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DuroStar DS4000S 4,000 Watt 7.0 HP OHV 4-Cycle Gas Powered Portable Generator

by DuroStar
4.4 out of 5 stars  See all reviews (181 customer reviews)

List Price: $479.99
Price: $297.99 & FREE Shipping. Details
You Save: $182.00 (38%)
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In Stock.
Ships from and sold by Amazon.com.
Want it Tuesday, May 28? Choose One-Day Shipping at checkout. Details
  • 4000 Watt Surge/3300 watt continuous
  • 4 Gallon gas tank/8 hour run time
  • EZ-Pull recoil start
  • EPA Approved
  • Automatic low oil shut off

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Special Shipping Information: This item cannot be returned to Amazon.com. For additional information concerning this policy, please visit our Product Specific Returns Policy Page.

Frequently Bought Together

DuroStar DS4000S 4,000 Watt 7.0 HP OHV 4-Cycle Gas Powered Portable Generator + DuroStar DS4000S-WK Wheel Kit for DS4000S + Coleman Cable 01915 3-Feet Generator Power Cord Adapter, 10/3 Splitter Y Adapter, L5-30P to (2) Lighted 5-20R
Price for all three: $360.48

Buy the selected items together


Product Details

  • Product Dimensions: 20 x 27 x 22 inches
  • Shipping Weight: 93 pounds (View shipping rates and policies)
  • Shipping: Currently, item can be shipped only within the U.S. and to APO/FPO addresses. For APO/FPO shipments, please check with the manufacturer regarding warranty and support issues.
  • Shipping Advisory: This item must be shipped separately from other items in your order. Additional shipping charges will not apply.
  • ASIN: B004918MO2
  • Item model number: DS4000S
  • Average Customer Review: 4.4 out of 5 stars  See all reviews (181 customer reviews)
  • Amazon Best Sellers Rank: #969 in Patio, Lawn & Garden (See Top 100 in Patio, Lawn & Garden)

Product Description

Amazon.com

Great for camping, RVs, sporting events, home back-up power, job sites, and more, the DuroStar DS4000S gas-powered generator has a 7.0-horsepower air-cooled overhead valve engine with a recoil start that cranks out 3,300 constant running watts of power (and a peak of 4,000 watts; learn more about wattage needs below). This rugged workhorse is ideal for a wide variety of uses from getting you through a power outage to keeping you and your family supplied with all the necessary conveniences of home while being miles from nowhere.

DS4000S panel
Heavy duty steel frame with four-point fully isolated motor mounts (view larger).
DS4000S recoil
Recoil starting (view larger).

Note for California residents: This model is not CARB-compliant. Units sold to California must be CARB-compliant.

The power panel features the main controls, including start switch, volt meter, and circuit breaker. It offers two 120-volt, 20-amp, 3-prong outlets (NEMA 5-20R) to supply power to all of your home appliances, plus one 120-volt, 30-amp outlet (NEMA L5-30) for high-powered tools.

The DS4000S has an 8-hour run time at 1/2 load, and it has a 4-gallon fuel tank that also includes an easily readable gauge. The heavy duty steel frame has four-point fully isolated motor mounts for smooth and quiet operation. Other features include a recoil start, super quiet muffler that reduces engine noise (69 dBA rating), and automatic low-oil shut off to protect the engine. An optional wheel kit is also available for the DS4000S, enabling easy portability. Backed by a 1-year limited warranty.

