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Yamaha EF6300ISDE - EF6300iSDE - 5500 Watt Electric Start Inverter Generator for sale.

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Yamaha EF6300iSDE - 5500 Watt Electric Start Inverter Generator

(Based on expert analysis, manufacturer ratings and customer reviews)
4.6 out of 54.6 out of 54.6 out of 54.6 out of 54.6 out of 5
5 Reviews
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  • Features
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Run Watts
Rated Watts
Surge Watts
Starting Watts
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Yamaha's Largest Inverter Generator For Home Use
Once limited to recreational generators
Now powerful enough to provide backup power to homes

Pure Sine Wave
Safely power computers and sensitive electronics

Smart Throttle™
Engine speed varies based on load

Electric Start (Battery Included)
Starts with the press of a button

Dual Voltage Technology
Operate a 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

Fuel Level Gauge
See fuel level at a glance

  Model Number:EF6300ISDE
 Made in USA:No
 Starting System:12-Volt Button Start
 HP/CC:357 cc
 Consumer Engine Warranty:3 Years
 Commercial Engine Warranty:3 Years
 Engine RPM:Inverter
 Low Oil Alert/Shutdown:Yes
 Cast Iron Sleeve:Yes
Product Specs
 Voltage120/240 Single-Phase
 Frequency:60 Hertz
 Auto Voltage Regulation:Yes
 Fuel TypeGasoline
 Rated Amps:23 Amps @ 240 Volts (Single Phase)
 Portability Kit:Plastic Wheels
 Tank Size:4.5 Gallons
 Run Time (50% Load):10.5 Hours
 Fuel Tank Material:Plastic
 Fuel Gauge:Yes
 Decibel Rating @ 7m:58-64 db(A)
 Idle Control:Yes
 Hour Meter:Yes
 Voltage Meter:Yes
 Lifting Eye:No
 Neutral Type:Bonded
 Assembly Required:Yes
 Weight:200 Lbs. (90.72 kilograms)
 Dimensions:30.4"L x 24.0"W x 27.0"H
(77.22 x 60.96 x 68.58 cm)
 Consumer Warranty:3 Years
 Commercial Warranty:3 Years
Download Documents


NEMA L14-30R

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  7 Questions
Q: I have a customer running propane on a Yamaha genset. While burning propane the engine burns excessive oil, not a problem on gasoline. Any ideas?
by Shane Bland from Florida on June 24, 2014

A: The Yamaha portable generators are engineered and warranted to operate on gasoline only. The reason your customer is burning through oil is due to the excessive temperatures of the unit.

Gasoline burns at 485 degrees F whereas propane burns at 1008 degrees F which will cause excessive heat within the engine in turn burning off the engine oil.

by Mike, Product Expert
Q: Can I run an electric dryer (4 wire), and nothing else at the same time, using the l14-30r plug on the Yamaha EF6300iSDE and an appropriate extension cord such as I might find at Home Depot?
by Tracey Bowen from New Mexico on September 16, 2013

A: Thank you for your Inquiry!

The Yamaha, EF6300ISDE is rated to produce, 23 amps at 240 volts. It is likely that this unit can support your electric dryer, however you will need to determine the starting amperage of that appliance in order to be certain. You can find this information printed on the serial label of your dryer.

Also, we recommend using heavy gauge extension cords to connect heavy electronics. You can find these locally, or on our site as well....

Extension Cords
by Mike, Product Expert
Q: Is there a recommended way I can direct the exhaust while using my Yamaha generator in a shed? I built the shed specifically for the the generator so It can be used in the rain and snow.
by Gerald Barben from Pennsylvania on August 19, 2013

A: We do not offer or recommend any extended exhaust for portable generators. They are required to be run outdoors as they are air cooled and require proper air flow for engine cooling and exhaust.

The following GenTent is recommended for use with the Yamaha EF generators but also requires a PVC frame for support....see links below....

GenTent GT20KB00TB

GenTent PVC Frame Kit

by Mike, Product Expert
Q: Is it possible to run the yamaha EF6300iSDE on propane or natural gas? I have seen some kits but not sure if the engine is actually made for it. thanks
by Joe from Connecticut on February 08, 2013

A: Yamaha generators are engineered and designed to operate on gasoline only and they do not have a specific conversion kit. We recommend using gasoline only because if you use a different fuel type you will void the warranty.

With these units designed and engineered to operate on gasoline, which has an ignition temperature of 485 F and Propane/Natural Gas has an ignition temperature of 1008 F, by changing the fuel type that over time you can easily damage the internal components of the engine and shorten the life of the unit.

