My 2012's tensioner's extension measures 16 mm after 12,000 miles. I'm going to replace it anyway, as I've already purchased a Versy and have opened-up the clutch cover-so might as well.
I'm curious as to the tensioner's extension measurement from the factory, to get an idea of the amount of wear ( i.e. mm/ 1,000 miles ) for my riding style and to gauge how often to open-up the clutch cover to check it. Someone suggested a very rough estimate to be 1mm/ 1,000 miles. Mine seems much lower than that, however I don't know what the extension measurement is at 0 miles.

Even if you put a new chain on, there's no Known number of mm of tensioner extension, because the guides are a variable that play into the equation.
I didn't change anything but the cam and chain and I remember being unhappy about how far it was extended, but can't remember what it measured.  O Can tell you that the chain I removed didn't measure as worn out when I did the measurement. I d say there was another five thousand miles in it, but I wanted to put a cam in and Verslagen hadn't invented the gizmo yet, so,I did it anyway.
I was justin_o_guy back then.
Can't say what mileage, don't remember hoot.
Except that I rode the snot outta the thing.
The ends of the pegs were ground down to almost falling off.

Obviously not retired porn stars.

Wow! That much. I might have given 5 or 6 but that's half the extension capabilities right there.

So, what we really need is the first hole, say, 10mm out from where it is and then the second hole in order to really get full use out of the chain?

You're gonna Apologize for a set up like that? That was beautiful.

Dave wrote on 01/09/16 at 07:31:20:

haha. Pensioners, tablets, extension measurements. Keep it up