Proper maintenance is vital to ensure the reliable operation and long service life of diesel generator sets. Below is a concise guide to key maintenance tasks:

1. Regular Oil Checks and Changes

Inspect the engine oil level using the dipstick at least once a week. Replace the engine oil and oil filter every 250-500 operating hours

2. Fuel System Maintenance

Use clean, high-quality diesel fuel to prevent clogging of fuel injectors and filters. Replace primary and secondary fuel filters every 500-1000 operating hours.

3. Cooling System Care

Check Coolant Level and ensure the coolant (antifreeze + water) in the radiator is at the correct level. Check for cracks, leaks, or blockages in cooling hoses and the radiator core monthly.

4. Battery Maintenance

Test the battery voltage regularly (should be around 12.6V for a fully charged 12V battery). Recharge immediately if the voltage drops below 12V.

5. Routine Inspections and Tests

Examine wires, cables, and connections for looseness, fraying, or damage weekly. Inspect the generator’s exterior for oil leaks, rust, or physical damage. Run the generator under 50%-75% of its rated load for 30-60 minutes every 3 months.

6. Long-Term Storage Tips

If the generator will not be used for over a month:

Drain all fuel from the tank and fuel lines, or add a fuel stabilizer. Change the engine oil and filter. Disconnect the battery and store it in a cool, dry place (recharge every 3 months).Cover the generator with a waterproof, breathable cover to protect it from dust and moisture.