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Cummins Onan RV QG4000 EVAP - 4.0kW RV Generator (Gasoline) EVAP Model

Cummins Onan Electric Generators and Accessories
Model: RV QG 4000 2
(Based on expert analysis, manufacturer ratings and customer reviews)
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5
2 Reviews
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Ships in 4-7 Business Days

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Run Watts
Rated Watts
120 Single-Phase

Product Video Disclaimer: "PED is not responsible for any variances from the product in this video and the item you purchase. Please review all product specs prior to purchase."

4.0 kW Gasoline Powered RV Generator EVAP (Model 6747)
Enough power to run a 15,000 BTU AC (30A 1-Pole Breaker)

Designed For Use With Multiple Applications
Fifth wheels, travel and sport utility trailers

Cummins Onan 4-Cycle OHV Engine
Provides quiet operation w/ excellent fuel efficiency

Microprocessor Controlled
Digital voltage regulator prevents damaging voltage spikes
Provides added protection from overloads and faults

Sound-Attenuating Enclosure
Lowers noise levels while providing cross-flow cooling

Control Panel w/ LED Status Indicator Light
Start-Stop/Prime rocker switch
Provides gen-set diagnostics

USDA Forest Service Approved Spark Arrestor Muffler
Enclosed design, reduces noise levels

Added Features
Magnetic circuit breaker & fused DC circuits (to protect wiring)
125" Generator set output leads

Meets CARB Tier 3 and EPA Phase 3 Standards
Engine Brand
Cummins Onan
Starting System
12-Volt Button Start
304 CC
Engine RPM
3600 RPM
Product Specs
120 Single-Phase
60 Hertz
Auto Voltage Regulation
Rated Watts
4000 Watts
Fuel Type
Rated Amps
33 @ 120 Volts (Single Phase) Amps
Min. Air Outlet - Bottom
9.6" x 3.8"
Min. Air Inlet - Front
7.2" x 5.1"
Grade Type
172 Pounds
Product Style
RV Generator
Product Length
30.0 Inches
Product Width
19.7 Inches
Product Height
14.4 Inches
Consumer Warranty
2 Years
RV QG 4000 2
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  1 Question
Q: What is the difference between EVAP model and none EVAP model generators?
by Jim from Missouri on October 22, 2012

A: The EVAP models meet the Jan US EPA, as well, as California Air Resources Board (CARB) which are requiring that most small, off-road engines less than 25 hp installed in "towable" RV and towable utility applications meet fuel system evaporative emission standards.

* Evaporative spec: For trailer applications required to meet Tier III Evaporative Emissions of the California Air Resources Board.

by Mike, Product Expert
Cummins Onan RV QG 4000 2 Reviews & Ratings
2 Reviews  Sort by 
Danny B.
Bradenton, FL
Purchased from Electric Generators Direct
Purchased 5/11/15
5 out of 55 out of 55 out of 55 out of 55 out of 5
Good Genrator, Bad Installation Instructions
The generator runs perfect, just the same as the one we had in 07. However, this time I installed it myself. The installation instructions seemed as if they were not written for my model. There was not a cutout template for making the cutouts in the floor of my RV. This put making the template for cut outs on me. It is impossible to make an accurate template as some of the holes are not accessible from the top even with the cover removed. Other than the cutouts, everything went well. I... more
Danny Recommends This Cummins Onan Product
Manufacturer Response
Brand Rep
Thank you for the review. We are happy to hear you enjoy your generator and the positive ordering experience. Large scale drawings/templates are available from your Onan Dealer. This is referenced On page 10 of the install manual under "typical genset." Page numbers in the manuals differ slightly based upon the generator spec you have.
We appreciate your business.
Danny's Experience With Electric Generators Direct
Web Site


"Purchasing was simple and delivery was fast. Installation manual is poor."
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James C.
Brundidge, AL
Purchased from Electric Generators Direct
Purchased 7/27/15
5 out of 55 out of 55 out of 55 out of 55 out of 5
Great Purchase And Great Support
I purchased this product to replace an identical model in my Toy Hauler that had just worn out over time. Trust me when I say I shopped around. I e-mailed and called a lot of dealers and web sites for quotes and information. The price here was the best. The generator arrived quickly and as promised. I had a few questions after it arrived and prior to install. I contacted support and Jared was very helpful in getting me the answers to my questions. Installation / swap out was a breeze. I would... more
James Recommends This Cummins Onan Product
James's Experience With Electric Generators Direct
Web Site


"I want to give a "Shout Out" to Jared for his after purchase support."
Was this review helpful?
Free Freight
  • Ships via Semi-Truck
  • Curb Side Delivery
  • Free to Lower 48 States
We currently CANNOT ship this product to Alaska, California, Hawaii, Indiana, North Dakota, Wisconsin or any destination outside of the United States
Lift Gate Services
  • Safely Lowers Products Off the Truck
  • Requires Special Hydraulic Lift
  • Free Lift Gate
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