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Introducing the all-new EF4500iSE inverter from Yamaha. This mid-size portable generator falls into our line-up just after our very successful EF3000iSEB and comes packed with even more power and fuel efficiency in a quiet, portable package. The EF4500iSE was designed for maximum fuel efficiency and minimum noise, qualities which make it the ultimate RV accessory. Housing the most powerful engine in its class allows our biggest inverter to run at the very low engine speed of just 2600 rpm - 1000 rpm lower than other generators in its class. The slow engine speed translates into reduced fuel consumption as well as less noise, vibration and engine wear. Of course features such as Yamaha's infamous reliability, durability and four-stroke fuel efficiency come standard.

  • Features & Benefits

    • Whisper quiet operation at 58-60 decibels
    • With a maximum output of 4500 watts and a continuous output of 4000 watts, the EF4500iSE is just what you need for running an RV 15,000 BTU air conditioner and 1000 watt microwave oven, or two other major RV appliances simultaneously
    • Up to 7.4 hours running time at full rated load between refuelling (15.2 hours at 1/4 rated load)
    • Pulse Width Modulation Inverter System produces a sine wave as clean as or cleaner than household electricity, making the EF4500iSE suitable for computers, televisions, satellite TV systems and other sensitive electronic equipment and appliances
    • Electric start serves up effortless turn-key operation
    • Automatic choke makes for easy starting even in cold climates
    • Optional remote control enables start and stop of the generator from a distance

  • Engine Control

    • Low Oil Warning System shuts the engine off to protect the engine if the oil level drops
    • Power Meter is easy to read and 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 refuelling interval
    • Twin Bar frame design gives better grip capabilities to lift and load the EF4500iSE
    • The four-wheel design allows for greater portability and the parking brake helps ensure it won't roll away

Type Inverter
Maximum AC Output (Watts) 4500
Rated AC Output (Watts) 4000
Total Ampere (Rated / Maximum) 33.3 / 37.5 @ 120V
AC Voltage (V) 120
Frequency (Hz) 60
Voltage Regulator Inverter (Pulse Width Modulation)
Neutral Bonded
AC Receptacle * 15A + 15A 125V       30A/125
Type MZ360: 4-stroke, OHV forced air-cooled, single cylinder
Displacement (cm³) 357
Maximum Horsepower 12
Fuel Gasoline
Starting System Electric
L x W x H mm (in) 780 x 616 x 692 (30.7 x 24.3 x 27.2)
Dry Weight 88kg / 194 lb
Fuel Tank Capacity (litres) 17
Operating Hours (@ 1/4 load) 15.2 hours
Operating Hours (@ rated load) 7.4 hours
Noise Level (@ 7 metres) 58-60 dBA
Battery Type Standard (m.f. type)
(NFB) Non-Fuse Circuit Breaker System Yes
Auto Choke Yes
Smart Throttle Yes
Pilot Lamps (AC output) Yes
Warning Lamps (overload / low oil) Yes
Power Meter Yes
Hour Meter Yes
Oil Watch Warning System Yes
Fuel Level Gauge Yes
Silent Type (enclosed design) Yes
Spark Arrestor (muffler) Yes
Instantaneous Less than 20%
Setting Less than 3%
Setting Time Less than 2 sec.
Frequency Stability ± 0.1 Hz
Transportation Wheel Kit 4 wheel standard
Remote Control Starter Optional
Non-Commercial ** 2 years limited

* Refer to Total Ampere specification for maximum available output.
** 2-year warranty on gas-powered generators, for non-commercial use only. See dealer for commercial warranty coverage. Alternate fuel generators and water pump receive one-year warranty (non-commercial use). See dealer for details.