Bombardier SeaDoo 1998 factory shop manual, Page 31Get this manual
Subsection 03
Section 02 MAINTENANCE (FLUSHING AND LUBRICATION)
FLUSHING AND LUBRICATION
GENERAL
Flushing the cooling system with fresh water is essential to neutralize corroding effects of salt or other chemical products present in waterIt will help to clean up sand, salt, shells or other particles in water jackets (engine, exhaust manifold, tuned pipe) andor hosesFlushing and engine lubrication should be performed when the watercraft is not expected to be used further the same day or when the watercraft is stored for any extended timeInstall hose pincher on water outlet hose-
CAUTION
This prevents water from exiting through outlet socketRemove hose pincher after flushing operation
CAUTION
Failure to flush cooling system, when necessary, will severely damage engine andor exhaust systemNever flush hot engineMake sure engine operates during entire procedure