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Durostar > 
Item#: 9SIA05F0590383

DuroStar DS4000S 4000-Watt 7.0 HP Air-Cooled OHV Portable RV Gas Engine Generator

  • Generators

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  • Overview
  • Specifications
  • Warranty & Returns
  • Reviews

The DuroStar DS4000S Features:
• Durable DuroStar 7.0 Hp, air cooled OHV engine w/ low oil shutoff
• Heavy duty steel frame with four point fully isolated motor mounts for smooth and quiet operation
• Full power panel with oil warning light, volt meter, circuit breaker and power outlets

• Power Plug Configuration
• (2) - 120 Volt, 20 Amp, 60 Hz - NEMA 5-20R Outlets
• (1) - 120 Volt, 30 Amp, 60 Hz - NEMA L5-30 Outlet
• Run-Time [@ 50% Maximum Output]: 8.0 hrs
• Low oil shut-off protects engine
• Super quiet muffler reduces engine noise
• Max AC Output: 4000 Watts
• Rated AC Output: 3300 Watts

Technical Details:
• Engine Type: 4-Stroke OHV Single Cylinder With Forced Air Cooling System
• Ignition System: Non-Contact Transistor
• Displacement: 208CC
• Starting Type: Recoil
• Fuel Tank Capacity: 4 Gallons
• Noise Level: 69 dB

• DuroStar DS4000S 4,000 Watt Portable Generator
• Tool Kit
• Operating Manual

Learn more about the Durostar DS4000S


Selling Unit




Hrs of Run Time
8 hours
Running Wattage Range
3001 to 5000
Gas Tank Size
Engine Type


Warranty, Returns, And Additional Information

Customer Reviews of the Durostar DS4000S

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  • debashis b.
  • 8/12/2014 2:13:39 PM
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsGreat generator

Pros: We had big storm , power went out for 3 days. Ran 8 hours constantly. Once it ran out of gas stops which I like very much. Connected Refrigerator, microwave, light, computers no problem. When I ran sump pump , I have to disconnect Microwave , can't take that much of load. I was thinking of going for a sump pump battery backup system. But eventually gave up and bought this generator. Just keep feeling gas and once in a while oil this beast keep you going. Overall I am extremely happy with the price I got less than $300.00 with free shipping no dent new product during Dec 14. Can't beat that deal

Cons: Should have come with wheels. We had old hand truck . Let it sit on it in garage . When required we pull it out to our back padio and run.

Other Thoughts: It should come with wheels , for that charging few extra bucks should be considered.

Did you find this review helpful? Yes No

  • Anonymous
  • 6/13/2013 10:08:02 PM
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsAWESOME !!!!

Pros: This thing is awesome , I used it for the first time yesterday because of the storms we've been having here in West Virginia for the last 2 days knocked out the power , I plugged in the refrigerator ,deep freezer , 3 flat screen TVs , 2 computers with router & a box fan ,, it ran perfect with no problems & I'm going to order another here in a few days


Other Thoughts: I would recommend this to anyone

5 out of 5 people found this review helpful. Did you? Yes No

  • Marc L.
  • 11/12/2012 4:49:44 AM
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsSaved Me During Hurricane Sandy

Pros: Started on first pull every time
Relatively quiet
Plenty of power
Great run time on a tank of gas
Price (paid $220)

Cons: Filling oil

Other Thoughts: Two weeks without power after Hurricane Sandy. This generator was used every day and ran my fridge, TV, Xbox, furnace and lights. It sips gas and by running it only when needed I could go over 2 days on a tank of gas. It started every time on the first pull. A great deal over the summer at $220. My friends ended up returning their generators to Lowes and Costco when the broke down after a few days of use.

8 out of 8 people found this review helpful. Did you? Yes No

  • James K.
  • 8/16/2012 2:41:42 PM
  • Ownership: less than 1 day
  • Verified Owner

1 out of 5 eggsNot New.. Used Product

Pros: None

Cons: I can’t believe they sent me a USED generator. When I opened up the box oil was EVERYWARE!!! On top of that the seller support sent me to a voice mail after I told them I was sent a used generator. I would not trust this seller though Newegg. Not Newegg’s fault. It’s the seller.

5 out of 13 people found this review helpful. Did you? Yes No

  • Richard B.
  • 7/28/2012 5:55:57 AM
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggs

Pros: Fast shipping, Starts on 1st pull , Great Value

Cons: none

0 out of 3 people found this review helpful. Did you? Yes No

  • Mark V.
  • 7/27/2012 7:16:03 PM
  • Ownership: 1 week to 1 month
  • Verified Owner

4 out of 5 eggsI'm power READY!

Pros: Started on first pull for my young helper and then surprisingly for me a old fart with floppy biceps! It handled the test load of two small ceramic heaters one at half power and one full ... approx 2500 watts from adding the two "Kill-a-Watt" meter reading measured at the heater end of a 25' 10 gauge extension 5-30 plug to 3ea standard 115v standard plug end. It looks good and manual is good too.

Cons: The single page "Unpacking Instructions" was for a different generator. It called for 1 quart of 30wt oil WHICH IS WRONG! Manual says 20oz of 10-30wt. This page also mentions a battery for starting, but this DS4000S is a pull start. Shipping bracket bolts were WAY to tight and REQUIRED a socket and small breaker bar to loosen.

Other Thoughts: After purchase but before receiving I searched net for reviews and found mention of the problems indicated in my "Cons" so I was ready for them. The generator is for standby in case of power failure. I filled the tank and added a gas stabilizer that is supposed to last for a year which I did because years ago a motorcycle I'd stored with half a tank developed rust inside from condensation. I found a large plastic garbage bag makes a snug fit dust cover. Mine's stored on a deck so has breathing room underneath.

8 out of 10 people found this review helpful. Did you? Yes No

  • Mark V.
  • 7/18/2012 2:37:04 PM
  • Ownership: less than 1 day
  • Verified Owner

4 out of 5 eggsStarted on First Pull

Pros: GREAT on special price. I'm overall very impressed with it's build quality. Looks good and seems well made. Started on the first pull. Easily handled the test load of two small portable ceramic heaters (approx 3000 watts) attached via it's l5-30 plug and a Coleman 25' extension cord. The manual is very good and a spark plug wrench included.

Cons: The bolts holding the shipping bracket were VERY tight. Too tight for open end wrench. They required a socket and short breaker bar to safely loosen. DO NOT try to get 'em off with the cheap wrenches included.

Other Thoughts: The engine's oil fill and drain are awkward to access. For first fill we tipped it 45 degrees so oil from the funnel would go downhill into the opening. To drain I'll get some help to lift and hold it waist high since my old man joints don't bend well. Be able then to channel old oil into a container and use a funnel with a tube

6 out of 7 people found this review helpful. Did you? Yes No

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