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Backfire Flame Control
Every boat with a gasoline engine installed in a vessel after 25 April 1940, except outboard motors, must be equipped with an acceptable means of backfire flame control.

Fuel injected engines withour carburetors require a backfire flame arrester over the air intack to prevent exhaust valves from back firing into the air chamber which might cause a fire or explosion. 		backfire flame arrestor diagram

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

US Coast Guard Auxiliary
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

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