A professional who services, adjusts, and makes minor repairs on farm vehicles, machinery, and equipment, such as tractors, trucks, automobiles, harvesters, combines, silo fillers, plows, and similar equipment, using handtools. Respnsibilities include:

• Observes and examines machinery and parts in operation to detect malfunctioning or defective units.
• Replaces components, such as carburetors, fuel pumps, generators, ignition points, and spark plugs.
• Adjusts timing of motors, lubricates, washes, paints, and cleans vehicles and attachments, using handtools.
• May assist other workers in more complex maintenance tasks, such as overhaul of machinery and equipment, repair and erection of buildings and structures, plumbing repair, and electrical work on farm.