Generator Maintenance Mistakes Most Owners Miss

December 10, 2025

A generator offers security and comfort when the power goes out. But what happens when your backup power fails? Avoid these common generator maintenance mistakes most owners miss to ensure your unit is always ready. Follow along to learn how to keep your investment reliable so it powers your home when you need it most.

Not Running It Regularly

One of the simplest yet most overlooked tasks is running your generator regularly. Just like a car, a generator needs to operate periodically to keep its components lubricated and functional. Letting it sit idle for months can lead to a dead battery, clogged fuel lines, and hardened seals. Run your generator for 15 to 20 minutes every month. This simple step charges the battery and circulates oil so it starts without issue during an outage.

Ignoring the Oil and Fuel

Old or contaminated fuel is a leading cause of generator failure. Gasoline can degrade in as little as a month, leaving varnish deposits that clog the fuel system. Stale fuel can make it impossible for the engine to start. Similarly, neglecting oil changes can cause engine damage. Check the oil level before each use, and change it based on the manufacturer’s recommendations, typically after every 50 to 100 hours of operation.

Forgetting To Check Filters

Your generator relies on air and fuel filters to run efficiently and prevent damage. A dirty or clogged filter can cause a range of problems, including these:

  • Reduced engine power
  • Increased fuel consumption
  • Difficulty starting
  • Engine overheating

Inspect the air filter regularly, and replace it when it appears dirty. You should also check the fuel filter periodically to ensure a clean fuel supply reaches the engine. Ignoring these components can lead to costly repairs.

Skipping Professional Service

While you can handle many maintenance tasks yourself, professional servicing is essential for long-term reliability. A trained technician can spot issues you might miss, perform complex diagnostics, and ensure all components function correctly. If you’re looking for expert generator maintenance services in Portland, OR , NW Generators can provide the comprehensive care your unit needs. Scheduling an annual inspection will help you avoid the generator maintenance mistakes most owners miss and keep your generator in peak condition.

Keep Your Power On

Don’t wait for a power outage to discover that your generator isn’t ready. Perform regular inspections, and schedule professional maintenance to guarantee reliable backup power for your home. Contact us today to schedule your generator service and stay prepared for emergencies.

You might also like

A gray whole-home power generator sits on a concrete slab in front of a property's AC condenser unit
By Dalton Bourland February 20, 2026
See how a whole-house generator installation typically unfolds, from consultation to final testing, so you can plan for your property’s backup power.
A wooden utility pole and power lines are heavily coated in ice against a clear blue sky.
February 5, 2026
Prepare for Pacific Northwest winters with a solid backup power plan. Learn how to assess needs, choose equipment, and maintain safety for your home.
A man wearing a camouflage jacket is handling a portable gas backup generator outside of a garage.
January 15, 2026
Old fuel can ruin your generator. Find out why fuel degrades, how it clogs engines, and simple steps to keep your backup power ready for the next outage.

Book a Service Today