1992-1998 Kawasaki PWC Jet Ski Service Repair Manual., Page 18Get this manual
PRACTICES
can NOT exceed 42 months from the date of manufacture and at such time the device can no longer be counted toward the minimum requirementsThe only non-pyrotechnic visual distress evice approved by the coast guard for use at night is an electric distress lightnot flashlight but an approved electric distress light which MUST automatically flash the international SOS distress signal-)four to six times each minute
sooner or later craft with no visible registration numbers will attract the attention of the law-