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2019 Yamaha EF4500iSE





Maximum Efficiency ‑ Minimum Noise.

The powerful engine allows this inverter to run at very low engine speed, reducing fuel consumption, noise, vibration and wear.

Top Features
  • The EF4500iSE picks up where our extremely successful EF3000iSEB leaves off, with even more power and fuel efficiency in a quiet, portable package. Designed for maximum fuel efficiency and minimum noise, its super-powerful engine allows it to run at the very low engine speed of just 2600 rpm - 1000 rpm lower than other generators it its class.
  • That slow engine speed pays off big time in reduced fuel consumption as well as less noise, vibration, and engine wear. Up to 15.2 hours run time ant 1/4 rated load.
  • The EF4500iSE features Noise Block sound reduction system which makes it a very quiet generator for its output. 58-60 decibels.
  • 4500 watt maximum output, 4000 watt rated continuous output suitable for running most 15,000 BTU RV air conditioners and 1000 watt microwave oven, or two major RV appliances, simultaneously.
  • Electric start makes starting effortless-turn the key to start and power appliances you want and you can add an optional wireless remote control for easier starting.
  • Yamaha's Oil Watch Warning System helps prevent engine damage from low oil and provides added peace of mind.
Features Features
  • 4500 watt maximum output, 4000 watt rated continuous output: —Suitable for running most 15,000 BTU RV air conditioners and 1000 watt microwave oven, or two major RV appliances simultaneously.
  • Noise Block sound reduction system: — Very quiet 58-60 decibels
  • Up to 15.2 hours running time: at one quarter rated load between refueling
  • Low speed running: — Using the most powerful engine in its class to run at a constant ultra low speed of 2600 rpm to reduce gasoline consumption, extend running time between refueling and reduce noise and engine wear
  • 50 state legal: — Meets CARB emission regulations and given highest EPA rating
  • Pulse Width Modulation Inverter System: — Sine wave as clean as or cleaner than household electricity. Suitable for computers, televisions, satellite TV systems and other sensitive electronic equipment and appliances
  • Optional wireless remote control: — Start and stop the generator from up to 66 feet away
  • Electric start: — Effortless turn the key to start
  • Automatic choke: — Easy starting even in cold climates
  • Low oil warning system: — Shuts the engine off to protect the engine if the oil level drops
  • Power meter: — Easy to read meter indicates the amount of power being used and the amount that's available
  • Hour meter: — Displays the amount of running time accumulated to indicate servicing or refueling interval
  • Twin bar: — Aids in lifting and loading. Also utilize for transport and anti-theft security
  • Gas gauge: — Indicates amount of gasoline to indicate refueling interval
  • Factory warranty: — Covers the entire generator for defects in parts and workmanship for three (3) years
  • Stylish design: — Attractive and practical
  • Four wheels with parking brake: — Easy transport and security
  • Type: Brushless, Inverter
  • Maximum AC Output: 4500 watts
  • Rated AC Output: 4000 watts
  • Rated / Maximum AC Current: 33.3 / 37.5 amps @ 120V
  • Engine: OHV, air-cooled, single cylinder, 4-stroke
  • Displacement: 357cc
  • L x W x H: 30.7 x 24.3 x 27.2 in.
  • Dry Weight: 194 lb.
  • Fuel Tank Capacity: 4.5 gal
  • Continuous Operation at 1/4 Rated Load: 15.2 hr
  • Noise Level (1/4 Load - Rated Load): 58-60 dBA
  • Warranty: 3 Years Limited Warranty
Price and specifications subject to change without notice. Please read your Owner's Manual and the product warning labels before operation.



Engine Type
OHV, air-cooled, single cylinder, 4-stroke


30.7 in.
24.3 in.
27.2 in.
194 lb.


AC Output
Fuel Tank Capacity
4.5 gal
Noise Level
58-60 dBA
Run Time
15.2 hr

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