PART 12

FINAL REGULATION ORDER TEST PROCEDURES

Large Spark-Ignition Engines

(2007 and Later Model Years; Part 1065/1068)
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FINAL REGULATION ORDER TEST PROCEDURES

Note: This document incorporates by reference 40 Code of Federal Regulations 

(CFR) Part 1065 – Engine-Testing Procedures, Subparts A, B, C, D, E, F, G, H, 

I, J, and K, as amended July 13, 2005, 40 CFR Part 1068, Subparts A, B, C, D, 

E, F, and G, including Appendix A to Subpart E and Appendix I and II to part 

1068, as amended July 13, 2005, and the internally referenced subparts of 40 

CFR Part 85, 40 CFR Part 86, and 40 CFR Part 1048. These amendments are 

formatted in a style to indicate changes from the existing test procedures. All 

existing language is indicated by plain type. All additions to the existing 

language are indicated by underlined type. All deletions to the existing 

language are indicated by strikeout. Only those sections containing the 

modifications from the existing language are included. All other portions remain 

unchanged and are indicated by the notation [ * * * * * ] for reference. If there 

is any conflict between the provisions of this document and the California 

Health and Safety Code, Division 26, or Title 13 of the California Code of 

Regulations (CCR), the Health and Safety Code and Title 13 apply.
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State of California

AIR RESOURCES BOARD

CALIFORNIA EXHAUST AND EVAPORATIVE EMISSION STANDARDS

AND TEST PROCEDURES FOR NEW 2007 AND LATER OFF-ROAD LARGE

SPARK-IGNITION ENGINES

(Test Procedures 1065 and 1068)

Adopted: March 2, 2007

Amended: October 25, 2012
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CALIFORNIA EXHAUST EMISSION STANDARDS AND TEST PROCEDURES FOR 

NEW 2007 AND LATER OFF-ROAD LARGE SPARK-IGNITION ENGINES

The following provisions of Part 1065, and Part 1068, Title 40, Code of Federal 

Regulations, as proposed by the United States Environmental Protection Agency on the 

date listed, are adopted and incorporated herein by this reference for 2007 model year 

and later off-road large spark-ignition engines as the California Exhaust Emission 

Standards and Test Procedures for New 2007 and Later Off-Road Large Spark-Ignition 

Engines, except as altered or replaced by the provisions set forth below.

PART 1065 – ENGINE-TESTING PROCEDURES

SOURCE: 70 FR 40516, July 13, 2005, unless otherwise noted.

* * * * *

Subpart H –Engine Fluids, Test Fuels, Analytical Gases and Other Calibration

Standards

§ 1065.701 General requirements for test fuels.

(a) (1) Except as allowed in (2), Iif the engine is a gasoline-fueled large spark-ignition 

engine, then the test fuel used shall be consistent with the fuel specifications as outlined 

in the “California Exhaust Emission Standards and Test Procedures for 2001 and 

Subsequent Model Passenger Cars, Light-Duty Trucks, and Medium-Duty Vehicles,” as 

adopted August 5, 1999, and last amended August 4, 2005, and incorporated by 

reference herein. The California fuel specifications are contained in the California Code

of Regulations, Title 13, Chapter 5, Article 1, Sections 2260-2272. If the engine is 

tested using the U.S. EPA test fuel, consistent with the fuel specifications as outlined in 

Title 40 Code of Federal Register, Part 1065, subpart H, the manufacturer shall 

demonstrate that the emission test results complies with these Test Procedures.

(2) For 2013-2019 model-year gasoline-fueled, large spark-ignition engines, the 

manufacturer has the option to use the fuel specified in (a)(3).

(3) For 2020 and later gasoline-fueled, large spark-ignition engines: The certification 

test fuel for exhaust emission testing must be consistent with the fuel specifications as 

outlined in title 13, section 1961.2 and the “California 2015 and Subsequent Model 

Criteria Pollutant Exhaust Emission Standards and Test Procedures and 2017 and 

Subsequent Model Greenhouse Gas Exhaust Emission Standards and Test Procedures 

for Passenger Cars, Light-Duty Trucks, and Medium-Duty Vehicles,” adopted <insert 

adoption date>, and incorporated by reference herein. The test fuel specifications 

should remain consistent from batch to batch. Optionally, manufacturers may use other 

renewable fuel blends under this paragraph that have been certified by ARB as yielding 
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test results equivalent, or more stringent than, those resulting from the fuel specified by 

13 CCR 1961.2, and which are appropriate for the certification of large spark-ignition 

engines.

(2)(4) If the engine is not a gasoline-fueled large spark-ignition engine, then the test fuel 

used shall be consistent with the fuel specifications as outlined in the “California 

Exhaust Emission Standards and Test Procedures for 2001 and Subsequent Model 

Passenger Cars, Light-Duty Trucks, and Medium- Duty Vehicles,” as adopted August 5, 

1999, and last amended August 4, 2005, and incorporated by reference herein. The 

California fuel specifications are contained in the California Code of Regulations, Title 

13, Chapter 5, Article 3, Sections 2290-2293.5. If the engine is tested using the U.S. 

EPA test fuel, consistent with the fuel specifications as outlined in Title 40 Code of 

Federal Register, Part 1065, subpart H, the manufacturer shall demonstrate that the 

emission test results complies with these Test Procedures.

* * * * *

§ 1065.710 Gasoline.

* * * * *

(b) Up to and including the 2012 model year, Tthere are two grades of gasoline 

specified for use as a test fuel. If the standard-setting part requires testing with fuel 

appropriate for low temperatures, use the test fuel specified for low-temperature testing. 

Otherwise, use the test fuel specified for general testing. The two grades are specified 

in Table 1 of this section.

* * * * *