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§91.1 Applicability.
§91.2 Applicable date.
§91.3 Definitions.
§91.4 Acronyms and abbreviations.
§91.5 Table and figure numbering; position.
§91.6 Reference materials.
§91.7 Treatment of confidential information.
§91.101 Applicability.
§91.102 Definitions.
§91.103 Averaging, banking, and trading of exhaust
emission credits.
§91.104 Exhaust emission standards for outboard and
personal watercraft engines.
§91.105 Useful life period, recall, and warranty
periods.
§91.106 Certificate of conformity.
§91.107 Application for certification.
§91.108 Certification.
§91.109 Requirement of certification -- closed
crankcase.
§91.110 Requirement of certification -- prohibited
controls.
§91.111 Requirement of certification -- prohibition of
defeat devices.
§91.112 Requirement of certification -- adjustable
parameters.
§91.113 Requirement of certification -- emission
control information label and engine identification number.
§91.114 Requirement of certification -- supplying
production engines upon request.
§91.115 Certification procedure -- determining engine
power and engine families.
§91.116 Certification procedure -- test engine
selection.
§91.117 Certification procedure -- service
accumulation.
§91.118 Certification procedure -- testing.
§91.119 Certification procedure -- use of special test
procedures.
§91.120 Compliance with Family Emission Limits over
useful life.
§91.121 Certification procedure -- recordkeeping.
§91.122 Amending the application and certificate of
conformity.
§91.123 Denial, revocation of certificate of
conformity.
§91.124 Request for hearing.
§91.125 Hearing procedures.
§91.126 Right of entry and access.
§91.201 Applicability.
§91.202 Definitions.
§91.203 General provisions.
§91.204 Averaging.
§91.205 Banking.
§91.206 Trading.
§91.207 Credit calculation and manufacturer compliance
with emission standards.
§91.208 Certification.
§91.209 Maintenance of records.
§91.210 End-of-year and final reports.
§91.211 Notice of opportunity for hearing.
§91.301 Scope; applicability.
§91.302 Definitions.
§91.303 Acronyms and abbreviations.
§91.304 Test equipment overview.
§91.305 Dynamometer specifications and calibration
accuracy.
§91.306 Dynamometer torque cell calibration.
§91.307 Engine cooling system.
§91.308 Lubricating oil and test fuel.
§91.309 Engine intake air temperature measurement.
§91.310 Engine intake air humidity measurement.
§91.311 Test conditions.
§91.312 Analytical gases.
§91.313 Analyzers required.
§91.314 Analyzer accuracy and specifications.
§91.315 Analyzer initial calibration.
§91.316 Hydrocarbon analyzer calibration.
§91.317 Carbon monoxide analyzer calibration.
§91.318 Oxides of nitrogen analyzer calibration.
§91.319 NO
§91.320 Carbon dioxide analyzer calibration.
§91.321 NDIR analyzer calibration.
§91.322 Calibration of other equipment.
§91.323 Analyzer bench checks.
§91.324 Analyzer leakage check.
§91.325 Analyzer interference checks.
§91.326 Pre- and post-test analyzer calibration.
§91.327 Sampling system requirements.
§91.328 Measurement equipment accuracy/calibration
frequency table.
§91.329 Catalyst thermal stress test.
Appendix A to Subpart D of Part 91 -- Tables
Appendix B to Subpart D of Part 91 -- Figures
§91.401 Scope; applicability.
§91.402 Definitions.
§91.403 Symbols and abbreviations.
§91.404 Test procedure overview.
§91.405 Recorded information.
§91.406 Engine parameters to be measured and recorded.
§91.407 Engine inlet and exhaust systems.
§91.408 Pre-test procedures.
§91.409 Engine dynamometer test run.
§91.410 Engine test cycle.
§91.411 Post-test analyzer procedures.
§91.412 Data logging.
§91.413 Exhaust sample procedure -- gaseous
components.
§91.414 Raw gaseous exhaust sampling and analytical
system description.
§91.415 Raw gaseous sampling procedures.
