Motorboat Mechanics

Repairs and adjusts electrical and mechanical equipment of gasoline or diesel powered inboard or inboard-outboard boat engines.

Job Task

• Tests motor for conformance to specifications and operations, while motor is running in tank, using tachometers, monometers, voltmeters, ammeter, and stroboscope.
• Replaces parts, such as gears, magneto points, piston rings, and spark plugs, and reassembles engine.
• Idles motor and observes thermometer to determine effectiveness of cooling system.
• Adjusts generator and replaces faulty wiring, using hand tools and soldering iron.
• Examines propeller and propeller shafts, and aligns, repairs, or replaces defective parts.
• Analyzes test results, and disassembles and inspects motor for defective parts, using mechanic's hand tools and gauges.
• Repairs mechanical equipment of engines, such as power-tilt, bilge pumps, or power take-offs.
• Starts motor and listens to and inspects it for signs of malfunctioning, such as smoke, excessive vibration, misfiring, and missing or broken parts.
• Writes test report to indicate acceptance or reason for rejection of motor.
• Mounts motor to boat and operates boat at various speeds on waterway to conduct operational tests.
• Sets starter lock, and aligns and repairs steering or throttle controls, using gauges, screwdrivers, and wrenches.
• Operates machine tools, such as lathes, mills, drills, and grinders, to repair or rework parts, such as cams, rods, crankshaft, and propeller.
• Adjusts carburetor mixture, electrical point settings, and timing, while motor is running in water-filled test tank.

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