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Yamaha EF6300iSDE - 5500/6300W Inverter Generator

The Yamaha EF6300iSDE is a quiet inverter generator with a rated wattage of 5,500 W and a starting wattage of 6,300 W.

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Set an alert for the Yamaha EF6300iSDE - Current lowest price: $4,799.00
Price History
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Price history for the Yamaha EF6300iSDE
Latest updates:
  • $4,799.00 - December 30, 2022
  • $3,999.00 - December 25, 2022
  • $4,219.00 - December 1, 2022
  • $4,799.00 - August 27, 2022
  • $4,229.10 - August 12, 2022
  • $4,799.00 - August 11, 2022
Data source: acmetools.com
Since: August 11, 2022
  • Highest Price: $4,799.00 - August 11, 2022
  • Lowest Price: $3,999.00 - December 25, 2022

Description

OUR MOST POWERFUL INVERTER EVER. The EF6300iSDE is the most powerful, most advanced Yamaha inverter generator ever. (source: Yamaha (opens in a new tab))

Zoom on the Yamaha EF6300iSDE

In summary, the Yamaha EF6300iSDE is a quiet portable inverter generator especially useful for:

  • RV travellers wishing to enhance their freedom and nomad lifestyle
  • People occasionally participating in outdoor fairs, festivals or events
  • Food van owners who know that just a short power outage could lose them hundreds of dollars
  • Homeowners who want to be able to use the most necessary devices in their household, even during a blackout
  • Camping and tailgating hobbyists looking for a portable power source
  • Professionals in need of safely powering high-intensity work or lighting equipment

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 EF6300iSDE in use

The Yamaha EF6300iSDE

The Yamaha EF6300iSDE's engine, 357 cc Yamaha MZ360 OHV 4-stroke, fueled by gasoline, can deliver 120/240V. It provides a running wattage of 5,500W and reaches a peak wattage of 6,300W.

The inverter generator features a convenient and easy-to-use electric starter (battery included). It is rated for a noise of 58 dBA (less noisy than a refrigerator).

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.

The EF6300iSDE can operate for up to 13.3 hours with a full tank (fuel consumption around 0.34 GPH), due to its fuel capacity of 4.5 gallons.

Sensitive electronics can be safely plugged in the AC outlets, as the EF6300iSDE produces a clean sine wave, with a <4% Total Harmonic Distortion (THD).

Outlets

The control panel features the upcoming 4 AC outlets:

Duplex 120V 20A (5-20R) GFCI
120V 30A (L5-30R) receptacle
120/240V 30A (L14-30R) receptacle

While this Yamaha generator is not RV Ready, its L5-30R receptacle can be used for a simple RV connection with an L5-30P to TT-30R adaptor. Besides, as it features a twist-lock L14-30R receptacle, the EF6300iSDE is transfer switch ready: in case of a power outage, you will be easily able to connect it to a breaker box and power your household.

Portability

The Yamaha EF6300iSDE's characteristic encased inverter generator design (L30.7 x W24.3 x H27.2 in), provides an esthetical advantage over any ordinary, open frame product. This modern design aims to provide an ideal power solution to recreational users.

Even though this device may be technically portable (as in movable), manipulation and transportation without special equipment can be a challenge, as it weighs 200 pounds. However, its challenging mobility is solved by its set of 4 wheels and its double handle, which will ease its displacement, once it is on the floor.

Features

Panel of the Yamaha EF6300iSDE

The EF6300iSDE's control panel

To help you monitor the EF6300iSDE's status and activity, its control panel is equipped with a digital data center, giving you information on the power output and lifetime run hours.

In addition to this info, the device’s light indicators will display if the generator is overloaded, the generator is ready and the oil level is too low.

A built-in fuel gauge allows for a quick, easy and convenient check of the fuel level of the inverter generator.

As for its security measures, the device features an overload protection (circuit breaker) and an automatic low oil shut-off (Oil Watch system), letting you use it with a peace of mind.

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.

It also includes a carbon monoxide sensor. This sensor is designed to monitor the level of carbon monoxide present during the generator's operation. If the generator is positioned incorrectly and carbon monoxide levels rise to an unsafe level, the generator will automatically shut down. It’s a welcomed additional security feature, but don’t forget to always take your generator outside (opens in a new tab).

Accessory-wise, along with the previously mentioned features, the Yamaha EF6300iSDE 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 EF6300iSDE 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 EF6300iSDE versus other generators

The following charts are provided to give you an idea of how some of the key specs of the Yamaha EF6300iSDE compare to generators of similar power (between 5000 and 6000 W).

