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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:

  • Tailgating and campground aficionados with the desire of enjoying power anywhere they go
  • Amateur DIY lovers

The following sections will present you in detail its power characteristics, the different outlets it offers, its overall portability, the extra features it benefits from, and any relevant emission compliance details.

Power & Run Time

The Yamaha EF2000iSv2 in use

The Yamaha EF2000iSv2

The Yamaha EF2000iSv2 is powered by a 79 cc Yamaha MZ80 OHV 4-stroke engine. It delivers 120V, runs on gasoline and offers a running wattage of 1600W as well as a peak wattage of 2000W. Additionally, as the generator is parallel capable (Twin Tech cable (opens in a new tab) not included), it can be linked to a second unit for more power.

The inverter generator is rated for a noise of 51.5 dBA (just slightly more noisy than a conversation at home). 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.

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

Delicate electronics can be plugged in an AC outlets safely, as the EF2000iSv2 generates a clean sine wave, reaching a <2.5% Total Harmonic Disruption (THD).

Outlets

The control panel includes the following 2 AC outlets:

Duplex 120V 20A (5-20R)

In addition, it provides 1 DC outlet: there's a 12V 8A receptacle with which charging your batteries is made easy.

Portability

The Yamaha EF2000iSv2 is an inverter generator and has an encased design of the following dimensions: L19.3 x W11 x H17.9 in. Thus, it is more aesthetical than conventional, open frame products. The generator has a contemporary design, convenient for recreationally generating power.

With a weight of only 44.1 lbs, the EF2000iSv2 may be viewed as a lightweight and portable generator. As it can be moved by a single person without much effort, the generator and its power can be enjoyed on-the-go. It can also be carried without effort with a featured handle (molded in the case), further improving its convenience.

Features

Panel of the Yamaha EF2000iSv2

The EF2000iSv2's control panel

When the generator is ready, the oil level is too low and the generator is overloaded, you will be informed by the featured light indicators.

Thanks to a built-in fuel gauge, the inverter generator allows you to quickly, conveniently and easily check the gas level at a glance.

As far as security is concerned, the generator can be used with a peace of mind, as it features an automatic low oil shut-off (Oil Watch system) and an overload protection (circuit breaker).

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.

Accessory-wise, along with the previously mentioned features, the Yamaha EF2000iSv2 is packaged with the standard documentation and an owner's manual (opens in a new tab), helping you start the device right away. An official storage cover is available, as a separate purchase.

Emissions

The Yamaha EF2000iSv2 is EPA-approved and CARB-compliant. Thus, selling and purchasing this generator is allowed in each of the 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 inverter generators of similar power (between 1500 and 2500 W).

  • As far as its dry weight is concerned, the Yamaha EF2000iSv2 weighs just 44.1 pounds and thus, it is one of the lighter 1500 to 2500 rated wattage inverter generators. Regarding dry weight, one of the champions in the same power range is the Genmax GM2000i, with a dry weight of only 34.2 lbs.
  • At a lowest noise rating of 51.5 dBA, this inverter generator is one of the quieter devices of similar type and power. If you are concerned with noise, check out the Honda EU2200i, which is one of the least noisy generators in its power range, with a noise rating of just 48 dBA.
  • The EF2000iSv2, falls within the average autonomy range compared to inverter generators of a roughly same power, with a run time of up to 10.5 hours at a 25% load and a full tank. If you consider autonomy on a single full tank as one of the deciding factors, one of the generators in the same power range that offers the highest run time is the Yamaha EF2800i, with up to 14.7 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 not satisfied with the afore-mentioned fuel consumption, you may wish to check out the DuroMax XP2300iH. With a fuel consumption of as little as 0.08 GPH, it is one of the most efficient generators currently on the market.

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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