1995-2004 Kawasaki JetSki 750ZXi 900ZXi Factory Service Manual, Page 120Get this manual
8-6 CQ,OLI:NG, AND BILGE SYSTEM
Coolinq System Flush';n'g
To prevent sand or salt deposits from accumutetlnq in the coolinq svstern, it must be flushed occasionallyFlush the system according to the Periodic Maintenance Chart, after each use in salt water, or whenever there is reduced water now from the bypass outlet on the left side of the hull eR,emove the fitting cap [A] on the cylinder head
Connect garden hose [A] to the fitting
,.Start the engine and allow it to idle before turninq on the water
CAUTION
The en,gine musl be running before the, wa'ier islurned ,on or water im,ayfilow back Ihrough 'lheexhausl p'i:pe into 'Ihe engi'n,e, Ir'esulUng in the possiblUtyof severe internal dam,agemrnediatelv turn on the water an adjust the flow so that little trickle, of water comes out of the bypass outlet [A] on the left slide ofthe hull