1995-1997 Kawasaki 750ZXi-900ZXi Jet Ski Repair Manual., Page 114Get this manual
8-6 COOLING AND BILGE SYSTEM Cooling and Bilge System Flushing Cooling System Flushing
To prevent sand or salt deposits from accumulating in the cooling system, it must be flushed occasionally Flush 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 Remov the fitting cap [A] on the cylinder head
Connec garden hose [A] to the fitting
Starthe engine and allow it to idle before turning on the water
CAUTION
The engine must be running before the water is turned on or water may flow back through the exhaust pipe into the engine, resulting in the possibility of severe internal damage