(a) As used in this subpart (D):

      (1) “New car dealer” includes any person, firm or corporation engaged in the business of merchandising new motor vehicles under a manufacturer’s or importer’s contract for each such make of vehicle who may, incidental to such business, sell used motor vehicles and repair motor vehicles. Such person shall be qualified to conduct such business in accordance with the requirements of section 14-52a.

      (2) “Used car dealer” includes any person, firm or corporation engaged in the business of merchandising motor vehicles other than new who may, incidental to such business, repair motor vehicles. A used car dealer does not include any person, firm or corporation engaged in the business of leasing or renting motor vehicles that offers for sale or sells used motor vehicles incidental to its primary business, if (A) such person, firm or corporation is licensed in accordance with the provisions of section 14-15, and (B) the motor vehicles that it offers for sale were formerly the subject of one or more lease agreements to which it was a party and the actual or prospective purchaser is the original lessee pursuant to a purchase option specified in a lease agreement. Such person shall be qualified to conduct such business in accordance with the requirements of section 14-52a.

      (3) “Repairer” includes any person, firm or corporation qualified to conduct such business in accordance with the requirements of section 14-52a, having a suitable facility and having adequate equipment, engaged in repairing, overhauling, adjusting, assembling or disassembling any motor vehicle, but shall exclude a person engaged in making repairs to tires, upholstering, glazing, general blacksmithing, welding and machine work on motor vehicle parts when parts involving such work are disassembled or reassembled by a licensed repairer.

      (4) “Limited repairer” includes any qualified person, having a suitable place of business and adequate equipment engaged in the business of minor repairs, including repairs and replacement of cooling, electrical, fuel and exhaust systems, brake adjustments, relining and repairs, wheel alignment and balancing, and repair and replacement of shock absorbers. For the purpose of this section, the place of business of a limited repairer shall be deemed to be suitable if the building in which the work of the repairer is performed has space capable of receiving at least one motor vehicle at any one time, exclusive of a grease pit or rack, and has adequate space for an office and for the storage of parts and accessories. A person shall be deemed capable of performing the duties of a limited repairer if he is, in the opinion of the commissioner, a qualified mechanic who has a thorough knowledge of the services to be rendered, or has a certificate of completion of a specialized course from a service school approved by the commissioner, or satisfactory proof of previous employment by a licensed repairer for a period of three years, or has successfully passed an examination given by the Department of Motor Vehicles.

      (b) The lubricating of motor vehicles, adding or changing of oil or other motor vehicle fluids, changing of tires and tubes, including the balancing of wheels, or installing of batteries or light bulbs, windshield wiper blades or drive belts shall not be construed as the repairing of motor vehicles under the provisions of this subpart (D).