We always recommend conducting a complete service of your generator every year or every 1000 hours whichever comes first. This service will include 250-hour and 500-hour services along with completely changing the air filters. Also, make sure to drain and replace the coolant and change the oil and fuel lines every 2 years. We at ATS Generators are the top generator maintenance company in UAE that will provide you with all the necessary services to keep your generator fully functioning for a long time.