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Code of Federal Regulations (Last Updated: May 6, 2024) |
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Title 40 - Protection of Environment |
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Chapter I - Environmental Protection Agency |
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SubChapter C - Air Programs |
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Part 89 - Control of Emissions from New and in-Use Nonroad Compression-Ignition Engines |
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Subpart B - Emission Standards and Certification Provisions |
§ 89.108-96 - Adjustable parameters, requirements.
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(a) Nonroad engines equipped with adjustable parameters must comply with all requirements of this subpart for any adjustment in the physically adjustable range.
(b) An operating parameter is not considered adjustable if it is permanently sealed or otherwise not normally accessible using ordinary tools.
(c) The Administrator may require that adjustable parameters be set to any specification within its adjustable range for certification, selective enforcement audit, or in-use testing to determine compliance with the requirements of this subpart.