# 40 CFR § 1054.103: What exhaust emission standards must my handheld engines meet?

> Federal · Regulations · In force

URL: https://www.frixlaw.com/law-library/statutes/ecfr-40-1054.103

## Section

- **Citation:** 40 CFR § 1054.103
- **Heading:** What exhaust emission standards must my handheld engines meet?
- **Jurisdiction:** Federal
- **Kind:** Regulations
- **Status:** In force
- **Text as of:** September 22, 2026
- **Source:** Publisher's official text
- **Location:** Title 40—Protection of Environment > CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY > SUBCHAPTER U—AIR POLLUTION CONTROLS > PART 1054—CONTROL OF EMISSIONS FROM NEW, SMALL NONROAD SPARK-IGNITION ENGINES AND EQUIPMENT > Subpart B—Emission Standards and Related Requirements

## Text

(a) Emission standards. Exhaust emissions from your handheld engines may not exceed the emission standards in Table 1 to this section. Measure emissions using the applicable steady-state test procedures described in subpart F of this part.
Table 1 to § 1054.103—Phase 3 Emission Standards for Handheld Engines (g/kW-hr)
Engine displacement class
HC + NOX
CO
Class III
50
805
Class IV
50
805
Class V
72
603
(b) Averaging, banking, and trading. You may generate or use emission credits under the averaging, banking, and trading (ABT) program for HC + NOX emissions as described in subpart H of this part. You may not generate or use emission credits for CO emissions. To generate or use emission credits, you must specify a family emission limit for each engine family you include in the ABT program. These family emission limits serve as the emission standards for the engine family with respect to all required testing instead of the standards specified in this section. An engine family meets emission standards even if its family emission limit is higher than the standard, as long as you show that the whole averaging set of applicable engine families meets the emission standards using emission credits and the engines within the family meet the family emission limit. The following FEL caps are the maximum values you may specify for family emission limits:
(1) 336 g/kW-hr for Class III engines.
(2) 275 g/kW-hr for Class IV engines.
(3) 186 g/kW-hr for Class V engines.
(c) Fuel types. The exhaust emission standards in this section apply for engines using the fuel type on which the engines in the emission family are designed to operate. You must meet the numerical emission standards for hydrocarbon in this section based on the following types of hydrocarbon emissions for engines powered by the following fuels:
(1) Alcohol-fueled engines: THCE emissions.
(2) Natural gas-fueled engines: NMHC emissions.
(3) Other engines: THC emissions.
(d) Useful life. Your engines must meet the exhaust emission standards in paragraph (a) of this section over their full useful life as described in § 1054.107.
(e) Applicability for testing. The emission standards in this subpart apply to all testing, including certification, production-line, and in-use testing.
[73 FR 59259, Oct. 8, 2008, as amended at 86 FR 34517, June 29, 2021]

## Nearby sections

- [40 CFR § 1054.1 § 1054.1 Does this part apply for my engines and equipment?](https://www.frixlaw.com/law-library/statutes/ecfr-40-1054.1.md)
- [40 CFR § 1054.2 § 1054.2 Who is responsible for compliance?](https://www.frixlaw.com/law-library/statutes/ecfr-40-1054.2.md)
- [40 CFR § 1054.5 § 1054.5 Which nonroad engines are excluded from this part's requirements?](https://www.frixlaw.com/law-library/statutes/ecfr-40-1054.5.md)
- [40 CFR § 1054.10 § 1054.10 How is this part organized?](https://www.frixlaw.com/law-library/statutes/ecfr-40-1054.10.md)
- [40 CFR § 1054.15 § 1054.15 Do any other CFR parts apply to me?](https://www.frixlaw.com/law-library/statutes/ecfr-40-1054.15.md)
- [40 CFR § 1054.20 § 1054.20 What requirements apply to my equipment?](https://www.frixlaw.com/law-library/statutes/ecfr-40-1054.20.md)
- [40 CFR § 1054.30 § 1054.30 Submission of information.](https://www.frixlaw.com/law-library/statutes/ecfr-40-1054.30.md)
- [40 CFR § 1054.101 § 1054.101 What emission standards and requirements must my engines meet?](https://www.frixlaw.com/law-library/statutes/ecfr-40-1054.101.md)
- [40 CFR § 1054.103 § 1054.103 What exhaust emission standards must my handheld engines meet?](https://www.frixlaw.com/law-library/statutes/ecfr-40-1054.103.md)
- [40 CFR § 1054.105 § 1054.105 What exhaust emission standards must my nonhandheld engines meet?](https://www.frixlaw.com/law-library/statutes/ecfr-40-1054.105.md)
- [40 CFR § 1054.107 § 1054.107 What is the useful life period for meeting exhaust emission standards?](https://www.frixlaw.com/law-library/statutes/ecfr-40-1054.107.md)
- [40 CFR § 1054.110 § 1054.110 What evaporative emission standards must my handheld equipment meet?](https://www.frixlaw.com/law-library/statutes/ecfr-40-1054.110.md)
- [40 CFR § 1054.112 § 1054.112 What evaporative emission standards must my nonhandheld equipment meet?](https://www.frixlaw.com/law-library/statutes/ecfr-40-1054.112.md)
- [40 CFR § 1054.115 § 1054.115 What other requirements apply?](https://www.frixlaw.com/law-library/statutes/ecfr-40-1054.115.md)

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Source: Frix Law Library, https://www.frixlaw.com/law-library/statutes/ecfr-40-1054.103. Check the current official text before relying on it. Not legal advice.