To determine what type of hose may be used for the fuel distribution line, it is necessary to:
(a) determine where, in the hose portion of the fuel line, maximum drainage could occur.
(b) cut the hose at the maximum drainage point. The intent is to cut the hose completely through and then support the hose at both sides of the cut at their original location.
(c) measure the fuel leakage from this opening in the fuel hose for a period of 2-1/2 minutes. If more than five ounces leaks, use "USCG Type A1." If less than five ounces leaks, you may use "USCG Type B1."