What's in the Box

DuroStar generator; tool kit; operating instructions


Compare the DuroStar Portable Generators
Model # DS4000S DS4000WGE DS7200 DS7200Q
CARB compliant No No No No
Fuel Gas Gas Diesel Diesel
Arc welding -- Yes -- --
Enclosure Open steel frame Open steel frame Open steel frame Fully enclosed frame
Running watts 3,300 3,500 5,500 5,500
Starting watts 4,000 4,000 6,000 6,000
Engine 7.0 hp air-cooled OHV 16.0 hp air-cooled OHV 186F single-cylinder, 4-cycle, air-cooled 186F single-cylinder, 4-cycle, air-cooled
Starting method Manual Electric/manual Electric/manual plus
wireless remote
Electric/manual plus
wireless remote
Low oil shutdown Yes Yes Yes Yes
Spark arrestor No No Yes Yes
Fuel tank size (gallons) 4.0 7.0 3.83 3.83
Run time
@ 50% load
8 hours 8 hours 12 hours 12 hours
Outlets (2) 120V, 20-amp, 3-prong;
(1) 120-volt, 30-amp twist-lock
(2) 120V, 20-amp, 3-prong;
(1) 120-volt, 30-amp twist-lock
(2) 120V, 20-amp, 3-prong;
(1) 120-volt, 30-amp twist-lock;
(1) 120/240-volt, 30-amp twist-lock
(2) 120V, 20-amp, 3-prong;
(1) 120-volt, 30-amp twist-lock;
(1) 120/240-volt, 30-amp twist-lock
Handle style Optional Flip-up Flip-up None
Wheel type Optional Knobby all-terrain Slick style Built into bottom
Warranty 1-year, limited 1-year, limited 1-year, limited 1-year, limited

 

Your Generator Needs

To determine whether a generator is appropriate for your needs, you need to first add up the wattage of tools, appliances, and motors you want to run at the same time. Then select a generator with the running wattage rating to match or exceed the total load.

Keep in mind that tools and appliances with electric motors require additional surge wattage at startup that can be double or triple the normal running wattage requirement. Look at the surge watts required and make sure you choose a generator with enough additional wattage to start them. (And remember that you're typically not starting more than half of the items at the same time.)

Here's a sampling of power ratings for common household appliances.

ITEM RUNNING WATTS SURGE WATTS
Furnace Fan (gas or oil only) 1/8 HP 300 500
1/6 HP 500 750
1/4 HP 600 1000
1/3 HP 700 1400
1/2 HP 875 2100
Refrigerator 700 2200
Microwave Oven 625 800
Coffee Maker 1750
0
Toaster 1050-1600 0
Electric Range/Oven 12,500 0
Well Pump 1/3 HP 750 1400
  1/2 HP 1000 2350
Sump Pump 1/3 HP 800 1300
  1/2 HP 1050 2150
ITEM RUNNING WATTS SURGE WATTS
Lights On Bulb

Television 300 0
Garage Door Opener 1/4 HP 550 1100
  1/3 HP 750 1400
Portable Heater 100-1500 0
Hair Dryer 1100-1600 0
Iron 1200 0
Water Heaters Gas 500 1500
  Electric 7000-7500 0
Computers Desktop 600-800 0
  Notebook 200-250 0
  Monitor 200-250 0
Printer 400-600 0
Fax Machine 600-800 0
Cordless Telephone 100 0

Note: These are only estimated wattages. Please check your particular appliance for actual wattage.

Product Description

Durable DuroMax 7.0 Hp, air cooled OHV engine with low oil shutoff . Heavy duty steel frame with four point fully isolated motor mounts for smooth and quiet operation. Full power panel with engine shutoff switch, volt meter, circuit breaker and power outlets. (2) Fully protected 120V outlets and (1) 120V twist-lock outlet. 8 Hour run time. All steel 4.0 gal. fuel tank with ez-read gauge. Low oil shut-off protects engine. Super quiet muffler reduces engine noise. Specifications: Max AC Output: 4000 watts / Rated AC Output: 3300 watts. Current: 120V, (2) 120v 20A 3-prong outlets (Standard Household plug), (1) 120v 30A twist lock. Low oil shutoff. EPA approved engines. Super quiet exhaust w/built-in spark arrestor. EZ-Pull Recoil start. 7.0 Hp air cooled OHV engine. Fuel Tank Capacity: 4.0 gal. Decibel: 69 dBA. Run-Time: at 50-Percent Maximum Output: 8.0 hrs. Includes: Spark plug wrench? Shipping Weight: 135.00-Pounds.


