DuroStar DS4000S, 3300 Running Watts/4000 Starting Watts, Gas Powered Portable Generator

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.

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

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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 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
  • 8 Hour run time
  • 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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3 Responses to DuroStar DS4000S, 3300 Running Watts/4000 Starting Watts, Gas Powered Portable Generator

  1. H. Zelizer says:

    Cost-effective Emergency Power 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…

  2. Trevor Mankus says:

    Great unit for a great price! I ordered this generator after the last season of hurricanes and storms in Northeast USA. My house is in a flood prone area and I wasn’t going to go through another entire hurricane season with sleepless nights. My old generator stopped working last year so I knew I was in the market for a new one.I paid $299 for this generator off of Amazon and another $39 for the wheel kit (DuroStar DS4000S-WK Wheel Kit for DS4000S). As of writing this review, the generator is down to $289.00…

  3. Serg08 says:

    Help for first time users of generators I purchased this generator right after hurricane Irene. After hurricane Irene had damaged power lines in my neighborhood and being without power for 4 days I relied on my car battery to power lamps in my home using a power converter which included battery clamps. I decided to buy a generator as using a car battery during power outages can only go so far. Enter hurricane Sandy, I lost power again for 7 days where my new generator came into play to be used for the first time. I never operated…