1992-1998 Kawasaki PWC Jet Ski Service Repair Manual., Page 30Get this manual
4-1 INTRODUCTION The watercraft being prepared for service probably represents sizeable investment In order to this investment and for the owner to receive the maximum amount of enjoyment from the it must be cared for properly while being used and when is of the waterAlways store the watercraft with the bow higher than the stern and be sure to remove the inner hull drain plugsIf you use any type of cover to craft, plastic, canvas, whatever, be to allow for some movement of through the hullProper ventilation will assure evaporation of any condensation form due to changes in temperature