We performed a comprehensive preventative maintenance service on a Generac standby generator in Huntsville, Texas. Our team conducted a full inspection of the internal engine components and electrical systems to ensure reliable operation during power outages. We completed a precision valve adjustment and replaced the engine oil and filter as part of the scheduled 135-hour service interval. We tested the 12-volt starting battery and verified the electrical output using a digital multimeter to confirm stable voltage delivery. Additionally, we installed a Generac cellular connectivity accessory to allow the homeowner to monitor the system status remotely. This thorough servicing ensures the unit remains in peak condition and ready for the next utility failure.