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Every powercraft shall be equipped with a muffler or muffler system that is in good working order, in constant operation, and effectively installed to prevent excessive or unusual noise.

No person shall operate or give permission to operate a powercraft in a manner to exceed the following noise levels:

  • 90 decibels on the "A" scale in a stationary sound level test prescribed by SAE J2005 (measured from one meter with engine at low idle speed when at dock or tied to another boat)
  • 75 decibels on the "A" scale measured as specified by SAE J1970 (measured from shoreline with boat in any level of operation, not less than 200 feet away)

No person shall remove, alter, or modify a muffler in a way that prevents compliance with this section. No person shall operate or allow to be operated a powercraft with an altered muffler or muffler cutout or in a manner that bypasses or reduces the effectiveness of any muffler system.