2003 Kawasaki JetSki 800 SX-R Factory service manual, Page 221Get this manual

2003 Kawasaki JetSki 800 SX-R Factory service manual, Page 221

14-2 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
Clean the cooling system (see Cooling System Flushing in the Periodic Maintenance chapter)