I’m going to tell you a story that might sound familiar.
Last winter, we had a nasty ice storm. I’m talking trees cracking like gunshots, power lines down all over the county. I was feeling pretty good about myself, honestly. I had dropped a decent chunk of change on a nice portable generator six months earlier. I wheeled it out of the corner of my garage, proud as a peacock, grabbed the pull cord, and… nothing.
Not a sputter. Not a cough. Just that sad, hollow whoosh of a cord snapping back into place.
I spent the next two hours freezing my fingers off, taking the carburetor apart with a headlamp strapped to my forehead while my wife glared at me from the window. The culprit? Fuel that had turned into a sticky varnish while it sat.
So, when I tell you I know the frustration of a dead generator, I mean it. I lived it. And I am here to tell you that storing this thing properly is not just a chore—it’s the only thing that separates you from the hero of the neighborhood or the guy eating cold soup by candlelight.
The Fuel Trap (And Why It Bit Me)
Let’s get this out of the way first because it’s the number one killer of these machines.
That gasoline you buy at the corner station? It’s not the same as it was twenty years ago. They put ethanol in it, usually up to 10%. Ethanol is basically a magnet for water. It pulls moisture right out of the air.
So, you fill your tank, roll the generator into the garage, and let it sit for four months. During that time, that fuel separates. The water and the ethanol settle to the bottom. The gasoline turns into a gummy, jelly-like substance that clogs up the tiny little jets in your carburetor.
Here is what I do now so I don’t repeat my mistake:
- If I’m storing it over a full season (winter or summer): I run the generator dry. I hook up a small space heater to it and let it burn through every last drop of fuel until the engine dies on its own. This clears out the carburetor and the fuel lines completely.
- If I’m keeping fuel in it for “just in case” scenarios: I spend the extra five bucks on a high-quality fuel stabilizer. I put it in the tank, shake the generator slightly, and let it run for ten minutes to make sure the treated fuel reaches the carburetor.
The “I’ll Just Throw a Tarp Over It” Mistake
I cannot tell you how many people do this. They drag the generator out back, toss a blue tarp over it, and call it a day.
Here is the problem. Tarps trap moisture. When the sun comes out and heats that tarp, the ground underneath it sweats. That condensation gets into your alternator, your outlets, and your control panel. I have seen circuit boards completely fried because they were wrapped up in a wet, sweaty blanket of plastic.
You want to protect it, sure. But you need to let it breathe.
- Use a breathable cover. They make canvas or polyester ones specifically for generators. They keep the dust off but let the moisture escape.
- Park it on a couple of 2x4s or a pallet. Do not let it sit directly on concrete. Concrete is porous and wicks moisture up from the ground. That moisture will rust the bottom of your frame and your gas tank.
The Battery (If You Have Electric Start)
This one is simple, but nobody does it.
If you have a generator with a key start or a push button, you have a battery that is discharging every second it sits there. I used to just disconnect the negative cable and hope for the best. Come winter, the battery would be stone dead.
Now, I keep a cheap Battery Tender Junior hooked up to it. It’s a smart charger. It doesn’t just pump juice into the battery; it monitors the charge level and gives it a little top-off when it dips.
Or, here is the brutal truth: if you are storing it for more than six months, just pull the battery out and keep it inside your house. The cold kills batteries. Keeping it in a temperature-controlled environment preserves its life.
Run It For No Reason
This sounds silly, but you have to exercise your generator.
About once a month, even if the power is fine, I wheel mine out into the driveway, plug in a portable fan, and let it run for about fifteen to twenty minutes.
I’m not doing this to generate power. I’m doing this for a few reasons:
- It burns off moisture that has condensed inside the engine block.
- It re-lubricates the piston rings and cylinder walls.
- It keeps the rubber seals inside the fuel pump from drying out and cracking.
It takes almost no effort, but it keeps everything elastic and healthy.
Where To Actually Put This Thing
Now, this is the part that hits close to home for a lot of you. You don’t have a dedicated workshop. You don’t have a spacious shed. You have a garage that is already packed with Christmas decorations, a broken treadmill, and three bicycles.
This is actually the reason I started looking into storage units myself. I have a customer who rents a 10×15 unit from us at Prime Storage Solutions specifically for his generator and his lawn equipment. He told me he got tired of moving the generator every time he wanted to pull his car in.
If you are in that boat, a storage unit works great for this stuff. Just make sure you get one that is clean and dry. You don’t want to put a sensitive machine in a damp, musty space.
One Last Thing: The Oil
I am guilty of this. I used to think, “Well, I only ran it for ten hours all year, so the oil is fine.”
Wrong.
Used oil contains acids. As the engine runs, tiny particles of metal and soot get suspended in the oil, and the combustion process creates acidic byproducts. If you leave that dirty oil sitting in the crankcase for six months, it starts to eat away at the bearings and the inside of the engine.
My rule is simple: Change the oil before you put it away, not after you pull it out. Fresh oil has corrosion inhibitors in it. That fresh oil sitting on your cylinder walls is your first line of defense against rust.
Here is my bottom line for you
Storing a generator isn’t hard, but it requires you to be deliberate. You can’t just ignore it for a year and expect it to save you during a crisis. Spend twenty minutes doing these things, and I promise you, that machine will reward you by roaring to life the moment the lights flicker off.
And if you really don’t have the space to store it properly—because trying to work on your generator while dodging lawn chairs and old paint cans is a nightmare—look into a storage unit. We have folks at Prime Storage Solutions who use our space just for this, and they swear they sleep better knowing their equipment is safe and accessible.
Don’t be me that night in the ice storm. Prep your gear now while you have the daylight and the warmth to do it. Your future self will thank you.
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