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Yamaha EF6300iSDE 6300 Watt Generator

EF6300iSDE, EF6300IS
Customer Reviews

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  • Yamaha Standard Warranty
  • Add a Yamaha Extended Warranty
Price: $3,380.00

   Current Availability: In Stock - Orders Received by 2PM PST Ship Same Day
Product Code: EF6300ISDE

Description Specifications Shipping & Terms

Genuine Factory New Yamaha Generators

The 6300 Watt EF6300iSDE weighs 200 pounds, starts with ease with its electric starter, and is capable of running an RV air conditioner, microwave oven and more all at the same time. Designed to be acoustically sound, this extremely quiet generator (58-64 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, Electric Start, Power Meter and an Oil Watch Warning System, the EF6300iSDE is one of the most powerful portable inverters in its class!


  • The EF6300iSDE cranks out up to 6300 watts of pure sine wave inverter.
  • With sophisticated capabilities like dual 120-volt and 240- volt power, you can run almost any type of equipment with total confidence. From high-demand equipment such as well pumps, compressors and RV air conditioners to sensitive electronics like plasma TVs, satellite receivers and computers.
  • With its electric starting capability, the automatic choke makes for easy starting. The EF6300iSDE is ideal for outdoor recreation and power outage emergencies.
  • Excellent fuel efficiency means a run time of 13.3 hours at a constant 1/4 load on just a single tank of gas.
  • The EF6300iSDE features Noise Block sound reduction system which makes it a very quiet generator for its output; 58-64 decibels.
  • Yamaha’s Oil Watch Warning System helps prevent engine damage from low oil and provides added peace of mind.


  • Noise Block ‐ Quiet, pleasant to use.
  • Pure Sine Wave (Pulse Width Modulation) Inverter System ‐ Run electronic equipment, appliances, variable-speed power tools and computers.
  • Smart Throttle ‐ Automatically adjusts engine speed to match power demand, reduces noise, fuel consumption and engine wear.
  • Wireless Remote (Optional) ‐ Start & Stop the generator from up to 66 feet away.
  • Electric start ‐ Effortless starting (battery included).
  • Automatic choke ‐ Effortless starting.
  • Low oil shutoff ‐ Protects engine from low oil damage.
  • Fuel level gauge ‐ See fuel level at a glance.
  • Dual voltage 120/240 volt ‐ Versatile, operate variety of 120V and 240V tools and appliances.
  • Power meter ‐ See how much power is being used and how much power is available.
  • Hour meter ‐ Shows accumulated running time for refueling and service scheduling.
  • Lightweight ‐ Easy transport.
  • Twin bar ‐ Aid lift, transport and provide security point.
  • Stylish design ‐ Nice appearance and Modern design.
  • 50 state legal ‐ Meets CARB emission regulations and given highest EPA rating.
EF4500iSE and EF6300iSDE
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Average Rating: Average Rating: 5 of 5 5 of 5 Total Reviews: 46 Write a review »

  0 of 0 people found the following review helpful:
5 of 5 Making sure it was right! December 3, 2019
Reviewer: William Behrends from narragansett, RI United States  
I had an excellent experience ordering my Yamaha generator from YamahaGenerators.Com     I received a phone call after ordering online.  It turned out that I needed a different product, and Nathan skillfully explained a better option for my home power needs.  The order was shipped quickly and made it from California to RI in a few days.  Nathan and I stayed in contact via email to make sure that my generator was set up properly.  After much research,  it turned out  they also had the best price on the internet.   A home run so far!

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  0 of 0 people found the following review helpful:
5 of 5 EF6300iSDE Inverter November 15, 2019
Reviewer: Sara Rowland from Petaluma, CA United States  
Was looking for a generator/inverter to run my 220 during blackouts.  Ordered a product I thought would work.  Customer service called me to be sure I was getting what I needed.  Holy Cow, both people were super and the information they gave me helped me pick a better product.  I'm SO VERY THANKFUL for their help.  This product will power my 220 well.  Plus it will run the TV/Computer without blowing them up due to the sensor in the unit.  If I had purchased the industrial generator it would have been louder and only capable of running the well.   THANK YOU National Supply, excellent customer service     Sara

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  0 of 0 people found the following review helpful:
5 of 5 October 5, 2019
Reviewer: Thomas Owens from Elgin, TX United States  
Very happy with the generator, it was exactly as stated in the ad. The local shipping terrible, 2 days from California to San Antonio, 1 day from San Antonio to Austin, 4 days from Austin to Elgin 30 miles.

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  0 of 0 people found the following review helpful:
5 of 5 May 30, 2019
Reviewer: Jon Proesch from Bismarck , ND United States  

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  1 of 1 people found the following review helpful:
5 of 5 EF6300iSDE Yamaha genterator April 4, 2019
Reviewer: Roy from silsbee, TX United States  
Delivery nice and secure and came with everything need to get started with for the generator. The deliver people did not notify me ahead of time like they was suppose to.  Luck I was getting ready to leave home when they called and they was only five minutes away.  Overall the service was great through National Supply. I would recommend to anyone.

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