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Yamaha EF3000iS 3000 Watt Inverter Generator

Yamaha EF3000iS
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Price: $1,899.00

   Current Availability: Out of Stock
Product Code: EF3000IS

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Genuine Factory New Yamaha Generators


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!


  • Yamaha generators have the longest emission engine durability ratings issued by the Environmental Protection Agency and the California Air Resources Board.
  • Independent gasoline petcock helps reduce carburetor cleaning and repairs by eliminating stale gas in the carb.
  • The EF3000iS is equipped with advanced features and is extremely quiet yet smartly priced.
  • The EF3000iS includes Yamaha’s performance enhancing features, such as Inverter Technology, Smart Throttle, and Noise Block.
  • The EF3000iS is capable of producing clean, high-quality electricity with extremely quiet operation (53 dBA – 60 dBA).
  • This unit also features a fresh, ergonomic design with easy control access.
  • The EF3000iS features built-in wheels, so its remarkably portable - providing convenient power to the locations you need it most.
  • Yamaha’s Oil Watch Warning System helps prevent engine damage from low oil and provides added peace of mind.


  • 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.


  • Powering Air Compressors
  • Powering Large Well Pumps
Inverter model generators will not operate to supply power to Air Compressors, or some Well Pumps due to the start up load. Talk to a Customer Service Rep for more details.

Inverter or Generator? What is the difference?
Yamaha Versus the Competition - WHY YAMAHA?
How to choose the right size Generator.

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Average Rating: Average Rating: 5 of 5 5 of 5 Total Reviews: 40 Write a review »

  1 of 1 people found the following review helpful:
5 of 5 Great Yamaha Dealer and Yamaha Generator! September 11, 2020
Reviewer: William Ford from Garden City, NY United States  
Highly recommend  YamahaGenerators.com as the premium Yamaha dealer and the EF3000IS Generator.    Sales process and delivery was perfect with lift gate service to my driveway.   The Yamaha EF3000IS generator has worked perfectly for me since January 2013 as a home back up generator connected to my reliance transfer switch.  Starts easily every time.  I just do standard maintenance, and start on a regular / monthly basis, and use fuel valve to  shot off fuel and carburetor drain each time to keep the carburetor clean, and I use Stabil  fuel stabilizer.  Reliable, efficient, and quiet generator.  Dealer provides reliable service with  safe and quick delivery of products in pristine condition.   No issues with generator over 7 years.   Recommend Yamaha  over all  generator  clone's which are more expensive in the long run with fuel leaks and when they do not work when you need them!   No worries when ordering from this dealer!

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  0 of 0 people found the following review helpful:
5 of 5 EF3000iS July 19, 2020
Reviewer: John Turner from Barksdale, TX United States  
Received in good condition. After adding Yamalube oil
and ethanol-free fuel, it started on the first pull as it has on every start since.  The generator got its first oil change at 20.4 hours, according to the Yamaha Engine Meter which was purchased with the generator and installed before start-up.  We now have a bit over 30 hours total, running the AC at our off-grid cabin.
Very pleased so far.

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  1 of 1 people found the following review helpful:
3 of 5 Careful, No Returns (AFTER) Fueling March 31, 2020
Reviewer: Alex V from TX United States  
Pay close attention to the specs.  I bought the EF3000iS Yamaha after comparing it to the Honda 3000iS line that has electric start.  I got it as expected and followed the instructions in the correct order.  Step 3 (after putting oil in) was to connect the battery, but I opened the battery compartment and there was no battery!  Turns out, I accidentally bought the non-electric start version.  I called to see what my options were and they said I own it because it has oil and gas in it and my only option is to try and sell it.  I get it, but now I am stuck with an expensive unused 130+ lbs generator that I have not been able to sell because nobody else wants it either.   Maybe I'll have to use it one day and it will be great, but it seems too heavy, low tech and expensive for a 3000watt generator.

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  0 of 0 people found the following review helpful:
5 of 5 Nice Unit] March 16, 2020
Reviewer: Marc St. Amour from Macungie, PA United States  
Generator is quiet and well built.

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  0 of 0 people found the following review helpful:
5 of 5 Easy and timely March 4, 2020
Reviewer: Kristy Fitzgerald from Frisco, TX United States  
When I placed the order, I never thought it would be delivered only a few days later. The delivery was quick and smooth. They did a great job communicating with me by email and phone. The reminder email to complete the warranty online was helpful too.

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