[Code of Federal Regulations]
[Title 40, Volume 18]
[Revised as of July 1, 2003]
From the U.S. Government Printing Office via GPO Access
[CITE: 40CFR91.112]

[Page 304]
 
                   TITLE 40--PROTECTION OF ENVIRONMENT
 
         CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)
 
PART 91--CONTROL OF EMISSIONS FROM MARINE SPARK-IGNITION ENGINES--Table of 
Contents
 
       Subpart B--Emission Standards and Certification Provisions
 
Sec. 91.112  Requirement of certification--adjustable parameters.

    (a) Engines equipped with adjustable parameters must comply with all 
requirements of this subpart for any adjustment in the physically 
available range.
    (b) An operating parameter is not considered adjustable if it is 
permanently sealed by the manufacturer or otherwise not normally 
accessible using ordinary tools.
    (c) The Administrator may require that adjustable parameters be set 
to any specification within the adjustable range during certification, 
production line testing, selective enforcement auditing or any in-use 
testing to determine compliance with the requirements of this part.