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A general guideline for Generac generator maintenance is to perform a complete preventative inspection and service every 6 months or 400 hours of run time. This includes tasks like changing oil, cleaning air filters, and inspecting spark plugs. Specific schedules, like Schedule A and Schedule B, are also available, with Schedule A maintenance occurring every 200 hours or 2 years, and Schedule B maintenance occurring every 400 hours or 4 years.  

Detailed Generac Maintenance Schedule:

• Oil Change: Change the oil every 200 hours of runtime or annually, whichever comes first.  
• Air Filter: Clean or replace the air filter every 200 hours or annually.  
• Battery Condition: Check the battery condition every visit.
• Spark Plugs: Inspect or replace spark plugs every 200 hours or 2 years.  
• Schedule A Maintenance: This includes tasks like oil and filter changes, battery check, and spark plug replacement (if needed), performed every 200 hours or 2 years.  
• Schedule B Maintenance: This includes more extensive checks and potential replacements, performed every 400 hours or 4 years. 

Regular generator maintenance, typically annually, ensures optimal performance and longevity, preventing unexpected failures during power outages.