Customer Reviews

I am very impressed with the overall build quality of this generator. STS95  |  41 reviewers made a similar statement
Received the item fast. angel32866  |  2 reviewers made a similar statement
I am hoping that I don't need it, but I am sure it will be great when I do. Micael Westerholm  |  14 reviewers made a similar statement
Most Helpful Customer Reviews
186 of 190 people found the following review helpful
4.0 out of 5 stars Cost-effective Emergency Power August 30, 2011
Amazon Verified Purchase
I bought this generator in preparation for hurricane Irene. Ordered it on Wen., it arrived on Fri., just in time to set it up before the storm (can't beat Amazon Prime!). The generator was easy to set up and started in one pull. This generator provided power sufficient to run the refrigerator, a mini-split a/c unit, TV, and a couple of fluorescent lights for two days. Under this load, a full tank (4 gallons) lasted around 12-14 hours. This unit appears to be a Chinese import so I do have my doubts about long-term reliability, never the less, the DS4000 appears surprisingly well-constructed and capable for the price.

Pros:
Inexpensive
Easy to Operate
Relatively Quiet (compared to a 22" lawn mower)
Compact
Easy to read fuel gauge

Cons:
Recommended oil change interval of 20 hours (change the oil every other time you fill the gas tank?)
Oil drain obscured by frame below (as oil drains it runs along the frame and makes a mess)
No watt or amp meter (Has volt meter, but why?)
Earth grounding post and hardware (nuts and washers) are too small
Packaging is inadequate for UPS Ground Shipping (operating panel was dented on arrival)

Update 9/18/2012

It's been a full year since I've used this generator. After Hurricane Irene, I drained the fuel tank and changed the oil. This evening the power went out, so I filled the tank and the generator started on the second pull. I love this thing!

Update 11/5/2012

Just got the power back after 7 days; this time it was Sandy The DS4000 proved itself as the little generator that could, running 16 hrs/day for seven days without a problem. I've been using synthetic oil (Royal Purple SAE 30) and extending the oil change interval to once every 2 days (32 hours of use). Doesn't seem to use much oil, maybe down one or two ounces in this interval. I really do love this generator!
Was this review helpful to you?
105 of 109 people found the following review helpful
Amazon Verified Purchase
We have used over the last 3 days to power fridge, 2 fans, charge mobile phones and laptops and run a few lights. We are getting approx a run time of just over 13 hours on one tank (4 gallon) of gas.

Last night even hooked up the tv and cable so our son could watch some tv. Nick, Nick, Nick, Nickeloden. :)

This morning it powered the coffee maker and iron so we could be awake and wrinkle free.

I really did not expect the generator to run as long as it did on one tank so very happy with the purchase.

Next thing to purchase is something to cover it in case of heavy rain. Setup a tarp over table with bungee cords last night but would like something quicker to setup.

If we continue to have the power outage problem here in Oak Park we may look into the natural gas generator that hooks into electric system and fails over automatically. As always we will try to get it from Amazon our favorite store.

We give the DuroStar DS4000S 4,000 Watt 7.0 HP OHV 4-Cycle Gas Powered Portable Generator 2 thumbs up and/or a 5 star rating. Bang for buck we are very happy with this purchase.
Was this review helpful to you?
51 of 53 people found the following review helpful
5.0 out of 5 stars Excellent Generator - Great For Post Hurricane Outages October 6, 2012
Amazon Verified Purchase
I purchased this generator for the occasional power outages of my home to run things like my refrigerator, TV, and computer. And while it is rated at 3,300 watts continuous, (4000 watts peak), my experience with it has been quite impressive. Here are my pros and cons:

PROS:
Inexpensive - This is quite a deal in my opinion for a 3300 watt generator.

Fairly quiet.. They advertise 69 db. It's not super quiet, but this is what I expected for a 3300 watt generator.

Started on first pull out of the box (with choke on)... impressive.

Well built - This generator did not disappoint with the quality of construction.

4 Gallon Tank - Good sized that should run for 10 hours.

CONS:
Provided tools were not adequate to assemble the system. Since I was not expecting tools, I would imagine most people would have the tools necessary to assemble the system.

The wheel kit instructions had pictures that were upside down, and didn't show certain steps in assembly (such as removing the existing rubber feet). Not really an issue as the wheel kit simplicity can be figured out by most.

