Buying a Used Generator - What to Check Before You Pay
Last verified: September 2026
Everything to check, ask, and insist on before buying a used portable generator — so you get a bargain, not a headache. Rather have a hand deciding? My number is (330) 200-8042.
Buying a Used Generator, at a Glance
A used generator can be a genuine bargain — or a headache that never starts. The difference almost always comes down to a few checks done before any money changes hands: seeing it run, looking it over, and asking a few honest questions. This guide walks through exactly what to check, what to ask, and the red flags that mean it's time to walk away. There's a printable 29-page version up top.
Common Questions
1 What's the single most important thing to do before buying?
Insist on seeing it start and run, in person, before any money changes hands. A seller unwilling to demonstrate it is telling you something.
2 What should I check on the generator itself?
Check the oil (clean color, right level), look for leaks and rust, and check the cords, outlets, and wheels for damage. A smooth, steady sound when it runs is a good sign; rough or knocking is not.
3 What questions should I ask the seller?
Ask its age, its hours if it has a meter, its maintenance history, and whether it's been run recently or sat unused for a long stretch. Old fuel left sitting is the most common reason a stored generator won't start.
4 Do used generators have the automatic CO shutoff?
Often not — the feature is fairly new, and most older units don't have it. That's not automatically a dealbreaker, but it means being extra disciplined about placement, distance, and carbon-monoxide alarms.
5 How do I know if the price is fair?
I can't quote prices, but a deal that feels too good to be true, paired with reluctance to demonstrate the machine, is a real warning sign. Compare a few listings and trust your gut.
6 What if it won't start when the seller tries?
That's your answer — walk away, or ask them to sort it out and try again another day. Our troubleshooting guide covers the usual reasons a generator won't start, but that's the seller's job to fix before you pay, not yours.
Would You Rather I Just Help?
Weighing a used generator and want a second opinion? I don't sell generators and earn no commission, so I'll give you my honest read on what you're looking at — what to check, what to ask, and whether it's worth it. $99 flat for a visit, 30-day come-back-free.
Would you rather I just do this for you?
No shame in it — plenty of folks would rather hand it off, and that's what I'm here for. I'll come to your home, set it up right, and make sure it's working before I leave. Flat $99 per visit — no jargon, no upsell, and every visit is 30-day come-back-free.
Not a hardware job? I can often fix it remotely for $49 — a secure screen-share, up to 2 hours, that you watch the whole time and can end whenever (included free for $39/mo Support Plan members, and it counts toward the $99 if it turns out I need to come out).