33 C.F.R. § 183.524 Fuel pumps.
Title 33 - Navigation and Navigable Waters
(a) Each diaphragm pump must not leak fuel from the pump if the primary diaphragm fails. (b) Each electrically operated fuel pump must not operate except when the engine is operating or when the engine is started. (c) If tested under §183.590, each fuel pump, as installed in the boat, must not leak more than five ounces of fuel in 2 [CGD 74–209, 42 FR 5950, Jan. 31, 1977, as amended by CGD 77–98, 42 FR 36253, July 14, 1977]
Title 33: Navigation and Navigable Waters
PART 183—BOATS AND ASSOCIATED EQUIPMENT
Subpart J—Fuel Systems
Equipment Standards
§ 183.524 Fuel pumps.

