(a) 
         For purposes of selective enforcement audits conducted under this subpart, marine SI engines subject to provisions of subpart B of this part are subject to regulations specified in subpart F of this part, except:
     
    
        
        (1) 
         Section 91.501 does not apply.
     
    
    
    
    
        
        (5) 
         Section 91.508 does not apply.
     
    
        
        (6) 
         Paragraphs (d) and (e)(6)(v) and references to “sample sizes, N and n” of  § 91.509 do not apply.
     
    
        
        (7) 
         The introductory text in  § 91.509 does not apply. The following text applies:
     
    
         “Within 5 working days after completion of testing of all engines pursuant to a test order.”
    
    
        
        (8) 
         The introductory text of  § 91.509(e)(9) does not apply. The following text applies:
     
    
         The following signed statement and endorsement by an authorized representative of the manufacturer: