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Yamaha EF2000iSv2 (Discontinued)

The Yamaha EF2000iSv2 is a quiet, compact and lightweight inverter generator with a rated wattage of 1600 W and a starting wattage of 2000 W.

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Yamaha EF2000iSv2Yamaha EF2000iSv2Yamaha EF2000iSv2

This product was discontinued. For your convenience, we decided to leave this page up.
It was replaced by the Yamaha EF2200iS. However, you might still find it second hand on eBay, by clicking on the button below.

Description

POWER‑PACKED, QUIET AND LIGHTWEIGHT. Quietly powers a wider range of applications for an extended time, while still portable and retro‑cool.

Zoom on the Yamaha EF2000iSv2

In a nutshell, the Yamaha EF2000iSv2 is a quiet, compact and lightweight portable inverter generator mostly geared towards:

  • Camping and tailgating hobbyists looking for a portable power source
  • Handcrafting enthusiasts who wish to work on-the-go

In the sections ahead, the power characteristics, availability of various outlets, the portability, and any additional features of the device shall be discussed, including its emission compliance information.

Power & Run Time

The Yamaha EF2000iSv2 in use

The Yamaha EF2000iSv2

The Yamaha EF2000iSv2's core is the 79 cc Yamaha MZ80 OHV 4-stroke engine, which runs on gasoline. With an output of 120V, it provides a running wattage of 1600W and a peak wattage of 2000W. Moreover, since it is parallel capable (Twin Tech cable (opens in a new tab) not included), its power may be doubled if linked to a second compatible unit.

The inverter generator boasts with a low noise rating of 51.5 dBA (just slightly more noisy than a quiet suburb) which earned its spot in our 10 quietest portable generators. Its starting mechanism is based on a conventional pull-start mechanism.

This generator features Yamaha's Smart Throttle™. This load-sensing feature automatically adjusts engine speed to match its load in order to offer greater fuel efficiency and noise reduction.

Thanks to a fuel capacity of 1.1 gallon, the EF2000iSv2 can operate for up to 10.5 hours with a full tank (fuel consumption around 0.1 GPH).

As the EF2000iSv2 produces a clean sine wave, with a <2.5% Total Harmonic Disruption (THD), sensitive electronics may be plugged in the AC outlets safely.

Outlets

The control panel provides the upcoming 2 AC outlets:

Duplex 120V 20A (5-20R)

It also sports 1 DC outlet: there's a 12V 8A receptacle with which charging your batteries is made easy.

Portability

The Yamaha EF2000iSv2's characteristic encased inverter generator design (L19.3 x W11 x H17.9 in), provides an esthetical advantage over any ordinary, open frame product. The design follows the contemporary trends and is perfect for recreationally generating power.

Labeled a lightweight portable generator, the EF2000iSv2 weighs just 44.1 lbs. The product’s power can be enjoyed on-the-go, as it can be moved by a single person without trouble. This convenience is further enhanced thanks to its handle (molded in the case) that allows you to carry it with ease.

Features

Panel of the Yamaha EF2000iSv2

The EF2000iSv2's control panel

When its oil levels are insufficient, the generator is overloaded and the generator is ready, you will be informed by the featured light indicators.

The inverter generator includes a built-in fuel gauge, a quick, easy and convenient method of checking the device’s gas level.

Security-wise, this product benefits from an overload protection (circuit breaker) and an automatic low oil shut-off (Oil Watch system), which gives you a complete peace of mind when using it.

Yamaha's Oil Watch warning system gives you an extra peace of mind. This feature enhances long-term durability by preventing engine damage and costly repairs. Once the oil begins to run low, the generator automatically shuts off and cannot be re-started until oil is added.

Regarding its accessories, besides the aforementioned features, the Yamaha EF2000iSv2's box includes the typical documentation and an owner's manual (opens in a new tab), letting you start it right off the bat. An official storage cover is available, as a separate purchase.

Emissions

The Yamaha EF2000iSv2 is EPA-approved and CARB-compliant. It can therefore be sold and purchased in all 50 states, including California.

Moreover, it features a spark arrestor and therefore, can be used in forested areas.

Product Videos

The Yamaha EF2000iSv2 versus other generators

The following charts are provided to give you an idea of how some of the key specs of the Yamaha EF2000iSv2 compare to generators of similar power (between 1500 and 2500 W).

