Why Maintenance Matters
Your generator sits quietly for months then must spring into action instantly. Without regular maintenance you risk discovering problems during an actual emergency. A well-maintained Generac will start reliably and last 20+ years.
Weekly: Exercise Cycle
Program your generator to run a 15-20 minute weekly exercise cycle. This lubricates internal components, charges the starter battery, and verifies the system is ready. Check Mobile Link to confirm completion.
Monthly Checks
Check engine oil level. Inspect air filter. Verify coolant level (liquid-cooled models). Look for oil or coolant leaks. Clear debris from enclosure vents. Check battery terminals. Verify block heater is warm.
Every 200 Hours or Annually
Change engine oil using Generac-approved oil. Replace oil filter. Replace air filter. Replace spark plugs (gaseous fuel models). Inspect fuel filters.
Every 400 Hours or 2 Years
Replace coolant hoses. Flush and replace coolant. Load-test battery. Inspect drive belt. Clean crankcase breather. Verify all electrical connections.
Pro Tips
Keep a maintenance log with dates and hour-meter readings. Always use genuine Generac parts. Never skip the weekly exercise — it is the single most effective reliability measure.
