Forklifts, Generators, and Compressors (gasoline/propane)
This page provides regulations and guidance documents for nonroad spark-ignition (SI) engines over 19 kW (25 horsepower), including many kinds of equipment, such as forklifts, generators, and many other farm, industrial and construction applications. These engines may operate on propane, gasoline, or natural gas. Information on marine propulsion engines is available on the Gasoline Boats and Personal Watercraft page. Information on spark-ignition engines for recreational vehicles is on the Snowmobiles, Dirt Bikes and ATVs page. Information on smaller nonroad spark-ignition engines is on the Lawn and Garden (small gasoline equipment) page.
NOTE: You will need Adobe Acrobat Reader, available as a free download, to view some of the files on this page. See EPA's PDF page to learn more about PDF, and for a link to the free Acrobat Reader.
Regulations and Related Documents
- See the Electronic Code of Federal Regulations (e-CFR) for the full text of current regulations that apply to Large SI engines:
40 CFR part 1048 Emission standards and certification requirements 40 CFR part 1060 Evaporative emission standards and test procedures 40 CFR part 1065 Exhaust emission test procedures (for lab and in-field testing) 40 CFR part 1068 General Compliance Provisions - Summary of emission standards
- Guidance Documents
- Certification Guidance Presentation (PDF) (46 pp, 800K, April 10, 2003)
- Instructions for Certifying Imported Mini Trucks (PDF) (16 pp, 358K, EPA420-B-09-028, June 2009)
- Final 2010 Technical Amendments (published April 30, 2010)
- Federal Register Notice
- See Marine Diesel final rule for more information. See especially Chapter 11 of the Summary and Analysis of Comments.
- Greenhouse Gas Reporting Rule (published October 30, 2009)
- Federal Register Notice
- See Greenhouse Gas Reporting for more information.
- Final 2008 Technical Amendments (published October 8, 2008)
- Federal Register Notice
- See Bond final rule for more information
- Final Emission Standards for Stationary Spark-ignition Engines (published January 18, 2008)
- Federal Register Notice | PDF Version (53 pp, 709K )
- See Stationary SI Engines for more information
- Final 2005 Technical Amendments – Procedures for Testing Highway and Nonroad Engines and Omnibus Technical Amendments (published July 13, 2005)
- Fact Sheet: Regulatory Announcement: Changed Test Procedures for Nonroad Engines and Heavy-Duty Highway Engines (PDF) (4 pp, 134K, EPA420-F-05-036, July 2005)
- Federal Register Notice
- Technical Support Document and Summary & Analysis of Comments (PDF) (115 pp, 1663K, EPA420-R-05-008, June 2005)
- See Proposed Technical Amendments for the proposed rule, fact sheet, and technical support documents (published September 10, 2004)
- Final Emission Standards (published November 8, 2002)
- Fact sheet: Emission Standards for New Nonroad Engines Large Industrial Spark-ignition Engines, Recreational Marine Diesel Engines, and Recreational Vehicles (PDF) (7 pp, 409K, EPA420-F-02-037, September 2002)
- Federal Register Notice | PDF Version (207 pp, 1.10MB, published November 8, 2002)
- Summary and Analysis of Comments (PDF) (1MB, EPA420-R-02-023)
- Final Regulatory Support Document (PDF) (2.5MB, EPA420-R-02-022)
- Regulatory Support Document by Chapter
- Environmental Impacts of Newly Regulated Nonroad Engines (PDF) (24K, EPA420-F-02-033)
- Frequently Asked Questions from Facility Managers and other Owners of Industrial Spark-ignition Engines (PDF) (399K, EPA420-F-02-041)
- How to Maintain or Rebuild Engines Certified to EPA Standards (PDF) (6 pp, 407K, EPA420-F-02-035, September 2002)
- Emission Regulations for Stationary and Mobile Engines (PDF) (6 pp, 479K, EPA420-F-02-034, September 2002)
- Blue Sky Series Engines (PDF) (3 pp, 396K, EPA420-F-02-036, September 2002)
- Plain-Language Format of Emission Regulations for Nonroad Engines (PDF) (6 pp, 405K, EPA420-F-02-046, September 2002)
- Large SI transient duty cycles (XLS) (2 pp, 144K, updated 2010)
- Docket index (PDF) (141 pp, 689K, September 13, 2002)
- "Evaluation of Emissions Durability of Nonroad LPG Engines Equipped with Three-Way Catalysts" Final Report from Southwest Research Institute. Paper copies of this document are available from the National Technical Information Service (NTIS) Publication #PB2002101191.
- Other documents regarding the final rule are available at http://www.epa.gov/otaq/regs/nonroad/2002/cleanrec-final.htm
- See Proposed Emission Standards for the proposed rule, supporting documents, advance notice and findings.
- Nonroad Engine and Vehicle Emission Study Report (Publication no. EPA-21A-2001 or EPA460/3-91-002, November 1991)
This "nonroad study" quantifies the contribution of nonroad sources to air pollution, including volatile organic compounds (VOCs), oxides of nitrogen (NOx), carbon monoxide (CO), and particulate matter (PM). The study covers 10 equipment categories, including: lawn and garden equipment, farm and construction equipment, recreational vehicles, marine vessels, and airport service equipment.- Body of report (PDF) (1.8MB)
- Appendices (PDF) (7.7MB)
Related Links:
- Emission Standards Reference Guide
- Engine Certification Information Center
- Stationary Spark-ignition Engines
- Lawn and Garden (Small Gasoline) Equipment
- Snowmobiles, Dirt Bikes, and ATVs
- Gasoline Boats and Personal Watercraft
- Diesel Equipment (farm, construction, ...)
- Certification Fees
- Importing Vehicles and Engines