Off-Road Compression-Ignition Engine Emission Regulations

11 (1) In this section, adjustable parameter means a device, system or element of design that is physically capable of being adjusted to affect emissions or engine performance during emission testing or normal in-use operation, but does not include devices, systems or elements of design that are permanently sealed by the engine manufacturer or that are inaccessible with the use of ordinary tools.

(2) Engines equipped with adjustable parameters must comply with the applicable standards under these Regulations for any specification within the physically adjustable range.