40 CFR §1068.215

1. (a)You are eligible for this exemption for manufacturer-owned engines/equipment only if you are a certificate holder. Any engine for which you meet all applicable requirements under this section is exempt without request.
2. (b)Engines/equipment may be exempt without a request if they are nonconforming engines/equipment under your ownership, possession, and control and you do not operate them for purposes other than to develop products, assess production methods, or promote your engines/equipment in the marketplace, or other purposes we approve. You may not loan, lease, sell, or use the engine/equipment to generate revenue, either by itself or for an engine installed in a piece of equipment, except as allowed by § 1068.201(i). Note that this paragraph (b) does not prevent the sale or shipment of a partially complete engine to a secondary engine manufacturer that will meet the requirements of this paragraph (b). See § 1068.262 for provisions related to shipping partially complete engines to secondary engine manufacturers.
3. (c)To use this exemption, you must do three things:
   1. (1)Establish, maintain, and keep adequately organized and indexed information on all exempted engines/equipment, including the engine/equipment identification number, the use of the engine/equipment on exempt status, and the final disposition of any engine/equipment removed from exempt status.
   2. (2)Let us access these records, as described in § 1068.20.
   3. (3)Add a permanent label to all engines/equipment exempted under this section, consistent with § 1068.45, with at least the following items:
      1. (i)The label heading “EMISSION CONTROL INFORMATION”.
      2. (ii)Your corporate name and trademark.
      3. (iii)Family identification and model year of the engine/equipment (as applicable), or whom to contact for further information.
      4. (iv)The statement: “THIS [engine, equipment, vehicle, etc.] IS EXEMPT UNDER 40 CFR 1068.210 OR 1068.215 FROM EMISSION STANDARDS AND RELATED REQUIREMENTS.”