Please help me judge

[toybox]

This is the water pump impeller.

The shaft core is rusty, and the contact location is the mechanical shaft seal.
Should I replace it? Or can it still be used after polishing and plating?

 

[Motogiro]

Just replace it. Unless you have a way to clean and re-plate that area to it's original dimension.

2006 Yamaha FZ-6 (FZS6V) Water Pump | Ron Ayers

Shop online for OEM Water Pump parts that fit your 2006 Yamaha FZ-6 (FZS6V), search all our OEM Parts or call at 252-758-3084

www.ronayers.com

The link is for a 2006 series1 and I didn't check to see if a 2007 S2 are the same.