I know your post is quite old, and I didn't see any responses to it. But I just got a new Street Twin myself, and was interested in your Service Wrench question. I Googled it and found a lot of comments on TriumphRat about using the DealerTool Diagnostic from the UK to clear the icon.
Guys seem to be happy with it, and you can reset the service wrench idiot light using it (plus do a lot of other ECU functions).
So did you blow off the 500-mile $300 oil change at the dealer? Do you know if that voids the warranty?
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