2005 Yamaha 150 four stroke trim anode

Does any one know how to replace the trim anode on the F -150 Yamaha outboard. Do I have to pull the lower unit, or is there a trick.

On my F75 there is a rubber stopper above the anode on the upper half of the unit. If you pop the rubber stopper off you should see the top of the bolt. Mine takes a 12mm. Just turn it counter-clockwise and it should come right off. I don't know if they are the same, but I wouldn't think they would be all that different.

trim anode replacement

Thanks very much.