Question 1818 Deck General

The correct answer is B) backfire flame arrestor. A carburetor is required to have a backfire flame arrestor as a safety device. This is a regulatory requirement in the US Coast Guard regulations for engine and fuel system design. The backfire flame arrestor is a device that prevents any flames from a carburetor backfire from escaping the engine compartment, which could otherwise pose a fire hazard. The other answer options are incorrect because they do not specifically address the regulatory requirement for a carburetor to have a backfire flame arrestor. Pressure release, automatic shut off, and flow valve are not the required safety device for a carburetor.