2003 Polaris Freedom, Virage and Genesis PWC Service Manual, Page 52Get this manual
Maintenance Cooling System Cooling System Flushing and Salt Water Maintenance
Flushing the cooling system with fresh water is necessary to neutralize the corroding effects of salt water or water with impurities like silt, sand, alkali, and other particles as well as to flush out other residue left in the passages of the watercraft cooling systemFlush water passages when the watercraft is not going to be ridden again that day or if the watercraft is expected to be stored for an extended timeCAUTION: Always follow the recommended flushing procedure below when flushing the watercraft cooling system to avoid engine damageNever flush hot engineSevere engine damage could resultDo not flush engine with engine turned offWater will fill engine and severe engine damage may resultWARNING
Do not touch any electrical part or driveshaft component when the engine is runningSevere personal injury or death could result
Flushing Procedure