[Code of Federal Regulations]
[Title 40, Volume 30]
[Revised as of July 1, 2004]
From the U.S. Government Printing Office via GPO Access
[CITE: 40CFR1048.220]

[Page 557]
 
                   TITLE 40--PROTECTION OF ENVIRONMENT
 
         CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)
 
PART 1048_CONTROL OF EMISSIONS FROM NEW, LARGE NONROAD SPARK-IGNITION 
ENGINES--Table of Contents
 
                  Subpart C_Certifying Engine Families
 
Sec. 1048.220  How do I amend the maintenance instructions in my application?

    Send the Designated Officer a request to amend your application for 
certification for an engine family if you want to change the emission-
related maintenance instructions in a way that could affect emissions. 
In your request, describe the proposed changes to the maintenance 
instructions.
    (a) If you are decreasing the specified level of maintenance, you 
may distribute the new maintenance instructions to your customers 30 
days after we receive your request, unless we disapprove your request. 
We may approve a shorter time or waive this requirement.
    (b) If your requested change would not decrease the specified level 
of maintenance, you may distribute the new maintenance instructions 
anytime after you send your request.
    (c) If you are correcting or clarifying your maintenance 
instructions or if you are changing instructions for maintenance 
unrelated to emission controls, the requirements of this section do not 
apply.