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A simple maintenance checklist for standby generators

By Rokon August 28, 2026 1 min read
A diesel generator set

A standby generator spends most of its life idle, which is exactly when problems build up unnoticed. A short routine of regular checks makes it far more likely to start and run when the mains fails.

Regular checks

  • Run the set on load at regular intervals, not just idle
  • Check oil, coolant and fuel levels, and look for leaks
  • Keep the battery charged and the terminals clean
  • Test the changeover panel and the alarms

Fuel matters

Diesel left in a tank for a long time can collect water and sediment. Keep the tank clean, use fuel that is in date and have the fuel checked as part of each service.

A generator is only as ready as its last test.

Checklist Maintenance Standby power
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