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Yamaha EF1000iS Generator

Discover the Yamaha EF1000iS 1KVA: Your Lightweight Power Companion

If you’re on the hunt for a portable generator that effortlessly combines lightweight design with exceptional functionality, look no further than the Yamaha EF1000iS. This compact dynamo packs a punch, delivering clean, high-quality power while offering a range of practical features.

Compact and Lightweight Design

One standout feature of the Yamaha EF1000iS 1KVA is its newly designed exterior and compact inverter unit, which results in a mere 12.7 kilograms of weight. This makes it the lightest generator in its class, ensuring ease of transport and storage.

Unbeatable Noise Reduction

Say goodbye to disruptive generator noise. The EF1000iS boasts Yamaha’s Noise Block acoustically designed sound reduction system, featuring a molded casing, noise-absorbing glass wool construction, and an innovative muffler design. The result? Unbeatable noise reduction, making your outdoor experience quieter and more peaceful.

Extended Run Time

With the Yamaha EF1000iS, you won’t have to worry about constant refuelling. This generator can run continuously for up to 12 hours without needing more fuel, all while maintaining a 1/4 load with the “Economy Control” function engaged.

Smart Throttle Control

Efficiency meets practicality with the EF1000iS’s load-sensing throttle control. This ingenious feature automatically adjusts the engine speed to match the load, enhancing fuel efficiency and minimizing noise pollution.

Versatile 12 Volt DC Output

Beyond powering your appliances, the Yamaha EF1000iS can also recharge 12-volt batteries for your RV, car, boat, or marine equipment. With a DC output of 8 amps, you’re equipped for various power needs.

Inverter System with Pulse Width Modulation

The Yamaha EF1000iS 1KVA employs an industry-leading inverter system with Pulse Width Modulation. This technology produces higher-quality and cleaner electricity, resulting in a pure sine wave as clean as commercial power. It’s perfect for operating products with built-in microcomputers, ensuring reliable performance.

Exclusive Dual Coil Alternator Stator

The dual coil alternator stator reduces engine speed, translating to reduced noise, lower fuel consumption, and minimized engine wear. This not only enhances the generator’s lifespan but also contributes to quieter operation.

Centralized Control Panel

Ease of use is paramount, and the EF1000iS delivers with its centralized control panel. Accessing and managing controls is a breeze, putting power at your fingertips.

Fuel Petcock for Carburettor Care

With a built-in fuel petcock, this generator prevents carburettor contamination by allowing you to turn off the gasoline flow and run the carburettor dry when not in use.

Efficient OHV 50cc Engine

The overhead valve (OHV) 50cc engine is a testament to efficiency, reliability, low oil consumption, and noise-reduction capabilities. It ensures that the EF1000iS operates at peak performance while keeping noise to a minimum.

Wide Fuel Fill Access

Refuelling is made simple with the wide mouth fuel fill, reducing the chances of spills and overflow during the process.

The Yamaha EF1000iS 1KVA is the ultimate lightweight power companion, offering a blend of convenience, efficiency, and reliability. Its compact design, unbeatable noise reduction, extended run time, and intelligent features make it a versatile and valuable addition to any outdoor adventure or power needs.

With the EF1000iS, you’re not just investing in a generator; you’re investing in peace of mind and performance excellence.

Order online by clicking the add to cart button now and we will deliver the Yamaha generator to your door via our express shipping option.

Weight 12.7 kg
Dimensions 400 × 240 × 380 cm



KVA Rating

1 KVA Generator


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Weight 12.7 kg
Dimensions 450 × 240 × 380 mm
Engine Type MZ50 – OHV Air Cooled
Displacement 50 cc
Generator Type Inverter
Rated Output 900W
Max Output 1000W
Starting System Recoil
Frequency 50Hz
DC Output 12v / 8 Amp
Rated Voltage 230V
Fuel Tank Capacity 2.5L
Operating Hours 12 hours (1/4 load, Eco On)
Noise Level @ 7m 47 dBA (1/4 load) / 57 dBA (full load)
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