GSHA Services, LTD serviced two Generac home standby generators on a rural property in Harvard, IL: a 16kW unit that backs up the barn and a second unit that protects the house. Our generator technician performed a complete air-cooled tune-up on both machines, changing the engine oil and oil filters, replacing the air filters and spark plugs, installing a new Interstate Group 26R battery, cleaning the enclosures, and adding Generac cold weather kits (battery warmer and oil heater) so the units start reliably in sub-zero Illinois winters. Both generators were exercised under load and the Evolution controllers were checked for alarms before we left. Need generator maintenance, a tune-up, or generator repair in Harvard, Woodstock, Marengo, or McHenry County? GSHA Services is a factory-authorized Generac service dealer for homes, barns, and farms across northern Illinois.