§ 90.1 - Applicability.

Subpart A - General

§ 90.2 - Effective dates.

§ 90.3 - Definitions.

§ 90.4 - Treatment of confidential information.

§ 90.5 - Acronyms and abbreviations.

§ 90.6 - Table and figure numbering; position.

§ 90.7 - Reference materials.

Subpart B - Emission Standards and Certification Provisions

§ 90.101 - Applicability.

§ 90.102 - Definitions.

§ 90.103 - Exhaust emission standards.

§ 90.104 - Compliance with emission standards.

§ 90.105 - Useful life periods for Phase 2 engines.

§ 90.106 - Certificate of conformity.

§ 90.107 - Application for certification.

§ 90.108 - Certification.

§ 90.109 - Requirement of certification - closed crankcase.

§ 90.110 - Requirement of certification - prohibited controls.

§ 90.111 - Requirement of certification - prohibition of defeat devices.

§ 90.112 - Requirement of certification - adjustable parameters.

§ 90.113 - In-use testing program for Phase 1 engines.

§ 90.114 - Requirement of certification - engine information label.

§ 90.115 - Requirement of certification - supplying production engines upon request.

§ 90.116 - Certification procedure - determining engine displacement, engine class, and engine families.

§ 90.117 - Certification procedure - test engine selection.

§ 90.118 - Certification procedure - service accumulation and usage of deterioration factors.

§ 90.119 - Certification procedure - testing.

§ 90.120 - Certification procedure - use of special test procedures.

§ 90.121 - Certification procedure - recordkeeping.

§ 90.122 - Amending the application and certificate of conformity.

§ 90.123 - Denial, revocation of certificate of conformity.

§ 90.124 - Request for hearing.

§ 90.125 - Hearing procedures.

§ 90.126 - Right of entry and access.

§ 90.127 - Fuel line permeation from nonhandheld engines and equipment.

§ 90.128 - Installation instructions.

§ 90.129 - Fuel tank permeation from handheld engines and equipment.

Subpart C - Certification Averaging, Banking, and Trading Provisions

§ 90.201 - Applicability.

§ 90.202 - Definitions.

§ 90.203 - General provisions.

§ 90.204 - Averaging.

§ 90.205 - Banking.

§ 90.206 - Trading.

§ 90.207 - Credit calculation and manufacturer compliance with emission standards.

§ 90.208 - Certification.

§ 90.209 - Maintenance of records.

§ 90.210 - End-of-year and final reports.

§ 90.211 - Request for hearing.

§ 90.212 - Optional transition year averaging, banking, and trading program for Phase 2 handheld engines.

§ 90.213 - Averaging under the optional program.

§ 90.214 - Banking under the optional program.

§ 90.215 - Trading under the optional program.

§ 90.216 - Credit calculation and manufacturer compliance with emission standards under the optional program.

§ 90.217 - Certification under the optional program.

§ 90.218 - Maintenance of records under the optional program.

§ 90.219 - End-of-year and final reports under the optional program.

§ 90.220 - Request for hearing.

Subpart D - Emission Test Equipment Provisions

§ 90.301 - Applicability.

§ 90.302 - Definitions.

§ 90.303 - Symbols, acronyms, abbreviations.

§ 90.304 - Test equipment overview.

§ 90.305 - Dynamometer specifications and calibration accuracy.

§ 90.306 - Dynamometer torque cell calibration.

§ 90.307 - Engine cooling system.

§ 90.308 - Lubricating oil and test fuels.

§ 90.309 - Engine intake air temperature measurement.

§ 90.310 - Engine intake air humidity measurement.

§ 90.311 - Test conditions.

§ 90.312 - Analytical gases.

§ 90.313 - Analyzers required.

§ 90.314 - Analyzer accuracy and specifications.

§ 90.315 - Analyzer initial calibration.

§ 90.316 - Hydrocarbon analyzer calibration.

§ 90.317 - Carbon monoxide analyzer calibration.

§ 90.318 - Oxides of nitrogen analyzer calibration.

§ 90.319 - NOX converter check.

§ 90.320 - Carbon dioxide analyzer calibration.

§ 90.321 - NDIR analyzer calibration.

§ 90.322 - Calibration of other equipment.

§ 90.323 - Analyzer bench checks.

§ 90.324 - Analyzer leakage check.

§ 90.325 - Analyzer interference checks.

§ 90.326 - Pre- and post-test analyzer calibration.

§ 90.327 - Sampling system requirements.

§ 90.328 - Measurement equipment accuracy/calibration frequency table.

§ 90.329 - Catalyst thermal stress test.

Appendix A to Subpart D of Part 90 - Tables

Appendix B to Subpart D of Part 90 - Figures

Subpart E - Gaseous Exhaust Test Procedures

§ 90.401 - Applicability.

§ 90.402 - Definitions.

§ 90.403 - Symbols, acronyms, and abbreviations.

§ 90.404 - Test procedure overview.

§ 90.405 - Recorded information.

§ 90.406 - Engine parameters to be measured and recorded.

§ 90.407 - Engine inlet and exhaust systems.

§ 90.408 - Pre-test procedures.

§ 90.409 - Engine dynamometer test run.

§ 90.410 - Engine test cycle.

§ 90.411 - Post-test analyzer procedures.

§ 90.412 - Data logging.

§ 90.413 - Exhaust sample procedure - gaseous components.

§ 90.414 - Raw gaseous exhaust sampling and analytical system description.

§ 90.415 - Raw gaseous sampling procedures.

