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Yamaha EF6300iSDE 6300 Watt Generator
EF6300iSDE, EF6300IS
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Price: $3,689.10

   Current Availability: In Stock - Orders Received by 2PM PST Ship Same Day - SEE REDUCED PRICE IN SHOPPING CART

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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: 5 of 5 Total Reviews: 36 Write a review »

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  1 of 1 people found the following review helpful:
My EF6300IS GENERATOR May 14, 2018
Reviewer: Jack Hernandez from Auburn, WA United States  
Was very easy to order and was here in 2 days. Delivered to my home in a well packed crate. Best purchase and the best price. Runs great. Thank you National supply.

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  0 of 0 people found the following review helpful:
6300generator January 2, 2018
Reviewer: craig johnson from Vancouver, WA United States  
Thank you for the prompt shipping...I still need  the remote start kit for this unit    thanks CJ

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  2 of 2 people found the following review helpful:
Excellent! October 24, 2017
Reviewer: Felix from Puerto Rico  
I bought the EF6300 for Puerto Rico after Hurricane Maria.  Excellent service and delivery.  Arrived with only a few days of delay considering the conditions of Puerto Rico. For Puerto Rico you have to pick it up at the docks and pay taxes. It is a great product!

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  0 of 0 people found the following review helpful:
Great generator June 8, 2017
Reviewer: Christopher Schaefer from Kennesaw, GA United States  
Product arrived as promised!  Used it to run both 15,000 BTU air conditioners at the same time, and only got the power meter up to the halfway mark.  Pretty quiet for the power.  Time will tell how it holds up, but my initial experience is great!

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  0 of 1 people found the following review helpful:
GREAT 6300 October 18, 2016
Reviewer: James R Sanders from Grandview, MO United States  
The 6300 Inverter is without a doubt the best you can get....WOW......

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