PART 11

FINAL REGULATION ORDER

In-Use Compliance Requirements

for Retrofits of Large Spark-Ignition Engines

Title 13 

California Code of Regulations

Sections 2783 and 2784
This Page Left Intentionally Blank
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FINAL REGULATION ORDER

Note: This document is written in a style to indicate changes from the existing 

provisions. All existing regulatory language is indicated by plain type. All 

additions to the regulatory language are indicated by underlined type. All 

deletions to the regulatory language are indicated by strikeout. Only those 

portions containing modifications from existing provisions are included. All 

other portions remain unchanged and are indicated by the symbol [ * * * * * ] for 

reference.

Article 3. Verification Procedure, Warranty, and In-Use Compliance Requirements 

for Retrofits to Control Emissions from Off-Road Large Spark-Ignition Engines

Amend §§ 2783 and 2784, title 13, California Code of Regulations, to read as follows:

§ 2783. Emissions Reduction Testing Requirements.

* * * * *

(d) Test Fuel.

(1) 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 

incorporated by reference in section 1961(d). If the engine is tested using the U.S. EPA 

test fuel, as outlined in 40 CFR Part 1065, the manufacturer shall demonstrate that the 

emission results are consistent with these Test Procedures.

(2) Gasoline-fueled, large spark-ignition engines that are tested during the 2013-2019

calendar years have the option of using the test fuel referenced in section 2783(d)(3) for 

demonstrating exhaust emission compliance with the requirements of this section.

(3) Gasoline-fueled, large spark-ignition engines that are tested during 2020 and later 

calendar years must be exhaust emission tested using a test fuel that is 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 MediumDuty Vehicles,” adopted March 22, 2012, which is 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 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.
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(2)(4) During all engine tests, the engine shall employ lubricating oil consistent with the 

engine manufacturer's specifications for that particular engine. These specifications 

shall be recorded and declared in the verification application.

* * * * *

NOTE: Authority cited: Sections 39002, 39003, 39500, 39600, 39601, 39650-39675, 40000, 43000, 

43000.5, 43011, 43013, 43018, 43105, 43600 and 43700, Health and Safety Code. Reference:

Sections: 43000, 43009.5, 43013, 43018, 43101, 43104, 43105, 43106, 43107, 43204, 43205 

and 43205.5, Health and Safety Code.

§ 2784. Durability Demonstration Requirements.

* * * * *

(c) Test Fuel.

(1) Except as outlined in (c)(2), Tthe 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 incorporated by reference in section 1961(d). If the engine 

is tested using the U.S. EPA test fuel, as outlined in 40 CFR Part 1065, the 

manufacturer shall demonstrate that the emission results are consistent with ARB Test 

Procedures. Manufacturers can use “commercially available fuels” to accumulate 

service hours but emission testing must be conducted using test fuel as specified in this 

section.

(2) Gasoline-fueled, large spark-ignition engines that are tested during the 2013-2019

calendar years have the option of using the test fuel referenced in section 2784(c)(3) for 

demonstrating exhaust emission compliance with the requirements of this section.

(3) Gasoline-fueled, large spark-ignition engines that are tested during 2020 and later 

calendar years must be exhaust emission tested using a test fuel that is 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 MediumDuty Vehicles,” adopted March 22, 2012, which is 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 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.
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(2)(4) During all engine tests, the engine shall employ lubricating oil consistent with the 

engine manufacturer's specifications for that particular engine. These specifications 

shall be recorded and declared in the verification application.

* * * * *

NOTE: Authority cited: 39002, 39003, 39500, 39600, 39601, 39650-39675, 40000, 43000, 43000.5, 

43011, 43013, 43018, 43105, 43600 and 43700, Health and Safety Code. Reference:

Sections: 43000, 43009.5, 43013, 43018, 43101, 43104, 43105, 43106, 43107, 43204, 43205 

and 43205.5, Health and Safety Code.