  • In terms of its dry weight, the Yamaha EF2000iSv2 stands at only 44.1 lbs, meaning that is one of the lighter devices of the 1500-2500 rated wattage category If you are concerned by weight, one of the champions in the above-mentioned power range is the Genmax GM2000i, with a dry weight of just 34.2 pounds.
  • As its lowest possible noise is rated at 51.5 dBA, this inverter generator qualifies as one of the more quiet of the products of similar power. For those who are looking for a less noisy device, we suggest the Honda EU2200i. With just 48 dBA, it is one of the most quiet devices in this power range.
  • The EF2000iSv2, offering a run time of up to 10.5 hours with a full tank at a 25% load, falls within the average autonomy range when compared to its peers. If autonomy is your priority, one of the devices of a similar power output with the highest run time is the Westinghouse WGen2000, reaching up to 26 hours.
  • The run time is important, but also hugely depends on the capacity of the fuel tank and doesn't mean much if we don't talk about fuel consumption as well. At an estimated fuel consumption of 0.1 GPH (gallon per hour) at 25% load, this inverter generator is a rather fuel efficient one within its wattage category. If you are concerned with gasoline efficiency, having a fuel consumption of just 0.08 GPH, the Energizer eZV2200P is a device you could look out for.

The bottom line

STRENGTHS:
  • Parallel capable
  • Inverter
  • Lightweight (44.1 lbs)
  • Quiet for its power (51.5 dBA)
  • Fuel efficient
AVERAGE SPECS:
  • Decent run time
WEAKNESSES:
  • No data center
  • No electric start

Do you own the Yamaha EF2000iSv2 and agree (or disagree) with these strengths and weaknesses?

Let us know and write your own review.

Features and Specifications

General
InverterYes
PortableYes
Parallel capableYes, cable not included
RV readyNo
FuelGasoline
Engine79 cc Yamaha MZ80 OHV 4-stroke
Starting systemRecoil
Power
VoltageAC: 120V 60 Hz, DC: 12V
Running watts1600 W
Starting watts2000 W
Running amps13.3 amps
Peak amps16.7 amps
Run time @50% loadUnknown
Run time @25% load10.5 h
Features
GFCI outletsNo
Covered outletsNo
Automatic Voltage RegulationInverter
AC outlets1x Duplex 120V 20A (5-20R)
DC outlets1x 12V 8A receptacle
Data centerNo
IndicatorsLow oil, overload and output ready
Fuel tank1.1 gal
Fuel gaugeYes
Misc
Weight44.1 lbs
Approx. dimensions (L x W x H)19.3 x 11 x 17.9 in
Noise (lower limit)51.5 dBA
THD< 2.5%
ComplianceCARB, EPA
SecurityLow oil and overload protection
Spark arrestorYes
NeutralFloating
Accessories includedNo
Warranty3 years
UPC827624825464

Unlike many websites, we did our best to research each of the specs above. That being said, we are not immune to making the occasional mistake or omission. Should you notice any missing or incorrect values, don't hesitate to suggest improvements so we can address the issue.

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About Yamaha

With a rich history of over 130 years, the Japanese based Yamaha Corporation, founded in 1887, has tipped its fingers in every industry imaginable, most notably motorcycles, musical instruments and electronics. The company boasts with a wide range of products, including many of the top rated portable generators. However, it has been reported that many of the newer models are made in China, rather than Japan.

Warranty Information

The Yamaha EF2000iSv2 is covered under a warranty for up to 3 years. This warranty may be limited and may not cover all parts of the generator.
For more information about the warranty of Yamaha generators, please consult Yamaha's warranty policies (opens in a new tab). Alternatively, you can also contact their Customer Support: 1-800-962-7926.

Questions & Answers

What can it power?
Examples of items that can be simultaneously powered.
The examples below are based on a maximum load of 80% and estimated wattages. For a more accurate estimation, use our generator size calculator.
ItemRunning WattsStarting Watts
At homeRefrigerator (energy star)1921192
Toaster oven800800
Total992 W1992 W
For campingRV AC (11,000 BTU)10101600
RV refrigerator180600
Bug zapper8080
Total1270 W1860 W
For workDemolition hammer12601260
Total1260 W1260 W

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