Since I work for the undefeated, undisputed, heavyweight champions of the universe in the realm of sliding spec, I figured, what's the fucking point of coding anything at all today, and spent the day in the garage. Let me clear; I love the smooth power, the delivery, the performance, and oddly satisfying handling of the Burgman 650. Tearing down a parts bike to a pile of parts is not really any different than any other bike. Lots of tedious unbolting and evaluating. This parts donor, when I tore it down, was largely a write off for all external parts. everything was trashed; the bike apparently tumbled. But the CVT was the real win, here.
The repair bike is largely torn down to the bare minimum needed for evaluation of the issue. The final drive is toast, and unlike EVERY other CVT machine in the universe, this one has a distinct, separate CVT "gearbox". With clever unbolting of certain frame stuff, flexing, sweating, pleading and whining, you can get the cover off the CVT to get to the cones. What you can't do.... however... is get the cones OUT.

Suzuki clearly thought they'd designed the CVT gearbox for long-duration use, what with having to remove the ENTIRE power train to crack the gearbox from the engine... and then used a rubber and fibre standard-ish v-belt. WTF, Suzuki???

Then they used an oil-soaked metal and fibre segment belt-chain-thing in the final drive.
WTF, Suzuki, redux.

Now that I'm re-engaged in this project and have moved on to the repair bike as the main focus, holy crap. If you have a Burgman 650, ride, love it, treat it well, and for the love of god, maintain it well and avoid hard launches. You don't want to deal with the mechanicals involved in the gearbox. Just trust me on this.