§ 90.416 - Intake air flow measurement specifications.

§ 90.417 - Fuel flow measurement specifications.

§ 90.418 - Data evaluation for gaseous emissions.

§ 90.419 - Raw emission sampling calculations - gasoline fueled engines.

§ 90.420 - CVS concept of exhaust gas sampling system.

§ 90.421 - Dilute gaseous exhaust sampling and analytical system description.

§ 90.422 - Background sample.

§ 90.423 - Exhaust gas analytical system; CVS grab sample.

§ 90.424 - Dilute sampling procedures - CVS calibration.

§ 90.425 - CVS calibration frequency.

§ 90.426 - Dilute emission sampling calculations - gasoline fueled engines.

§ 90.427 - Catalyst thermal stress resistance evaluation.

Appendix A to Subpart E of Part 90 - Tables

Appendix B to Subpart E of Part 90 - Figures

Subpart F - Selective Enforcement Auditing

§ 90.501 - Applicability.

§ 90.502 - Definitions.

§ 90.503 - Test orders.

§ 90.504 - Testing by the Administrator.

§ 90.505 - Maintenance of records; submittal of information.

§ 90.506 - Right of entry and access.

§ 90.507 - Sample selection.

§ 90.508 - Test procedures.

§ 90.509 - Calculation and reporting of test results.

§ 90.510 - Compliance with acceptable quality level and passing and failing criteria for selective enforcement audits.

§ 90.511 - Suspension and revocation of certificates of conformity.

§ 90.512 - Request for public hearing.

§ 90.513 - Administrative procedures for public hearing.

§ 90.514 - Hearing procedures.

§ 90.515 - Appeal of hearing decision.

§ 90.516 - Treatment of confidential information.

Appendix A to Subpart F of Part 90 - Sampling Plans for Selective Enforcement Auditing of Small Nonroad Engines

Subpart G - Importation of Nonconforming Engines

§ 90.601 - Applicability.

§ 90.602 - Definitions.

§ 90.603 - [Reserved]

§ 90.604 - General requirements.

§ 90.611 - Importation for purposes other than resale.

§ 90.612 - Exemptions and exclusions.

§ 90.613 - Prohibited acts; penalties.

§ 90.614 - Treatment of confidential information.

§ 90.615 - Model year restrictions related to imported engines and equipment.

§§ 90.605--90.610 - [Reserved]

Subpart H - Manufacturer Production Line Testing Program

§ 90.701 - Applicability.

§ 90.702 - Definitions.

§ 90.703 - Production line testing by the manufacturer.

§ 90.704 - Maintenance of records; submission of information.

§ 90.705 - Right of entry and access.

§ 90.706 - Engine sample selection.

§ 90.707 - Test procedures.

§ 90.708 - Cumulative Sum (CumSum) procedure.

§ 90.709 - Calculation and reporting of test results.

§ 90.710 - Compliance with criteria for production line testing.

§ 90.711 - Suspension and revocation of certificates of conformity.

§ 90.712 - Request for public hearing.

§ 90.713 - Administrative procedures for public hearing.

Subpart I - Emission-Related Defect Reporting Requirements, Voluntary Emission Recall Program, Ordered Recalls

§ 90.801 - Applicability.

§ 90.802 - Definitions.

§ 90.803 - Emission defect information report.

§ 90.804 - Voluntary emissions recall.

§ 90.805 - Reports, voluntary recall plan filing, record retention.

§ 90.806 - Responsibility under other legal provisions preserved.

§ 90.807 - Disclaimer of production warranty applicability.

§ 90.808 - Ordered recall provisions.

Subpart J - Exclusion and Exemption of Nonroad Engines from Regulations

§ 90.901 - Applicability.

§ 90.902 - Definitions.

§ 90.903 - Exclusions, application of section 216 (10) and (11) of the Act.

§ 90.904 - Who may request an exemption.

§ 90.905 - Testing exemption.

§ 90.906 - Manufacturer-owned exemption and precertification exemption.

§ 90.907 - Display exemption.

§ 90.908 - National security exemption.

§ 90.909 - Export exemptions.

§ 90.910 - Granting of exemptions.

§ 90.911 - Submission of exemption requests.

§ 90.912 - Treatment of confidential information.

§ 90.913 - Exemption for engines certified to standards for large SI engines.

Subpart K - Prohibited Acts and General Enforcement Provisions

§ 90.1001 - Applicability.

§ 90.1002 - Definitions.

§ 90.1003 - Prohibited acts.

§ 90.1004 - General enforcement provisions.

§ 90.1005 - Injunction proceedings for prohibited acts.

§ 90.1006 - Penalties.

§ 90.1007 - Bonding requirements related to compliance, enforcement, and warranty assurance.

Subpart L - Emission Warranty and Maintenance Instructions

§ 90.1101 - Applicability.

§ 90.1102 - Definitions.

§ 90.1103 - Emission warranty, warranty period.

§ 90.1104 - Furnishing of maintenance instructions to ultimate purchaser.

Subpart M - Voluntary In-Use Testing

§ 90.1201 - Applicability.

§ 90.1202 - Definitions.

§ 90.1203 - Voluntary Manufacturer In-Use Testing Program.

§ 90.1204 - Maintenance, aging and testing of engines.

§ 90.1205 - In-use test program reporting requirements.

§ 90.1206 - [Reserved]

§ 90.1207 - Entry and access.

§§ 90.1208--90.1249 - [Reserved]

§§ 90.2--90.3 - [Reserved]