We performed a comprehensive preventative maintenance service on this residential Generac standby generator in Conroe. Our technicians completed a full system inspection, which included replacing the oil filter, installing a new Duracell Ultra battery, and verifying engine rocker arm operation. We also conducted rigorous diagnostic testing of the control module and transfer switch assembly using digital multimeters to confirm all electrical components remained within factory specifications. These routine procedures ensure the unit remains fully operational and ready to provide reliable power during utility outages. By monitoring fluid levels and electrical connections, we extend the service life and functional reliability of the system for the homeowner.