Yamaha EF1000iS 1 kVA inverter generator

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Model No: EF1000iS

A petrol powered inverter generator, the EF1000iS is the lightest generator in its class at only 12.7kg and will run continuously for up to 12 hours without refuelling (at 1/4 load with Eco On).

This small but hardworking unit is perfect for camping, fishing, boating, the caravan, motorhome and RV, and will run all your sensitive electronic equipment and accessories such as laptops / tablets, video gaming systems, phones, TVs, coffee maker, portable fan, microwave oven (up to 650 watts), slow cooker, stereo/radio or lighting.

This super light and super quiet unit comes with many great features (see below), and is also available with a dust cover as an optional extra.


Product Sheet




Power Rating: 1000 W
Generator Type: Inverter
Rated Voltage: 230 V
Frequency: 50 Hz
Rated Output: 900 W
Max. Output: 1000 W
DC Output: 12 V / 8 Amp
Dimensions: 450(L) x 240(W) x 380(H) mm

Weight: 12.7 kg
Fuel Tank Capacity: 2.5 L
Operating Hours (Eco On): 12 hr (1/4 load)
Noise Level @ 7m: 47 dBA (1/4 load) / 57 dBA (full load)
Engine Type: 0HV Air Cooled – MZ50
Displacement: 50 cc
Max. Output: 1.6 kW (2.2 hp) / 4000 rpm
Starting System: Recoil

Specifications subject to variation without notice.


What make our generators the better choice

Oil Warning System

Engine stops automatically when oil level is low, prevents engine damage and minimises costly repairs.

4-Stroke OHV Engine

Powerful performance, precise valve actuation, excellent heat dissipation, low fuel consumption and reduced noise level.

Electronic Circuit Breaker

Cuts off current when output voltage exceeds the designated maximum output capacity.

Auto Decompressor

Light recoil starting reduces compression for effortless starting.

Spark Arrestor

Keeps spark from exiting exhaust system to reduce risk of errant sparks causing a fire.

Brushless Alternator

Minimal maintenance, hassle-free service and clean output.

Ready to find out more?

Look for a dealer near you!