Repair, install, adjust, or maintain industrial production and processing machinery or refinery and pipeline distribution systems.

Repair, adjust, or install all types of electric or gas household appliances, such as refrigerators, washers, dryers, and ovens.

Install and repair industrial and commercial refrigerating systems.

Install, service, or repair heating and air conditioning systems in residences or commercial establishments.

Install, repair, and maintain mechanical regulating and controlling devices, such as electric meters, gas regulators, thermostats, safety and flow valves, and other mechanical governors.

Install, service, or repair automatic door mechanisms and hydraulic doors. Includes garage door mechanics.

Repair and replace tires.

Diagnose, inspect, adjust, repair, or overhaul recreational vehicles including travel trailers. They specialize in maintaining gas, electrical, hydraulic, plumbing, or chassis/towing systems as well as repairing generators, appliances, and interior components. Includes workers who perform customized van conversions.

Repair and service bicycles.

Diagnose, adjust, repair, or overhaul small engines used to power lawn mowers, chain saws, recreational sporting equipment and related equipment.