REPAIR SHOPS AND RELATED SERVICES, N.E.C. (SIC 7699) Establishments primarily engaged in specialized repair services, not elsewhere classified, such as farm machinery and equipment repair; lawnmower, saw, knife, and tool sharpening and repair; bicycle repair; lock and gun repair; musical instrument repair; and the repair of typewriters. Repair services which involve primarily electrical or electronic equipment or components are classified in Industry 7629; however, primarily mechanical repair of electrically powered equipment, such as electric sewing machine repair, is included here.