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Portable Generator FAQs

Portable Generator Product Support Videos

In addition to our library of FAQs below, we also have extensive product support available through demonstrative videos. These detail some of our most common questions and concerns in a visual, dynamic format. Click on the video(s) below that best answer your questions.

My portable generator won’t start. What should I do? Video

My portable generator won’t start. What should I do?

If your portable generator won’t start, there are several steps you can take to get your unit running again. First, check the fuel level and add some if needed. Next, set the valve properly. Check and fill the oil as needed, and check the spark plug connection. Set the choke, and be sure all connections are secure. For a demonstration and other tips for starting your generator, watch this short video.

How do I maintain my portable generator? Video

How do I maintain my portable generator?

Regular generator maintenance is important for extending the life of your unit. It should be done once per year or every 100 hours of run time. This includes six steps: cleaning your unit, changing the oil, cleaning the air filter, running the unit monthly, charging the battery, and properly storing the unit. The video explains in detail how to do all of this correctly.

Why won’t my generator produce power? Video

Why won’t my generator produce power?

To find out why your generator isn’t producing power, first make sure everything is unplugged from the unit. Next, use a working appliance such as a box fan to test the output. Then check your breakers. You may also need to field flash your unit. This video explains how to do that and offers other tips as well.

How do I assemble my portable generator? Video

How do I assemble my portable generator?

Assembling your portable generator is easy, but it’s important to do it correctly. You’ll need to install the handle, feet, wheels, and battery. This video will show you what tools you need and how to precisely put every part together.

Why is the engine running rough? Video

Why is the engine running rough?

There are a handful of reasons why your unit’s engine could be running rough. You’ll need to make sure it has enough fuel, check the air filter, set the valve, and more. This video will go over all the checkpoints step by step.

How do I charge my electric start portable generator? Video

How do I charge my electric start portable generator?

There are four easy, but important steps to properly charge your portable generator. These include connecting the battery to the unit, plugging the charger into the wall, plugging the other end of the charger into the unit, and making sure you have utility power. It’s also important to never overcharge your battery. Generac shows you a visual demonstration of each step along with charging tips in this video.

How do I fill the oil on my portable generator? Video

How do I fill the oil on my portable generator?

There are 3 important steps to follow when filling the oil on your portable generator. First, make sure the unit is on level ground. Next, fill the oil, and finally, make sure the level is at FULL on the dipstick. Each portable unit is equipped with our G-Force engine. There are 2 fill locations, but only one is accessible at a time. Only fill one and do not overfill. Watch this video for a complete demonstration.

How do I remove stale gasoline? Video

How do I remove stale gasoline?

If the gas in your portable generator gets stale, it may run roughly or not at all. It’s important to keep the gas full and fresh. There are several steps to safely and properly drain out stale gas before you add new gas. From turning the fuel shut off valve off to disconnecting the fuel line, draining the gas, and cleaning the carburetor (plus more), Generac shows you exactly what to do in this video.

**Additional Videos Coming Soon!** Video

**Additional Videos Coming Soon!**

  

Portable Generator FAQs

  • Where is the engine made?

    Generac G-FORCE®  and OHVI engines are designed and manufactured by Generac Power Systems Inc. at our facilities in Wisconsin. 

    The Generac OHV engines are not engineered or manufactured in the U.S.

  • How does the Generac G-FORCE® engine compare to air cooled engines used in other brands of generators?

    Unlike other engines used in backup power generation, Generac G-FORCE® engines are designed specifically for generators. They are engineered to run for the long periods of time required during a severe power outage or on a job site. They utilize the same type of pressurized oil lubrication used to give automobile engines long and trouble-free lives. 

  • What type of oil is recommended? How often should it be changed?

    Above 32°F, use SAE 30. Below 40°F and down to -10°F, use 10W-30. Synthetic 5W-30 can be used in all temperatures. Oil should be changed after the first 20-30 hours of operation and every 100 hours of run time thereafter.

  • What type of gasoline is recommended for my portable generator?

    Use clean, fresh unleaded gasoline with a minimum 87 octane rating.

  • How often should I perform routine maintenance on my portable generator?

    All generators require periodic maintenance, such as oil and filter changes, to ensure maximum performance for years of reliable service. Refer to the owner's manual for routine maintenance procedures and schedules. 

  • Does the portable generator need to be grounded?

    It depends on the application. 

    When using just the extension cords, you do not need to use a ground rod. (If you have a bonded neutral portable generator. This can be found in the owner's manual.)

    When connecting to an electrical panel (building electrical system, manual transfer switch, RV, etc.) you need to connect your generator to a ground rod. 

    Ground rods must be pounded into the earth, then connected to the ground lug on the generator via a ground cable. The rod must be at least 8ft into the earth.

    We strongly recommend that you check and adhere to all applicable federal, state and local regulations relating to grounding.

  • When storing my portable, at what point should the gasoline be drained?

    It is highly recommended that you drain the fuel from the tank and run the carburetor dry if you are planning on storing your portable for more than 30 days.  It has been found that fuel begins to deteriorate within approximately one month. In order to preserve its properties, you should add a stabilizer to it right from the start. The stabilizer will neutralize the damaging effect that ethanol has on the components which are responsible for combustion.  Be sure to carefully follow the fuel stabilizer's ratio instructions, and noting the duration that the fuel stabilizer is effective for. 

  • Can I vent the exhaust from my portable generator out of an enclosed area? Where should I set my portable?

    No. Never run the generator indoors, in a garage or in an enclosed area. Portable generators are designed to run outside where there is plenty of ventilation.  You need to position your portable away from doors and windows so that the exhaust fumes do not get inside the house.  The produced carbon monoxide gas can cause serious poisoning.  You should also be sure to set your portable where it will be protected from moisture, rain and snow.

  • Can a portable generator be used during inclement weather?

    NEVER run a generator directly in the rain, snow or other wet conditions. NEVER run a generator indoors or in a garage.

  • Where can I purchase parts for my portable generator?

    Parts can be purchased through any Authorized Generac Dealer. See our Dealer Locator to find a dealer near you. You can buy parts online or call (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?

    Owner's manuals and other documentation can be downloaded from our Product Support Page using the unit's serial number, or contact us for further assistance. 

  • Where can I find a GENERAC dealer in the U.S. or Canada?

    To locate a dealer near you, please refer to our Dealer Locator section on this website.

  • Where do I go to have warranty repairs performed on my portable generator?

    Any Authorized Generac dealer can perform warranty service. To find your local authorized Generac Dealer, see our locator or contact us for additional information. Our Authorized Service Centers provide parts, service and information on Generac equipment, regardless of where it was purchased. Authorized Service Centers are staffed with trained technicians supporting all aspects of the Generac portable generator line.

  • What do CSA, 49ST and 50ST mean?

    CSA denotes whether or not the model is approved by the Canadian Standards Association, 49ST denotes that the product does not meet California requirements and 50ST means it is available for sale in California.

  • What does non-CUL mean?

    CUL is Canadian Underwriter's Laboratories Inc. certified.  If a product is marked that it is non-CUL, that means that model is not certified for use in Canada.

Online Product Support

Looking for more? In Generac's Online Product Support section you can find the specifications, product manuals, frequently asked questions, how-to videos, and more for your product.

Online Product Support