We performed a comprehensive preventative maintenance service on a Generac standby generator for a homeowner in Conroe. Our team inspected the unit's internal components, including the engine, coolant system, and electrical connections, to ensure reliable operation during power outages. We replaced the spark plugs and verified the condition of the filter and fluid levels. Using a digital multimeter, we tested the battery and electrical system performance while updating the Evolution controller settings and performing a maintenance reset. This routine service optimized the unit's exercise schedule and confirmed the system was ready for automatic transfer.