The Handbook of Michigan Boating Laws and Responsibilities
The Official Boating Handbook of the Michigan Department of Natural Resources - Web Version
Table of Contents
Because vessel engines may backfire, all powerboats (except outboards) that are fueled with gasoline must have a USCG–approved (comply with SAE J–1928 or UL 1111 standards) backfire flame arrestor on each carburetor.
Periodically clean the flame arrestor(s) and check for any damage.