2004-2006 Kawasaki 900 STX Jet Ski Service Manual, Page 227Get this manual
15-2 STORAGE Preparation for Storage
During the winter, or whenever the watercraft will not be in use for long period of time, proper storage is essentialIt consists of checking and replacing missing or worn parts; lubricating parts to ensure that they do not become rusted; and, in general, preparing the watercraft so that when the time comes to use it again, it will be in top condition
Cooling System
the cooling system (see Cooling Clean Periodic Maintenance chapter)and Bilge Systems in the
Bilge System