Uses and maintains tools such as, multi-meters, flange spreaders, motor joists/lifts, hydraulic jacks, impact wrenches, pneumatic tools, air compressors, torque wrenches, prover tanks, master meters, portable electrical and air driven pumps, tubing benders, tapes, rules, plumb bobs, hand and power pipe threading machines, cutters, pipe wrenches, angle drills, hacksaws and power saws, power sewer cleaning equipment, various combustible gas and toxic vapor detectors and meters, self-contained breathing apparatus, supplied air respirators, and various personnel protective equipment. Removes, installs and repairs, and troubleshoots component parts of fuel 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.