Generator Maintenance Checklist

Generators fail for one reason: neglect. People buy them, stick them in the corner, and assume they'll work when the power drops. This checklist keeps your generator ready to actually start, run smoothly, and power what you need during an outage.

For related preparedness steps, see Power Outage Readiness Checklist, Storm Readiness Checklist, and Basic Disaster Readiness Checklist.

1. Fuel System

[ ] Store fresh, stabilized fuel in approved gas containers.
[ ] Rotate stored fuel every 6 months.
[ ] Never store fuel inside the house—use sheds or detached areas.
[ ] Check the fuel tank for rust or sediment before use.

2. Oil and Lubrication

[ ] Change the oil according to the manufacturer’s schedule.
[ ] Check oil levels before every run.
[ ] Replace the oil filter regularly.
[ ] Inspect for leaks around seals and gaskets.

3. Air Filter and Intake

[ ] Clean or replace the air filter every season.
[ ] Make sure intake vents are clear of dust and debris.
[ ] Store the generator in a clean, dry place to prevent clogging.
[ ] Check for rodents or nests near the intake area.

4. Battery (for Electric Start Models)

[ ] Test the battery monthly.
[ ] Keep terminals clean and corrosion-free.
[ ] Use a trickle charger when the generator is stored long-term.
[ ] Replace the battery if the generator cranks slowly.

5. Cords, Outlets, and Load Management

[ ] Inspect extension cords for cracks, frays, or missing insulation.
[ ] Use heavy-duty, outdoor-rated cords only.
[ ] Check generator outlets for scorch marks or loose connections.
[ ] Avoid overloading—know your generator’s wattage limits.

6. Testing and Operation

[ ] Run the generator at least once a month for 10–15 minutes.
[ ] Test under load occasionally (plug in something small).
[ ] Listen for rough idling or unusual noises.
[ ] Verify the generator starts easily after sitting.

7. Ventilation and Safety

[ ] Never run a generator indoors or in enclosed spaces—CO builds quickly.
[ ] Keep generators at least 20 feet away from the house.
[ ] Point the exhaust away from windows and doors.
[ ] Use CO detectors if running a generator anywhere nearby.

8. Storage and Long-Term Care

[ ] Drain the carburetor if storing for more than 30 days.
[ ] Clean dust and dirt off the generator before storing.
[ ] Keep it covered to prevent rust but allow airflow.
[ ] Store on a stable, level surface to avoid damage.

9. Accessories and Extras

[ ] Keep extra oil, filters, and spark plugs on hand.
[ ] Store a funnel and fuel stabilizer near your generator supplies.
[ ] Label cords by wattage so you don’t guess during an outage.
[ ] Keep a fire extinguisher nearby—see Fire Extinguisher Types and Uses.

10. Documentation and Records

[ ] Keep the manual accessible.
[ ] Write down maintenance dates on a sticker or log.
[ ] Note any performance issues and address them before storage.
[ ] Review your generator needs yearly as part of the Home Safety Annual Review.

A generator is only useful if it actually runs when you need it. Maintain it, test it, and store it correctly, and you’ll never be the person pulling a dead generator during the middle of an outage.