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

  • Sportsman GEN4000-SS
  • Yamaha EF5500D
  • Model GEN4000-SS
    Model GEN4000-SS

    Sportsman 3,500W Gas Generator

    3500W
    Running
    69 dB
    Noise
    View details
  • Model EF5500D
    Model EF5500D

    Yamaha 4,500W Gas Generator

    4500W
    Running
    74.1 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
SpecificationSportsman GEN4000-SSYamaha EF5500D
General
Product type
Generator
Generator
Fuel
Gasoline
Gasoline
InverterNoNo
Parallel capableNoNo
RV readyYesNo
Running watts
3500 W
Winner: Winner: 4500 W
Starting watts
4000 W
Winner: Winner: 5500 W
Noise (lower limit)
Winner: Winner: 69 dB
74.1 dB
Weight
Winner: Winner: 91 lbs
216.1 lbs
Run time @50% load
10 h
Winner: Winner: 13.5 h
Run time @25% load
Not available
Not available
Fuel tank
3.9 gal
6.9 gal
Fuel gaugeNoYes
Approx. dimensions (L × W × H)
23 x 19.5 x 17.5
29.1 x 29 x 31.5 in
Electrical
Voltage (AC)
120
120/240V 60 Hz
Voltage (DC)
12
Not available
GFCI outletsNoYes
Covered outletsNoNo
Automatic Voltage RegulationYesYes
THD
Not available
Not available
Engine
Engine
212 cc OHV 4-stroke
Yamaha MZ360 OHV 4-stroke
Alternator
Not available
Not available
Starting system
Recoil
Recoil
Warranty
Warranty
1 years
3 years
Power by fuel
GasolineNot availableNot available
Running watts
3500 W
4500 W
Starting watts
4000 W
5500 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
13.5 h
Run time @25% load
Not available
Not available
Other
Data center
Not available
Not available
Indicators
false
true
Compliance
EPA
CARB, EPA
Security
Not available
Not available
Spark arrestorYesYes
Neutral
Not available
true
UPC
27077082470
Not available
Core / High-priority specs
Running Watts (Gasoline)
3500
4500
Starting Watts (Gasoline)
4000
5500
Runtime @ 50% Load (Gasoline)
10
13.5
AC Outlet Types
2x Duplex 120V 20A (5-20R)1x 120V 30A (TT-30R)
2x Duplex 120V 20A (5-20R) GFCI; 1x 120V 30A (L5-30R); 1x 120/240V 30A (L14-30R)
Electrical & power
Frequency
60
60
Engine & construction
Engine Type
OHV 4-stroke
OHV 4-stroke
Engine Displacement
212
358
Engine Oil Type
SAE10W-30
Not available
Runtime & fuel system
Runtime @ 50% Load (Gasoline)
10
13.5
Safety & compliance
Overload Protection System
Low oil and overload protection
Not available
Low Oil ProtectionYesYes
Carbon Monoxide MonitoringNoYes
Included equipment
Mobility Components
Not available
Yes
Starting Components
Recoil
Not available
Included Accessories
Funnel, tool kit, and battery charging cables
Tool kit and wheel kit
Warranty & identification
Part Number
Not available
EF55DZ1
Additional specs
Summary
The Sportsman GEN4000-SS is a gasoline-powered generator offering 4000 surge watts and 3500 running watts, suitable for running RVs, household appliances, and power tools.
The Yamaha EF5500D is a 5500-watt generator designed for emergency backup, recreational use, and DIY projects. It features a 358cc OHV engine, dual voltage output, and offers up to 9 hours of continuous operation at rated load.
  • Most Powerful
    Yamaha EF5500D
    4500W running
  • Quietest
    Sportsman GEN4000-SS
    69 dB
  • Longest Runtime
    Yamaha EF5500D
    13.5h at 50% load
Where to buy
Prices can change. We update these automatically.
Sportsman GEN4000-SS
Store links
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Yamaha EF5500D
Store links
No links yet.
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