DuroStar DS4000S 4000-Watt 7-Hp Air Cooled OHV Gas Engine Portable RV Generator


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Condition: New
SKU: DS4000S

The DuroStar DS4000S 4,000 Watt Generator is designed by the professional, for the professional. It features a Fully Loaded Power Panel that is the main control center for the Generator. The Power Panel also has the Engine Shutoff switch, Volt Meter, and Circuit Breakers. These units are EPA approved for safe use in U.S. National Parks and mandated Jobsites. The Powerful 7 HP Durostar Engine is Air Cooled and can withstand use and abuse. This Generator has everything a Great Generator needs, but at a price that everybody wants. This DuroStar Workhorse can operate anything from Air Compressors, Air Conditioners to Basic Home Power (lights and fridge). The DS4000S is a tried and true piece of equipment. It is well worth it's weight in gold; as soon as the box is opened you will be amazed at the amount of thought and science that was put into designing this unit. No corners have been cut in the manufacturing or assembly of these units. The DuroStar DS4000S unit features a 7 Horsepower, Air Cooled Engine and is designed with a Low-Oil Shutoff Sensor to protect the Motor. Built to offer more power and longer lasting durability, The DuroStar DS4000S Generator has a Cast-Ironed Sleeved, 208cc Engine rated at 7 HP delivering a peak of 4,000 surge watts / 3,300 Constant. This is a sufficient amount of power that can handle an overhead Air Conditioner in a RV to basic house power. Designed for Safe and Easy Operation, the DS4000S features a user-friendly, Recoil Start, that's easier than starting a lawn mower. The attached oversized noise reducing Muffler has a built-in Spark Arrestor for safe use in mandated camping areas and jobsites. This unit can be tossed around on the jobsite or truck mounted for maximum security. All DuroStar Generators are user friendly and are ready to use out of the box within minutes. Simply remove all packaging, add Oil and Gas and it is ready to begin producing power.

Key Features
  • Power Boost Technology

    Double the 120V power for applications and RV's

  • Surge-Arrest

    Protects your generator from power surges

  • All Metal Construction

    Built tough to last even on the toughest job sites

  • Extended Runtime

    Up to 8 hours on a full tank of gasoline

  • Powerful 7 HP Engine is able to accept high wattage loads with ease.
  • This Generator has endless uses; from Home Standby Power, Jobsites to a Weekend with the RV.
  • Equipped with Low Oil Protection, AC and DC Regulators, and a Spark Arrestor, Your unit will remain safe and in top operating condition. Ease Of Use: This unit was designed to allow anyone to start and operate.
  • Simply use the E-Z 1-Pull Recoil Cord to start the Generator.
  • Our Friendly Technicians know these units inside and out. Have a Technical Question? Give them a call and they will be glad to help you out.
  • Heavy duty frame with four point fully isolated motor mounts for smooth quiet operation.
  • Full power panel with oil warning light, volt meter, circuit breaker and power outlets.
  • Run-Time [ @ 50% Maximum Output ]: 8.0 hrs.
  • Low oil shut-off protects engine.
  • Quiet Muffler reduces engine noise.
  • Full EPA and CARB Compliance allows for operation in all 50 States.

Sku DS4000S
Brand DuroStar
Max AC Output 4,000 Watts
Rated AC Output 3,300 Watts
Fuel Tank Capacity 4 Gallons
Engine 7Hp DuroStar Air Cooled OHV Engine
Low Oil lamp/Shutoff Yes
Start Type Recoil
Spark Arrestor Yes
Run Time @ 50% Maximum Output Up to 8 Hours at 1/2 Load
EPA Approved EPA and CARB Compliance/50-State Status
Current 120v
Amperage 33A/16A
Decibels 69 dB(A)
Horsepower 7 Hp
Torque 9.7 ft-lbs
Engine Displacement 208cc

Easy Out of Box Operation & Peace of Mind.
All DuroStar Generators all carry a 1 Year Factory Warranty so if for any reason your generator gives you problems simply let us know and we will do our best to make it right. As always DuroStar offers its 30 Day Satisfaction Guarantee standard on every item we sell. All DuroStar Generators are ready to use out of the box within minutes. Simply remove all packaging, add Oil and Gas and it is ready to begin producing power.

Available Outlets

120v 30A Twist Lock Outlet

120v 20A Standard Outlet

What's in The Box
  • DuroStar DS4000S Recoil Start Generator.
  • Generator Tool Kit.
  • Owner's Manual.
  • 3-Year Residential Limited Factory Warranty.
  • 1-Year Commercial Limited Factory Warranty.
  • 30 Day Satisfaction Guaranteed.

Customer Reviews

Based on 56 reviews

Great product .loved

Great generator

I am very happy with my purchase. The box was a little beat up, but that's not the shippers fault. I fired it up right when I received it, and just like it was advertised, Very Quite.
Great deal!

Best Item We Have Bought

This generator has helped & saved us in so many ways already.

Nice cool unit!!!

I bought this generator after reading the reviews on the duromax generators. I recieved the generator in 4 or 5 days after i ordered it. I was impressed with the packing and the clean detail look of the unit. I was really impressed when it started on one pull. I ran my shopsmith with it and it didn't even miss a beat. Real smooth and quiet. I like it!!!

I like smaller generators

Big generators are fine, if you have lots of gas to keep them running. I like smaller generators that use less gas. I have a 2 stroke 1000W that runs a full sized fridge and a few low energy lights. I wanted another generator as a backup and to run some larger items, especially a pump motor. I also bought the wheel kit and cover as the generator will be stored outside.

Put the wheel kit on immediately before you add gas and oil, because the directions tell you to turn the generator upside down to do the installation. Make sure you know where the handle will bolt on so you know to put the wheels on the opposite side. The bolt holes line up on both sides and I had to reverse the wheels which took some extra time. The hardest part was taking off the rubber feet. Otherwise it is an easy installation of the wheels and handle.

Next I added the oil and about a quart of gas. The generator started easily once I felt around and found the choke lever. It runs quiet, and with little vibration. It powered several items that took about 2500W with no issues. There is a bit of an odor coming from the muffler as heat burns off some oil left over from the manufacturing process.

The cover is a nice fit and the unit rolls very easily on the wheels. Without the wheels I'd say it is a two man operation to move the generator comfortably. One strong guy can handle moving it, but the position is awkward and risks back injury.

My generator shipped cross country (from CA to PA) and the box arrived in good shape. It just took a few days to make the trip. Free shipping makes a good deal into a super deal.