  • At a dry weight of 200 pounds, the Yamaha EF6300iSDE is one of the heavier devices which can produce between 5000 and 6000 running watts. Regarding dry weight, one of the champions in the same power range is the Genmax GM6000XiE, with a dry weight of only 106.9 lbs.
  • With a lowest noise rating of 58 dBA, the inverter generator is one of the more quiet of the generators of similar power. If you’d prefer a less noisy device, one of the most quiet devices, which share the same power range with this one, is the Honda EU7000iS, whose lowest noise levels reach just 52 dBA.
  • Given that the EF6300iSDE reaches an autonomy of up to 13.3 hours with a full tank and at 25% load, it is placed within the average autonomy range of similarly powerful generators. Concerning the run times, one of the several devices with a comparable output, offering the highest autonomy, is the Westinghouse WGen6000, which is able to run for up to 18 hours.
  • Autonomy holds its importance, however, it is largely dependent on the generator’s fuel capacity and so, it is nonsensible to discuss it without mentioning fuel efficiency as well. This inverter generator reaches an estimated fuel consumption of 0.34 GPH (gallon per hour) at a 25% load, making it average, for the previously mentioned wattage range. If you wish to acquire one of the most gasoline efficient products of this power range, the Genmax GM5500i, with a fuel consumption of 0.27 GPH could be in your good books.
According to our stats, the following comparison is pretty popular: Yamaha EF6300iSDE vs Honda EU7000iS.

Price comparison

As you can see from this interactive chart, when compared to other 5000-6000W generators, the Yamaha EF6300iSDE is on the expensive side of the price range.

While certainly not the cheapest of its kind, purchasing it would most likely also mean enjoying the reliability of a high-end product.

The bottom line

STRENGTHS:
  • CO Sensor
  • GFCI Outlets
  • Electric start
  • Inverter
  • Quiet for its power (58 dBA)
AVERAGE SPECS:
  • Decent run time
  • Decent fuel efficiency
WEAKNESSES:
  • On the expensive side
  • No recoil back-up
  • No remote start
  • No parallel ports
  • On the heavy side (200 lbs)

Do you own the Yamaha EF6300iSDE and agree (or disagree) with these strengths and weaknesses?

Let us know and write your own review.

Features and Specifications

General
InverterYes
PortableYes
Parallel capableNo
RV readyNo
FuelGasoline
Engine357 cc Yamaha MZ360 OHV 4-stroke
Starting systemElectric
Power
VoltageAC: 120/240V 60 Hz
Running watts5,500 W
Starting watts6,300 W
Running amps (@120/240V)45.8/22.9 amps
Peak amps (@120/240V)52.5/26.3 amps
Run time @50% loadUnknown
Run time @25% load13.3 h
Features
GFCI outletsYes
Covered outletsNo
Automatic Voltage RegulationInverter
AC outlets
  • 1x 120V 30A (L5-30R)
  • 1x 120/240V 30A (L14-30R)
DC outletsNo
Data centerPower output and lifetime run hours
IndicatorsLow oil, overload and output ready
Fuel tankPlastic, 4.5 gal
Fuel gaugeYes
Misc
Weight200 lbs
Approx. dimensions (L x W x H)30.7 x 24.3 x 27.2 in
Noise (lower limit)58 dBA
THD< 4%
ComplianceCARB, EPA
SecurityLow oil and overload protection, CO monitoring
Spark arrestorYes
NeutralBonded to frame
Accessories includedBattery
Warranty3 years
UPC765053849371

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 EF6300iSDE 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 wattage calculator.
ItemRunning WattsStarting Watts
At homeSump pump (1/2 hp)10502150
Furnace fan (1/2 hp)8752350
Refrigerator (energy star)1921192
Electric range21002100
Security system180180
Total4397 W5872 W
For campingRadiant heater13001300
RV refrigerator180600
Hair dryer18001900
RV AC (11,000 BTU)10101600
Radio100100
Total4390 W4980 W
For workTable saw18004500
Grinder14002500
Drain cleaner250250
Bug zapper8080
Total3530 W6230 W

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Yamaha EF6300iSDE
9 Total Score
1 review
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Price
6
Value
10
Quality
10
Performance
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User Reviews

  1. 4.5
    Price
    60
    Value
    100
    Quality
    100
    Performance
    100

    I bought two of these generators ELEVEN years ago. I only run non ethanol premium in them. This gas is replaced every June. I keep full synthetic oil in the crankcase. I will run these generators at 30% load for one hour about once every three months. I clear the carbs of fuel before storing. These generators look, start, run and perform just like new. The ONLY issue I have had is that the onboard battery will not survive the 12 volt DC parasitic drain within a month. I have to remove both batteries from these generators and keep them on a battery tender.
    These two generators were a significant investment to make eleven years ago but I do not regret it to this day. Also, they are still holding at the same retail price I paid at that time.

    + PROS:
    • If properly maintained, this generator can have a long life and still run like new.
    - CONS:
    • Expensive, heavy, and will drain the battery.
    Helpful(8) Unhelpful(0)You have already voted this

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