You can see the adjuster there above the Yoshi. It is screwed to the foot peg mount. It's accessible even though this photo makes it look tight. It's crazy but people just can't resist playing with it. "What's this?" and then they turn it! When you get it set where you like it back it all the way down and count the rotations so you can easily check it periodically.
OOPS: Didn't see KML's post, same mounting as he did.
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