We do not recommend altering the generators we offer to a different fuel type other then what they were engineered and designed for.

by Mike, Product Expert
Q: This Generator appears to be much more enclosed than usual. Does it require a cover for rain or snowy weather?
by Bill from New York on January 06, 2013

A: Yes, this unit does require a cover for wet weather as it is not water tight.

by Mike, Product Expert
Q: Are these quite running generators for like camping?
by Amy Braaten from Minnesota on July 31, 2012

A: Yes, the inverter style generators meet all the National Forestry requirements for noise levels.

by Mike, Product Expert
Q: Is the warranty on this product a factory warranty from Yamaha?
by Paul Turcotte from Maine on June 26, 2012

A: Yes, you get the full manufacturers warranty which would be covered by any local Yamaha service center that works on generators.

You can find the local service centers by clicking on the following link...

Service Center Locator

by Mike, Product Expert
Yamaha EF6300ISDE Reviews & Ratings
Write Review
Overall Rating
4.6 out of 54.6 out of 54.6 out of 54.6 out of 54.6 out of 5
Quiet (4)
Easy To Use (4)
High Quality (2)
Reliable (2)
Durable (1)
Expensive (4)
Heavy (3)
Not Maneuverable At All (1)
100% of respondents would recommend this product to a friend
5 Reviews  Sort by 
Frederick V.
Delmar, NY
Purchased from Power Equipment Direct
Purchased 6/6/14
Total Helpful Votes
11 Helpful Votes
Most Helpful Positive Review
5 out of 55 out of 55 out of 55 out of 55 out of 5
Nice Piece Of Machinery
Love it except one thing...NOT maneuverable at all unless it is a straight line. PLEASE add castors for the front and lockable castors for the rear.
Pros: Quiet, Easy To Use, Reliable, Not A Gas Hog
Cons: Expensive, Heavy, Not Maneuverable At All
Frederick Recommends This Yamaha Product
Frederick's Experience With Power Equipment Direct
Web Site


"Took it camping a few times now and it very quite compared to the others in the camp ground..."
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Preston S.
Ellensburg, WA
Purchased from Power Equipment Direct
Purchased 8/17/12
Total Helpful Votes
32 Helpful Votes
4 out of 54 out of 54 out of 54 out of 54 out of 5
Could Use Caster Wheels
This generator has four straight-axle mounted wheels. Two on one end need to be castered. As is, to turn when moving from place to place you have to pick up one end and move it sideways.

The screws securing the side panels need to be captive. They are lost screws waiting to happen.

The unit starts easily and runs quietly.
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Susan E.
Plano, TX
Purchased from Power Equipment Direct
Purchased 6/23/13
Total Helpful Votes
20 Helpful Votes
5 out of 55 out of 55 out of 55 out of 55 out of 5
Great For Our Rv
We used this generator with our 34 ft RV, it ran two 15,000 btu AC units and we had lights, water pump etc. very impressed! It used 4.5 gals of fuel in 6 hours on economy and kept the RV at 69' in 102' weather. It's quiet and looks great, only issues are its heavy, especailly if you have to lift it in and out of the truck, and it can't be used in the rain!
Pros: Easy To Use, Quiet, High Quality, I'd Buy It Again
Cons: Heavy, Expensive
Susan Recommends This Yamaha Product
Susan Would Recommend Power Equipment Direct To A Friend
Web Site


"Arrived very quickly and was well packed!"
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David T.
Staten Island, NY
Purchased from Power Equipment Direct
Purchased 11/25/13
Total Reviews
2 Reviews
Total Helpful Votes
13 Helpful Votes
4 out of 54 out of 54 out of 54 out of 54 out of 5
Great Buy!!
Very very nice upgrade from what I had. Very quiet and great piece of equipment. Huge draw back is wheels are fixed, hard to move around. Love it...
Pros: Easy To Use, Quiet, Features, High Quality
Cons: Expensive, Heavy
David Recommends This Yamaha Product
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Gerald B.
Middleburg, PA
Purchased from Power Equipment Direct
Purchased 8/14/13
Total Helpful Votes
13 Helpful Votes
5 out of 55 out of 55 out of 55 out of 55 out of 5
Hunting Camp Power Supply
I purchased the Yamaha generator for the familys RV when using on our hunting grounds. Nice and quiet and you can't beat the quilaity of Yamaha.
Pros: Durable, Easy To Use, Quiet, Reliable
Cons: Expensive
Gerald Recommends This Yamaha Product
Gerald Would Recommend Power Equipment Direct To A Friend
Web Site


"What a great company, my order was processed and delivered in just a few days. Your customer service department is fantastic. I will definetely recommend Electric Generators Direct to anyone interested in your products."
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  • Standard Rates to Alaska, Hawaii
We currently CANNOT ship this product to Canada or any destination outside of the United States
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  • $50 Service Charge
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  • Requires Special Hydraulic Lift
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Buy Yamaha EF6300iSDE - 5500 Watt Electric Start Inverter Generator at Power Equipment Direct. Read portable generator reviews and portable generator articles. Wide Selection of portable generator accessories available, including Yamaha Yamalube 10W40 Engine Oil (1 Quart), Reliance Controls Freeze/Flood/Power Failure Monitoring System & Dialer and Reliance Controls 30-Amp (120/240V 1-Circuit) Outdoor Transfer Switch.

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