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Select up to 4 generators to compare specs, power output, noise levels, runtime and more. Your compare URL is shareable.

  • Ryobi RY904500
  • Yamaha EF4500iSE
  • Model RY904500
    Model RY904500

    Ryobi 3,600W Gas Generator

    3600W
    Running
    82 dB
    Noise
    View details
  • Model EF4500iSE
    Model EF4500iSE

    Yamaha 4,000W Gas Generator

    4000W
    Running
    58 dB
    Noise
    View details
Quick charts
Each chart uses its own Y-axis scale (so numbers are comparable within a chart).
Running watts
W
Starting watts
W
Noise
dB
Runtime @50%
h
Running watts by fuel
Shows how output changes across gasoline/propane/natural gas (when available).
Generator Specifications Comparison
SpecificationRyobi RY904500Yamaha EF4500iSE
General
Product type
Generator
Generator
Fuel
Gasoline
Gasoline
InverterNoYes
Parallel capableNoNo
RV readyYesNo
Running watts
3600 W
Winner: Winner: 4000 W
Starting watts
Winner: Winner: 4500 W
Winner: Winner: 4500 W
Noise (lower limit)
82 dB
Winner: Winner: 58 dB
Weight
Winner: Winner: 115 lbs
209 lbs
Run time @50% load
Winner: Winner: 10 h
Not available
Run time @25% load
Not available
15.2 h
Fuel tank
4 gal
4.5 gal
Fuel gaugeNoYes
Approx. dimensions (L × W × H)
24 x 26 x 20
30.7 x 24.3 x 27.2
Electrical
Voltage (AC)
120
120
Voltage (DC)
Not available
Not available
GFCI outletsNoNo
Covered outletsYesNo
Automatic Voltage RegulationYesYes
THD
Not available
3 %
Engine
Engine
212 cc OHV 4-stroke
Yamaha MZ360 OHV 4-stroke
Alternator
Not available
Not available
Starting system
Recoil
Electric
Warranty
Warranty
3 years
3 years
Power by fuel
GasolineNot availableNot available
Running watts
3600 W
4000 W
Starting watts
4500 W
4500 W
Running amps (120V)
Not available
Not available
Running amps (240V)
Not available
Not available
Peak amps (120V)
Not available
Not available
Peak amps (240V)
Not available
Not available
Run time @50% load
10 h
Not available
Run time @25% load
Not available
15.2 h
Other
Data center
Not available
Not available
Indicators
false
true
Compliance
EPA
CARB, EPA
Security
Not available
Not available
Spark arrestorYesYes
Neutral
Not available
Floating
UPC
46396056023
765053833196
Core / High-priority specs
Running Watts (Gasoline)
3600
4000
Starting Watts (Gasoline)
4500
4500
Runtime @ 50% Load (Gasoline)
10
Not available
Runtime @ 25% Load (Gasoline)
Not available
15.2
AC Outlet Types
2x Duplex 120V 20A (5-20R) 1x 120V 30A (TT-30R)
1x Duplex 120V 20A (5-20R)1x 120V 30A (L5-30R)
Electrical & power
Frequency
60
60
Engine & construction
Engine Type
OHV 4-stroke
OHV 4-stroke
Engine Displacement
212
357
Runtime & fuel system
Runtime @ 25% Load (Gasoline)
Not available
15.2
Runtime @ 50% Load (Gasoline)
10
Not available
Safety & compliance
Overload Protection System
Low oil and overload protection
Low oil and overload protection, CO monitoring
Low Oil ProtectionNoYes
Carbon Monoxide MonitoringYesYes
Included equipment
Included Accessories
Oil and wheel kit
Battery
Warranty & identification
Part Number
Not available
EF45ISEZ
Additional specs
Summary
The Ryobi RY904500 is a 3600-watt portable gasoline generator, delivering 4500 starting watts. It features a 212cc OHV engine, a 4-gallon fuel tank providing up to 10 hours of runtime at 50% load, and is RV-ready with a 120V 30A RV outlet.
The Yamaha EF4500iSE is a 4500-watt inverter generator designed for maximum efficiency and minimal noise, suitable for emergency backup, recreational use, and DIY projects.
  • Most Powerful
    Yamaha EF4500iSE
    4000W running
  • Quietest
    Yamaha EF4500iSE
    58 dB
  • Longest Runtime
    Ryobi RY904500
    10h at 50% load
Where to buy
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Ryobi RY904500
Store links
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Yamaha EF4500iSE
Store links
No links yet.
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