1991+ Kawasaki 650 SC Factory Service Manual, Page 95Get this manual
COOLING AND BILGE SYSTEMS 8-5 and Bilge System Flushing
Cooling System Flushing
To prevent sand or salt deposits from accumulating in the cooling system, it must be flushed occasionaillyFlush the system according to the Periodic Maintenance Chart, after each use in salt water, or whenever there is reduced water flow from the bypass outlet on the left side of the hull Remove the fitting cap [AJ on the cylinder head
Connect garden hose [A] to the fitting
Start the engine and allow it to idle before turning on the water
CAUTION