A diesel generator must be ready to start and deliver power when needed. Regular inspections help detect low fluid levels, leaks, clogged filters or a weak battery before a failure. The schedule below is a general guide: the Perkins engine and generator set operation and maintenance manuals determine the tasks and intervals applicable to your unit.
Before each use or each operating day
- Check engine oil, coolant and fuel levels according to the model's procedure.
- Check the battery condition, alarms, air filter and accessible belts.
- Walk around the equipment to look for fuel, oil or coolant leaks and any visible exhaust problems.
Follow safety instructions when checking the equipment: some parts remain hot or pressurized after shutdown.
Every week or during regular testing
- Inspect the air filter and belts for blockage, wear or incorrect tension.
- Check lines and fittings, and look for water or sediment in the fuel system if the equipment has a separator.
- For a standby generator, perform the tests specified in the manual and record any difficult starts or alarms.
Every month
Review the condition of the battery and charger, fluid levels, filters and signs of leaks. Check operating hours and the last service date to determine whether maintenance is due. Monthly oil changes are not appropriate for all engines: oil and filter replacement frequency depends on the model, operating hours and conditions of use.
At 500 and 1,000 hours: service to plan
These intervals often appear in maintenance schedules, but tasks differ by engine. At these intervals, a technician may need to replace oil or filters, inspect the air intake, fuel or cooling system, and make certain adjustments. Coolant and valve clearance do not have a universal service interval: consult the schedule for your engine's serial number before ordering parts or performing service.
Record the engine model and serial number, hours on the meter, last service date and generator application. This information helps confirm the appropriate tasks and parts.
Common maintenance questions
Should a standby generator run even when there is no outage?
Yes. Periodic tests check starting and operation. Test frequency, duration and load must follow the instructions for the generator set and its installation.
Should the oil be changed every month?
No, that is not a general rule. Depending on the engine and application, service is determined by elapsed time, operating hours or whichever comes first. Consult the manual for the exact model.
Who should perform adjustments and major work?
A qualified technician should perform fuel system work, valve adjustments and specialized electrical or mechanical work. Simple checks must also follow the manufacturer's safety instructions.
What information should be kept in a log?
Keep test and maintenance dates, operating hours, alarms, actions taken and parts replaced. This record helps plan the next service and diagnose problems.
Need maintenance details for your model?
Send us the engine model, serial number and hours on the meter.
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