2008 Yamaha WaveRunner FX SHO / FX Cruiser SHO Service Manual, Page 107Get this manual
General
CAUTION:
Be sure to supply sufficient water and water pressure to the cooling water passages when lubricating the engine internal components on land, otherwise the engine could overheatNOTE: While spraying the rust inhibitor into the breather hose, the engine speed will drop4Connect the breather hose5Install the engine cover