A generator set or genset consists of a diesel engine that requires maintenance, just like your car. You should check the following before every start of the generator set:
– Diesel level
– Engine oil level
– Radiator coolant level
– Battery water level
– Battery voltage

The recommended schedule maintenance for generator set is every 400-450 hours. The items to be replaced as below:
– Engine oil (15W-40 CI)
– Engine oil filter
– Fuel filter
– Fuel/water seperator filter
– Air filter (depends on dust level)