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Frequently Asked Questions

Where is the engine made?
The engines used on the GUARDIAN Ultra Source® portables are manufactured at our Generac Power Systems, Inc. factory in Whitewater, WI. Generac engines are industrial grade engines designed to provide the ultra-quiet, longer-lasting performance required of portable generators. Generac OHVI® industrial engines run 3-5 times longer than SV/OHV lawnmower style engines. They also run 30-50 degrees cooler, are 5% more fuel-efficient and reduce oil consumption by 25%.

What is the difference between rated watts and maximum watts?
Rated watts describe the amount of power the portable generator can produce continuously. Maximum wattage is the power that the generator can produce for short periods of time. Motor starting is a good example of maximum wattage requirements.

What type of oil is recommended?
SAE 30W high detergent.

How often should I change the oil?
Oil should be changed after every 50-hours of run time.

What type of gasoline is recommended?
Use clean, fresh unleaded gasoline with a minimum 85 octane rating.

How often should I perform routine maintenance?
The maintenance schedule for your GUARDIAN Ultra Source portable generator is in the owner's manual.

Does the portable generator need to be grounded?
Yes. For safety, the generator must be properly grounded. If the generator is not grounded, you run the risk of electrocution. We strongly recommend that you check and adhere to all applicable federal, state and local regulations relating to grounding.

Should the fuel be drained when storing the portable generator for more than 30 days?
Yes. It is highly recommended that you drain the fuel from the tank and run the carburetor dry. OHVI engines meet EPA and CARB regulations and are less tolerant of stale fuel.

Can I vent the exhaust out of an enclosed area?
No. Portable generators are designed to run outside where there is plenty of ventilation. Never run the generator in the home or an enclosed area.

Can the generator be used during inclement weather?
Generators can be used during a wide variety of weather temperatures, but should be protected from the elements when not in use to prevent shorting and rusting. NEVER run a generator indoors.

Where can I purchase parts?
Parts can be purchased through any Authorized GUARDIAN Dealer. See our Dealer Locator to find a dealer near you. They can also be ordered online through Order Tree at www.ordertree.com or by calling (877) 500-7499. Part numbers are located in the owner's manual.

I can't locate my original owner's manual. How can I get another copy?
For our customers' convenience, we now offer technical information, diagnostic repair, installation and owner's manuals online. Please refer to the Manuals section on this Web site for this information.

Where can I find a GUARDIAN dealer in the U.S. or Canada?
To locate a dealer near you, please refer to our Dealer Locator section on this Web site or call our Automated Dealer Locator (for U.S. locations only) at 1-800-333-1322.

Where do I go to have warranty repairs performed?
Any Authorized GUARDIAN Ultra Source dealer can perform warranty service. To locate a dealer near you, please refer to our Dealer Locator section on this Web site or call our Automated Dealer Locator at 1-800-333-1322, 24/7/365. Our Authorized Service Centers provide parts, service and information on GUARDIAN equipment, regardless of where it was purchased. Authorized Service Centers are staffed with trained technicians certified in supporting all aspects of the GUARDIAN portable generator line.