Generator Maintenance Checklist
A printable standby generator service checklist: engine, electrical, run test and enclosure. Add your details, print or save as PDF.
How to use| Item | OK | Needs attention | N/A | Notes |
|---|---|---|---|---|
| Engine | ||||
| Oil level checked (oil and filter changed: Y / N) | ||||
| Coolant level and condition OK | ||||
| Belts and hoses: no cracks, correct tension | ||||
| Air filter checked / replaced | ||||
| Fuel level and fuel quality OK | ||||
| No fuel, oil or coolant leaks | ||||
| Block heater working | ||||
| Electrical | ||||
| Battery voltage recorded, terminals clean and tight | ||||
| Battery charger operating | ||||
| Wiring and connections secure | ||||
| Control panel: no alarms, set to AUTO | ||||
| Transfer switch (ATS) operation tested | ||||
| Run test | ||||
| Starts promptly | ||||
| Output voltage and frequency (Hz) recorded | ||||
| Ran under load (record minutes / kW) | ||||
| Exhaust system: no leaks, clear of combustibles | ||||
| No unusual noise or vibration | ||||
| Hour meter reading recorded | ||||
| Enclosure | ||||
| Enclosure clean, vents and louvers clear | ||||
| No pest or rodent damage | ||||
| Clearances around unit maintained | ||||
How to use
- The generator template is already loaded, with engine, electrical, run test and enclosure sections.
- Fill in the boxes. Your business name and logo are remembered on this device.
- Check the preview below the form. It updates as you type.
- Press Print, or Save as PDF and choose “Save as PDF” in the print window.
- Want to mix trades or add your own sections? Use the custom builder.
About this generator maintenance checklist
Made for standby generator service visits: engine fluids and filters, battery and charger, transfer switch test and a run test with voltage, frequency and hour meter readings.
Questions
What should be checked on a standby generator?
Fluid levels and leaks, belts and hoses, air filter, fuel, battery and charger, control panel set to AUTO, transfer switch operation, and a run test with voltage, frequency and hours recorded.
How often should a standby generator be exercised?
Many manufacturers recommend a short exercise run weekly or every two weeks. Emergency power systems covered by NFPA 110 have their own weekly inspection and monthly test rules.
Does this work for portable generators?
Yes. Remove the transfer switch, block heater and enclosure items and add any items from the owner manual.
Templates and calculators are for general use only and are not legal, tax or accounting advice.