2004 F225 Internal Anodes?

[pbois]

Can anyone tell me where the internal anodes are located on my 2004 F225?

[boats.net]

They are in the heads, number 15 in this diagram Yamaha Outboard Parts 2004 F225TXRC CYLINDER CRANKCASE 2 Diagram

[HMBJack]

Right in between the spark plugs. You'll need a 10mm socket I think.