All GeneratorsDealsCompareMy PicksGenerator Finder
All GeneratorsDealsCompareMy PicksGenerator Finder
  • Guides
  • Blog
  • FAQ
  • Rankings

Helping you find the right generator for your needs with objective specs and clear comparisons.

Categories

  • Quiet Generators
  • Inverter Generators
  • Dual-Fuel
  • Home Backup
  • Portable
  • All Brands

Resources

  • Rankings
  • Compare Generators
  • Generator Finder
  • Deals
  • Buying Guides
  • Blog
  • FAQ
  • About Us

Legal

  • Terms of Service
  • Privacy Policy
  • DMCA
  • Disclosures

Disclosure

RightGenerator is reader-supported. When you buy through links on our site, we may earn an affiliate commission at no cost to you.

© 2026 RightGenerator. All rights reserved.

Compare Generators Side-by-Side

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

  • Briggs & Stratton 30737
  • Ryobi RY906500S
  • No image
    Model 30737

    Briggs & Stratton 5,000W Gas Generator

    5000W
    Running
    0 dB
    Noise
    View details
  • Model RY906500S
    Model RY906500S

    Ryobi 6,500W Gas Generator

    6500W
    Running
    72 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
SpecificationBriggs & Stratton 30737Ryobi RY906500S
General
Product type
Generator
Generator
Fuel
Gasoline
Gasoline
InverterNoNo
Parallel capableNoNo
RV readyNoNo
Running watts
5000 W
Winner: Winner: 6500 W
Starting watts
6250 W
Winner: Winner: 8125 W
Noise (lower limit)
0 dB
Winner: Winner: 72 dB
Weight
Winner: Winner: 184 lbs
195 lbs
Run time @50% load
Winner: Winner: 12 h
10 h
Run time @25% load
Not available—
Not available—
Fuel tank
7.5 gal
6 gal
Fuel gaugeYesNo
Approx. dimensions (L × W × H)
29 x 26 x 27
39 x 29 x 24.5
Electrical
Voltage (AC)
120/240
120/240
Voltage (DC)
Not available—
Not available—
GFCI outletsYesYes
Covered outletsYesYes
Automatic Voltage RegulationYesYes
THD
Not available—
20 %
Engine
Engine
Briggs & Stratton PowerBuilt™ OHV 4-stroke
420 cc OHV 4-stroke
Alternator
Not available—
Not available—
Starting system
Recoil
Recoil
Warranty
Warranty
2 years
3 years
Power by fuel
GasolineNot available—Not available—
Running watts
5000 W
6500 W
Starting watts
6250 W
8125 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
12 h
10 h
Run time @25% load
Not available—
Not available—
Other
Data center
Not available—
Not available—
Indicators
false
false
Compliance
N/A
EPA
Security
Not available—
Not available—
Spark arrestorYesYes
Neutral
Not available—
Bonded to frame
UPC
11675307370
46396023483
Core / High-priority specs
Running Watts (Gasoline)
5000
6500
Starting Watts (Gasoline)
6250
8125
Runtime @ 50% Load (Gasoline)
12
10
AC Outlet Types
2x Duplex 120V 20A (5-20R) GFCI 1x Duplex 120V 20A (5-20R) 1x 120/240V 30A (L14-30R)
2x Duplex 120V 20A (5-20R) GFCI1x 120/240V 30A (L14-30R)
Electrical & power
Frequency
60
60
Engine & construction
Engine Type
Briggs & Stratton PowerBuilt™ OHV 4-stroke
OHV 4-stroke
Engine Displacement
389
420
Runtime & fuel system
Runtime @ 50% Load (Gasoline)
12
10
Safety & compliance
Overload Protection System
Low oil and overload protection
Low oil and overload protection, CO monitoring
Low Oil ProtectionYesYes
Carbon Monoxide MonitoringYesYes
Included equipment
Included Accessories
Oil and wheel kit
Oil, tool kit, and wheel kit
Warranty & identification
Commercial Warranty
Not available—
3
Additional specs
Summary
The Briggs & Stratton 30737 is a 5000-watt gasoline generator built for homeowners and job site operators who need extended runtime without constant refueling. With 5000 running watts and 6250 peak watts, this unit can power a refrigerator, multiple lights, and power tools simultaneously, making it suitable for emergency backup or outdoor work. The 7.5-gallon fuel tank delivers 12 hours of runtime at half load, which means a full day of operation before refueling becomes necessary. This is a stationary-duty machine. At 184 pounds, it requires wheels or multiple people to move, so placement matters before startup.
The Ryobi RY906500S is a 6,500-watt gasoline-powered portable generator equipped with a CO shutdown sensor for enhanced safety. It features a 6-gallon fuel tank providing up to 10 hours of runtime at 50% load, and includes multiple outlets for versatile power needs.
  • Most Powerful
    Ryobi RY906500S
    6500W running
  • Quietest
    Ryobi RY906500S
    72 dB
  • Longest Runtime
    Briggs & Stratton 30737
    12h at 50% load
Where to buy
Prices can change. We update these automatically.
Briggs & Stratton 30737
Store links
No links yet.
Ryobi RY906500S
Store links
No links yet.
Disclosure: Some links may be affiliate links. Specs and comparisons are never hidden.