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Yamaha EF5500DE 5,500 Watt Portable Generator w/ CO Sensor

Model: EF5500DE  |  Item Number: EF55DEZ1
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Reg. Price: $2,699.00 $2,569.00
CARB Compliant Power Equipment

Estimated Ship Date for New Orders: 7/27/2024

Features for the Yamaha EF5500DE

Comes standard with wheels, fold-down/locking handles and battery.

Digital Hour Meter, Digital Voltmeter displays total run time accumulation for servicing and indicates the voltage output.

Lifting eye convenient for hoisting and security.

OHV engine offers efficiency, increased reliability, and quieter operation.

Full power, full time 120/240 dual voltage is ideal for higher voltage requirements.

Ground Fault Circuit Interruption (GFCI) senses a leak to ground to reduce risk of electric shock.

Fuel gauge provides easy monitoring of fuel level.

The EF5500DE features a rugged design with full roll cage protection for heavy jobs.

CO Sensor: Engine shuts off if a high level of carbon monoxide is detected.

Reduced price, more wattage: Great value with the same legendary quality and performance.

Eight hours run time at full load: 13% longer run time than previous model.

New and improved OHV MZ360 engine with a hemispherical head: Yamaha legendary durability and reliability.

Rugged Wheel kit w/fold-down locking handles: Standard on the EF5500DE.

The battery is standard on the EF5500DE: Wheel kit and Battery are a great value and offer added convenience for transport and starting

Cast iron cylinder lining: Optimal heat dissipation.

Automatic oil warning system shuts off engine before oil level is low: Prevents engine damage, avoids costly repairs, minimizes down time, enhances long term durability.

Transistorized ignition provides lean, efficient spark: Maintenance-free and ensures fast, easy starting, reliable operation.

Auto decompression: Automatically “opens” exhaust valve to reduce compression for easier starting.

EPA Emission Engine Life Rating: The EF5500DE meets the strictest environmental standards - EPA and CARB.

Ground Fault Interrupter (G.F.I.): If the system senses a leak to “ground,” it automatically cuts off power to help prevent injuries.

Fuel gauge: Lets operator monitor how much fuel is left.



Model / Model Code: EF5500DE

Size and Weight

Dimensions (length/width/height): 29.1" x 28.4" x 31.5"

Dry Weight: 243.7 lbs.


Engine Type: OHV

Displacement: 358cc

Fuel Tank

Capacity: 6.9 Gallons

Fuel Type

Unleaded Regular: Cooling System

Cooling Type: Air Cooled


Type: Brushless

Maximum AC Output: 5500 Watts

Rated AC Output: 4500 Watts

Rated AC Current / Max AC Current: 36.0 amps /44.0 amps @120V | 18.75 amps/22.9 amps @ 240V

Noise Level: 74.1 dBA

Continuous Operation at Rated Load: 9.0 Hrs.

This product may contain chemicals known to the State of California to cause cancer, birth defects and other reproductive harm. For more information, go to

Technical Specs for the Yamaha EF5500DE*

* These Technical Specs are provided by the manufacturer at the beginning of the model year. Please be aware that the manufacturer may decide to change these specs at any given time without notice.

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