§91.416 Intake air flow measurement specifications.
§91.417 Fuel flow measurement specifications.
§91.418 Data evaluation for gaseous emissions.
§91.419 Raw emission sampling calculations.
§91.420 CVS concept of exhaust gas sampling system.
§91.421 Dilute gaseous exhaust sampling and analytical
system description.
§91.423 Exhaust gas analytical system; CVS grab
sample.
§91.424 Dilute sampling procedure -- CVS calibration.
§91.425 CVS calibration frequency.
§91.426 Dilute emission sampling calculations.
§91.427 Catalyst thermal stress resistance evaluation.
Appendix A to Subpart E of Part 91 -- Tables
Appendix B to Subpart E of Part 91 -- Figures
§91.501 Applicability.
§91.502 Definitions.
§91.503 Production line testing by the
manufacturer.
§91.504 Maintenance of records; submittal of
information.
§91.505 Right of entry and access.
§91.506 Engine sample selection.
§91.507 Test procedures.
§91.508 Cumulative Sum (CumSum) procedure.
§91.509 Calculation and reporting of test results.
§91.510 Compliance with criteria for production line
testing.
§91.511 Suspension and revocation of certificates of
conformity.
§91.512 Request for public hearing.
§91.513 Administrative procedures for public hearing.
§91.514 Hearing procedures.
§91.515 Appeal of hearing decision.
§91.516 Treatment of confidential information.
§91.601 Applicability.
§91.602 Definitions.
§91.603 Applicability of part 91, subpart F.
§91.604 Test orders.
§91.605 Testing by the Administrator.
§91.606 Sample selection.
§91.607 Test procedures.
§91.608 Compliance with acceptable quality level and
passing and failing criteria for selective enforcement audits.
Appendix A to Subpart G of Part 91 -- Sampling Plans for Selective
Enforcement Auditing of Marine Engines
§91.701 Applicability.
§91.702 Definitions.
§91.703 Admission.
§91.704 Exemptions and exclusions.
§91.705 Prohibited acts; penalties.
§91.706 Treatment of confidential information.
§91.801 Applicability.
§91.802 Definitions.
§91.803 Manufacturer in-use testing program.
§91.804 Maintenance, procurement and testing of in-use
engines.
§91.805 In-use test program reporting requirements.
§91.806 Voluntary emissions recall.
§91.901 Applicability.
§91.902 Definitions.
§91.903 Applicability to part 85, subpart T.
§91.904 Voluntary emission recall.
§91.905 Reports, voluntary recall plan filing, record
retention.
§91.906 Responsibility under other legal provisions
preserved.
§91.907 Disclaimer of production warranty
applicability.
§91.1001 Applicability.
§91.1002 Definitions.
§91.1003 Exclusions based on section 216(10) of the
Act.
§91.1004 Who may request an exemption.
§91.1005 Testing exemption.
§91.1006 Manufacturer-owned exemption and
precertification exemption.
§91.1007 Display exemption.
§91.1008 National security exemption.
§91.1009 Export exemptions.
§91.1010 Granting of exemptions.
§91.1011 Submission of exemption requests.
§91.1012 Treatment of confidential information.
§91.1101 Applicability.
§91.1102 Definitions.
§91.1103 Prohibited acts.
§91.1104 General enforcement provisions.
§91.1105 Injunction proceedings for prohibited acts.
§91.1106 Penalties.
§91.1107 Warranty provisions.
§91.1108 In-use compliance provisions.
§91.1201 Applicability.
§91.1202 Definitions.
§91.1203 Emission warranty, warranty period.
§91.1204 Furnishing of maintenance and use
instructions to ultimate purchaser.
§91.1301 Applicability.
§91.1302 Definitions.
§91.1303 General provisions.
§91.1304 Averaging.
§91.1305 Banking.
§91.1306 Trading.
§91.1307 Credit calculation.
§91.1308 Maintenance of records.
§91.1309 Reporting requirements.
§91.1310 Notice of opportunity for hearing.
