Diesel Generator Maintenance Schedule: Hour-Based Checklist

Every start – 5 minutes

• Oil level on the dipstick, fuel level, coolant or air cooling passages.
• Look for leaks under the set and loose wiring.
• Listen for unusual noise in the first 30 seconds of running.

Every 50 hours

• Clean the air filter element; replace it in dusty conditions.
• Check battery terminals and top up the electrolyte if it is a serviceable battery.
• Clean the cooling fins, fan and canopy ventilation openings.

Every 250 hours

• Change the engine oil and the oil filter.
• Replace the fuel filter and drain water from the filter bowl.
• Check and adjust the belt tension where fitted.

Every 1000 hours

• Have the injector and injection pump checked by a workshop.
• Check valve clearance and adjust if necessary.
• Inspect the alternator bearings and the control panel connections.

Keep a logbook

• Write down running hours, oil changes and any fault you noticed.
• A logbook turns guesswork into evidence when a problem appears, and it supports warranty claims.