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Yamaha EF2000iSv2 2000 Watt Inverter Generator
Yamaha EF2000iSv2 Generator
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  • EF2000 Camo Version
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Price: $989.10

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The Yamaha 2000 Watt EF2000iSv2 incorporates a completely new controller with advanced programming, allowing the EF2000iSv2 the ability to power a much wider range of applications. It weighs in at 44.1 pounds, making it easily portable. Among the quietest portable generators in its class, the EF2000iSv2 features Smart Throttle technology which allows greater fuel efficiency and noise reduction.


  • Fuel Petcock ‐ Prevents stale gas problems and gummed‐up carburetors.
  • Fuel Gauge ‐ Allows quick fuel level inspection without turning off the unit and removing the fuel cap.
  • Smart Throttle™ ‐ Varies engine speed based on load, improving fuel economy as well as reducing noise and engine wear.
  • Electrical Overload Breaker – Prevents generator damage, in case of overload.
  • Oil Watch Warning System ‐ Prevents engine damage caused by low oil, avoiding costly repairs and minimizing down time, adding customer confidence and peace‐of‐mind.
  • TwinTech™ – Hook up two EF2000iSv2 generators for up to 30 amps of maximum power (requires accessory TwinTech II or Sidewinder cable, available for purchase).


1. What's the difference between the older model EF2000is and the new EF2000isV2?

The redesigned EF2000is has a new controller board which will allow you to run the generator at the maximum AC Output for a longer period of time before overloading. The maximum AC output is 2000 watts. The older version of the EF2000(is) will only run for 20 seconds at maximum AC output before the overload circuit trips. The new EF2000isV2 will run for up to 13 minutes before the overload circuit trips. The major benefit will allow you to run more appliances that cycle like Air Conditioners, or refrigerators which require more power upon startup to run at the same time. Simply stated, you now have a true 2000 watt generator.

2. Can I parallel the new EF2000isV2 model with an older EF2000iS?

Yes, you can connect the different models together, however in parallel the V2 controller board will operate like the older model. Maximum AC output will not operate for up to 13 minutes.

Generator Applications
The New EF2000iSv2
Yamaha Versus the Competition - WHY YAMAHA?
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Sidewinder Parallel Cable - ACC-0SS55-70-01 EF2000iS Yamaha Generator Cover Twin Tech Cable II Yamaha Generator Oil
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Average Rating: 5 of 5 Total Reviews: 323 Write a review »

  0 of 0 people found the following review helpful:
Light weight, quiet & easy starting. April 26, 2017
Reviewer: Gordon Adler from ELKINS PARK, PA United States  
Does not respond well to 3/4 load start-up when in econo mode at low rpm. If you run items that require large variance in power such as small air conditioning you need to run generator without econo mode ( at 4,500 RPM ). Otherwise this is a well made, quality generator.

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  0 of 0 people found the following review helpful:
Performs as advertised April 25, 2017
Reviewer: Richard K from Bozeman, MT United States  
Arrived two days earlier than expected. Took on camping trip three days later, ran flawlessly and very quiet. Chose Yamaha over Honda mainly over features, like gas shut off valve, charging cables were included and price.

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  0 of 0 people found the following review helpful:
Great generator April 23, 2017
Reviewer: Robert Dalley from Pine Valley, UT United States  
The sales process, delivery and starting first time were fantastic. Filled it with oil and gas and started on the first pull. Ran it for 1.5 hours at first use and worked great !

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  0 of 0 people found the following review helpful:
Great little inverter! April 20, 2017
Reviewer: Edward Courtemanche from Jericho, VT United States  
This generator started FIRST pull out of the box after I put in oil and gas!! Purred like a little kitten. Extra quiet and works as it should. Glad I spent the extra and got this one!

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  0 of 0 people found the following review helpful:
EF2000iSv2 April 20, 2017
Reviewer: Jason Sharpe from Eagle, CO United States  
I had an issue changing my billing address through my bank, but it wasn't a big deal.
Jillian Jenkins was great to work with and she deserves a lot of credit for making my order run smoothly.


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