2003-2005 Kawasaki Ultra-150 Jet Ski Factory Service Manual., Page 262Get this manual
15-2 STORAGE Preparation for Storage
During the winter, or whenever the watercraft will not be in use for ong period 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 yste m
an sC Clehe PheeriodiocliMgaisnytstneam c(eecehapotolri)n.g System Flushing in en e
B ilg System