Predator Generators: How To Prep, Run and Maintain Them for Years of Service

generator with wheel kit - brand new

You just bought– or are about to buy– your first generator. Good move, it’ll be a valuable asset to you and your family, especially in times of emergency. But, even though it’s got a gas engine and a pull cord, a generator isn’t the same thing as a lawn mower or weed whacker. There are a number of steps involved in the prepping, running and maintaining of your generator that you should be aware of before you try to do anything with it. Here are a few tips to make sure you get a smooth, safe operation, and the power you need:

generator outdoors

  • CRUCIAL– If you take anything away from this post, it’s that you NEVER run your generator in a garage (even an open garage) and NEVER run it in the house. Keep it outside, at least 15 feet from the house, and way away from all windows. As valuable as your generator is to keeping things going, it’s also a carbon monoxide machine. But of course, when used properly, it’s invaluable.

generator manual

  • Before you do anything, read the generator’s manual, from cover to cover. The more you know about your portable gas generator, the more apt you are not to do anything wrong, and it will provide many years of low-maintenance emergency power.

grounding rod

  • Prior to setup, you’ll need to ground the generator. This is done by connecting a #6 AWG grounding wire from the Grounding Terminal to a grounding rod (above) which is at least 24 inches in the ground. The grounding rod must be an earth-driven copper or brass rod that can adequately ground the generator. The grounding wire and rod may not be included with the generator, so make sure you get those as well when you make your purchase.
  • A great feature that some gas generators have is an electric start, because they can make starts fast and effortless. If yours has an electric start, now’s the time to make sure the 12v battery is installed and connected.

generator oil fill

  • Next you need to add the fluids. A key to a generators long life– as with any engine– is oil. It’s also helpful to know that without oil, the generator won’t start. Check the manual and make sure you’re using the right oil type and changing it according to manufacturer’s specifications. SAE10W30 is often recommended for general-purpose, all-temperature use.

generator gas fill

  • Add fuel to within 1″ of the rim of the tank. Be careful never to overfill. Unless otherwise instructed, use regular Unleaded 87 Octane gasoline.

generator startup

  • Now you’re ready to start the generator. Note the slight difference in the above chart between the Manual Start and the Electric Start.
  • Let the gennie run briefly before you plug anything into it, and make sure when you do plug something in, that the appliance is off. Plug in appliances one at a time, and power each one up before you plug in the next one. You want to make sure you’ve got the power to accommodate them. Pay attention to the watts of each unit before you plug it in after the other; you want to always stay under the generator’s max. If the generator overloads, it could damage the appliances.
  • Now you’re ready to rock n’ roll!

Other tips to keep in mind…

  • Never connect your generator with a power cord into an electrical outlet in the house. This power will “back feed” into the utility lines running to your house, and in the event of a blackout, this could kill a utility crew member called to restore power to the neighborhood.
  • Only use  a proper power cord. The power provided by your gas generator is measured in watts. A power cord is measured in amps. If, for whatever reason, you need a replacement power cord, choose one that matches the most powerful outlet on your generator. The power cord would need to be heavy-duty, at least 12 gauge, and less than 100 feet.
  • Never refuel a running generator– or even one with a still-hot engine! The heat could ignite the gas. Shut it off and let it cool for at least 10 minutes. And only refuel in a well-ventilated area.
  • Change the oil during lengthy outages. Check your manual for the proper intervals. If your generator doesn’t have an hour meter (telling you how long it’s been running), keep a log so you don’t lose track.
  • Conserve your gas! If the neighborhood power went out, chances are local gas stations are also down. Only use whatever appliances you need to and, if possible, turn it off overnight. A refrigerator can handle no power for 3-4 hours.

When you’re done

  • When the power comes back, drain the gas from the generator. If you leave the gas in, it can ruin the carburetor.
  • Change the oil one last time.
  • Every month, feed the generator a 1/2 gallon of gas and run it for at least 30 minutes. This will prevent blockage in the carb.

Your portable gas generator will be ready for the next emergency, and will last for years!

When you’re ready to purchase your generator, but need help determining what size to get, here’s a GENERATOR BUYING GUIDE to help you out. And don’t make any decisions until you’ve had the chance to look at the award-winning Predator Generators at Harbor Freight Tools! Read the reviews and research the YouTube videos, and you’ll learn for yourself what a great value they really are.

Hyperbole aside, in the event of an emergency, having a portable gas generator can mean the difference between life and death for you and/or a member of your family.