Removes, installs, repairs and troubleshoots component parts of fuel systems to correct malfunctions of turbine, centrifugal, and rotary pumps, manually operated plug/ball valves, hydraulically operated diaphragm type valves, pilot control systems, tank gauges and vents, filter separators, fuel flow meters, hydrant outlets, differential pressure gauges, and truck loading and fill connections. Independently installs, modifies, repairs and maintains a variety of new and existing utility, supply and disposal systems and equipment such as sewage, water, oil, gas distribution systems, and water closets, tubs, showers, backflow prevention devices, fire suppression and sprinkler systems.