Off-Road Small Spark-Ignition Engine Emission Regulations

12 (1) In this section, adjustable parameter means a device, system or element of design that is capable of being physically 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 that are equipped with adjustable parameters shall comply with the applicable standards under these Regulations for any specification within the physically adjustable range.