According to the Yamaha microfiche, the part number for the "Main Switch Steering Lock" is 2GK-82501-01-00. I found this on the boats.net OEM parts finder; clicking the link on the part number tells me that the same unit is used on the XT350 from 1987 to 2000; that appears to be the only other model using that part. Since it is the steering lock as well as being the ignition, that's not surprising to me.
And that road goes on and on into the sunset
And my destiny is bound to move me on
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