California Air Resources Board

Current Regulations

Unofficial electronic version of complete regulations and other documents

• Exhaust Emissions Regulations (sections 2400 - 2409)
• California Exhaust Emission Standards and Test Procedures for New 2013 and Later Small Off-Road Engines (Part 1054)
• California Exhaust Emission Standards and Test Procedures for New 2013 and Later Small Off-Road Engines (Part 1065)
• Evaporative Emissions Regulations (sections 2750 - 2774)
• CP-901, Certification Procedure for Evaporative Emission Control Systems on Engines With Displacement Less Than or Equal to 80 Cubic Centimeters
• CP-902, Certification Procedure for Evaporative Emission Control Systems
• TP-901, Test Procedure for Determining Permeation Emissions from Small Off‑Road Engine Fuel Tanks
• TP-902, Test Procedure for Determining Diurnal Emissions from Small Off‑Road Engines

For the official text of the small off-road engine regulations filed with the Secretary of State, visit California Code of Regulations - Westlaw.

Archive

Unofficial electronic version of complete regulations and other documents effective through December 31, 2022

• Exhaust Emissions Regulations (sections 2400 - 2409), amended October 25, 2012
• California Exhaust Emission Standards and Test Procedures for New 2013 and Later Small Off‑Road Engines (Part 1054), adopted October 25, 2012
• California Exhaust Emission Standards and Test Procedures for New 2013 and Later Small Off‑Road Engines (Part 1065), adopted October 25, 2012
• Evaporative Emissions Regulations (sections 2750 - 2774), amended May 6, 2019
• CP-901 Certification Procedure for Evaporative Emission Control Systems on Engines With Displacement Less Than or Equal to 80 Cubic Centimeters, amended September 18, 2017
• CP-902 Certification Procedure for Evaporative Emission Control Systems on Engines With Displacement Greater Than 80 Cubic Centimeters, amended September 18, 2017
• TP-901 Test Procedure for Determining Permeation Emissions from Small Off‑Road Engine Fuel Tanks, amended May 6, 2019
• TP-902 Test Procedure for Determining Diurnal Emissions from Small Off‑Road Engines, amended May 6, 2019

Rulemaking Activity