Power was not perfectly clean. I connected it to my air compressor, and the electric pump that normally purrs on house power, was slightly warbling at half second intervals when running off the generator. I do suspect the power is fine, even for electronic equipment, as from the comments from other owners.

Adding oil was not easy. It took about half a quart of 5W 30 (for cold weather), which I overfilled with a full quart. I had to tip the generator and pour the overflow back into a bowl. The company advises to replace oil "every month or 20 hours" (Did I just read "replace every 20 hours"? Really!?!). They also recommend to check oil level each use (good advice), check the air cleaner each use, clean the gas tank "Every year or 300 hours" , clean the air cleaner "Every 3 months of 50 hours", and check or clean the Spark Plug every "6 months or 100 hours". Quite the overkill on the oil maintenance, but I imagine if one did these tasks, the generator would run better over the years. I am not looking forward to changing the oil.

RECOMMENDED ACCESSORIES:

Don't forget to get the fuel stabilizer if you don't want to drain the gas after each use ( I purchased STA-BIL 22214 Fuel Stabilizer - 32 Fl oz rated at 1 year). I also purchased the manufacturer's wheel kit, a generator cover (Generator Cover 37"L x 25"W- In Taupe.. a quality cover, which was too large, but still works (after a few days, I noticed that mice have been eating the cover... so not such a good purchase here), a 5 gallon gas can (No-Spill 1450 5-Gallon Poly Gas... works great), 4 - 50 foot extension cords with lighted ends (12 gauge wire. Please get 10 gauge wire for longer runs), and 4 tri-plugs (Uninex #PS37UOG ME Orange Tri Tap Adapter ) that can connect at the end of the extension cords.

FINAL TOUGHTS

Given what I know, I would buy this unit again from Amazon for my home power outage needs, and recommend others on a budget to do the same.

I'm ready for hurricanes and the winter!
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Most Recent Customer Reviews
5.0 out of 5 stars Wonderrful
Came quickly and was easy to unpack! Was exactly what we ordered and works great! It's quiet and starts on the first pull!
Published 1 day ago by Lisa
4.0 out of 5 stars Works as intended
I bought the generator months ago and just fired it up for the first time recently. Everything works as intended.
The only problem I had was mounting the wheel kit. Read more
Published 14 days ago by Nizzamus
5.0 out of 5 stars Great value
So far so good. We used it once and it worked like a champ. Not super quiet, but not annoying. We were out in the desert so no one real close. Read more
Published 16 days ago by Robin
5.0 out of 5 stars Great Value
I purchased this generator based on the number of five star reviews that others have given. I also purchase the wheel kit. A must have as this generator is not light. Read more
Published 19 days ago by daily commuter
5.0 out of 5 stars no problems with this generator
I read a few reviews about this generator that had me a little worried about the quality of this product but after traveling and using this generator more than 10 times (mostly... Read more
Published 20 days ago by Timothy Ezell
5.0 out of 5 stars better than expected
Starts first pull, runs my huge probable compressor with a 100 ft power cord with ease. Could nit be more pleased with this order and the free 2 day shipping was great I highly... Read more
Published 23 days ago by Mclane Enterprises
5.0 out of 5 stars so far so good
Tested it and it runs well. Powered my sump pump as expected, but I feel the pump did not work as powerful as usual. I did not try power on both of my sump pumps at the same time. Read more
Published 1 month ago by A.J.
5.0 out of 5 stars Haven't had to use it - but I love the price!
We purchased this generator to use for backup power in the event of a hurricane to power our sump pump and prevent our basement from flooding... again. Read more
Published 1 month ago by Watchlover
5.0 out of 5 stars Absolutely PHENOMENAL for the price. BEST VALUE ON AMAZON
I bought this for our bounce house rental company. We sometimes to rentals in city parks where there is no power so we need something powerful to power our bounce houses and... Read more
Published 1 month ago by Jeremy Truitt
4.0 out of 5 stars Handy must have item
This is a handy item we bought "just in case" with all the wild weather we've seen in the last few years. Read more
Published 1 month ago by Go Pats!
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