Speedometer calibration knob

[talltigeguy]

Hmmm, I've got 2 neighbor's with '02 21v Rider's Editions and neither one has that knob.

My 02 21V had that knob. It was a Rider's edition. I will dig up a photo shortly. The knob was in a different place.

It is the speedo adjust for sure.

Thanks to that knob, my wife was waterskiing at 40+ MPH and I kept pushing it harder. She took a hard spill and then I figured it out .

[dogbert]

Thanks to that knob, my wife was waterskiing at 40+ MPH and I kept pushing it harder. She took a hard spill and then I figured it out .

Yeah, probably not the best design decision they made...

[zad0030]

I have looked and I cant find one anywhere on my '03

[Jason B]

If I'm not mistaken I believe the knobs are only used on mechanical type speedos. If your speedo is digital I don't think it would have one.
I could be wrong, but that was the impression I got from my dealer during a PP install conversation.