A professional who adjusts and repairs automatic pinsetting bowling machines, following maintenance manuals, schematics, and knowledge of equipment, using handtools, power tools, and testing equipment. Responsibilities include:

• Observes operation of machine to determine nature and cause of malfunction.
• Tests relays, solenoids, transformers, electric motors, and wiring for defects, using continuity tester, ammeter, and voltmeter.
• Disassembles and replaces or repairs mechanical and electrical components or parts, such as bearings, coils, armatures, and wiring, using handtools.
• Cleans and lubricates machine.
• Instructs assistants in locating and repairing minor defects.
• Directs workers or participates in reconditioning and painting bowling pins.
• Maintains perpetual inventory of and orders replacements for spare parts.