Accurately diagnose malfunctions and perform the necessary repairs for them including, but not limited to, repairing engine failures, repairing mechanical and electrical systems malfunctions, and replacing parts and components as required. The essential functions of this position require a person to work with hazardous or flammable materials; AND/OR to complete tasks in which a lapse of attention could result in injury, including without limitation the operating, repairing, maintaining, or monitoring of heavy equipment, machinery, or motor vehicles.