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It's the Law

Backfire Flame Arrestors

IC 14-15-2-3
Carburetor backfire arrest device

Sec. 3. The carburetor on an inboard motorboat must be equipped with a stock factory device:

  1. designed and constructed to arrest backfire; and
  2. of a make or type approved by the United States Coast Guard.

As added by P.L.1-1995, SEC.8.


Backfire flame arrestor
Backfire flame arrestor

Backfire flame arrestors are designed to prevent the ignition of gasoline vapors in case the engine backfires.

All powerboats (except outboards) that are fueled with gasoline must have a U.S. Coast Guard–approved backfire flame arrestor on each carburetor.

Periodically clean the flame arrestor and check for damage.