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The Yamaha EF3000iS 3000 Watt Inverter Generator comes with a FREE 3-year extended warranty, providing you with a 6-year factory warranty! Top features include:


  • CO Sensor for Safety
  • Oil Watch Warning System
  • Noise Blocking System
  • Smart Throttle


The 3000 Watt EF3000iS weighs 136 pounds. Designed to be acoustically sound, this extremely quiet generator (53-60 dBA) features Smart Throttle which allows greater fuel efficiency and noise reduction. It will run up to 19 hours at ¼ rated load on a tank of gas. With features such as Built-In Wheels, Noise Block, and an Oil Watch Warning System, the EF3000iS is a powerful yet portable medium-range inverter!



  Noise Block, acoustically designed sound reduction system ‐ Sound absorbing material, used in key locations, does not resonate sound. Newly designed muffler and molded fan produce unbeatable noise reduction at 53 - 60 dBA.

  Independent gasoline petcock ‐ Helps reduce carburetor cleaning and repairs by eliminating stale gas in the carburetor.

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

  Long run time ‐ Continuous operation for up to 18.6 hours without refueling (at 1/4 rated load with “Smart Throttle” function on).

  12 Volt DC output, battery charging cables included ‐ Recharge 12-volt batteries for RV, auto, marine, etc. Inverter system with Pulse Width Modulation (PWM) control ‐ Can run products with built-in microcomputers, or microcomputer-controlled electric tools.

  Centralized control panel ‐ Easy access to controls. 171cc Overhead Valve (OHV) engine ‐ Noise-reducing operation with improved efficiency, increased reliability, and low oil consumption.

  Oil Watch Warning system ‐ Prevents engine damage to avoid costly repairs and minimize down time adds customer confidence and peace of mind.

  Four wheels with parking brake ‐ Easy transport and mobility.

  EPA & CARB Emission Engine Life Rating ‐ Yamaha generators have the longest emission engine life ratings issued by the environmental.

  Automatic decompression ‐ Greatly reduces starting effort.

  Factory Warranty ‐ Covers the entire generator for defects in parts and workmanship for three (3) years.


  • Type


Maximum AC Output

3000 Watts

Rated AC Output

2800 Watts

Rated / Maximum AC Current

23.3 / 25 amps @ 120V


OHV, air-cooled, single cylinder, 4-stroke


171cc / 5.5hp

L x W x H

26.8" x 17.5" x 21.9"

Dry Weight

136 lbs

DC Output

12 amps @ 12V

Fuel Tank Capacity

3.4 Gallons

Continuous Operation at 1/4 Rated Load

19 hrs @ 1/4 rated load

Noise Level (1/4 Load - Rated Load)

53 dBA / 60 dBA


3 Years Limited Warranty