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 secure 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 all kinds of uses from getting you through a power outage to keeping you and your circle of relatives supplied with the entire vital conveniences of home whilst being miles from nowhere.


Note for California residents: This model isn’t CARB-compliant. Units sold to California will have to be CARB-compliant.
The power panel features the principle controls, including start switch, volt meter, and circuit breaker. It offers two 120-volt, 20-amp, 3-prong outlets (NEMA 5-20R) to offer power to your whole 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 give protection to the engine. An optional wheel kit could also be to be had for the DS4000S, enabling easy portability. Backed by a 1-year limited warranty.
What’s within the Box
DuroStar generator; tool kit; operating instructions
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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 decide whether a generator is appropriate on your needs, you need to first add up the wattage of tools, appliances, and motors you need to run on the same time. Then make a selection a generator with the running wattage rating to check or exceed the total load.
Keep in mind that tools and appliances with electric motors require additional surge wattage at startup that may be double or triple the normal running wattage requirement. Have a look at the surge watts required and make sure to make a selection a generator with enough additional wattage to start out them. (And understand that you might be generally not starting more than half of the items on the same time.)
Here’s a sampling of power ratings for common household appliances.
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Note: These are only estimated wattages. Please check your particular appliance for actual wattage. |
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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