Removed supercharger from motor.
Removed intake and outer tube
Salty water adhered inside of supercharger. This is main cause of seized blower of supercharger.
Coating of blower was damaged too.
Unfortunately the supercharger replacement parts are not available from Kawasaki.
So now this ski need a new S/C assy cost over $4000,,,,,here in AUS.
It is very expensive.
If you own U-250,U-260 better to wash and lube every after season for avoid this problem but not easy to remove S/C from motor, so better to take work shop and request service of this.