rated Load
Noise Level (1/4 Load – Rated Load)
47- 57 dBA
Engine Speed @ 1/4 Load
Battery Charge Cord
3 Years Limited Warranty (except commercial/rental use = 2 year warranty)
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