There are quite alot of checklists for a used tzm bike.
Most commonly problems are like thick carbon accumulated in the chamber, knocking simulation from the block, YPVS (when u start the bike, the wires or even itself), steering bearings, suspension, brakes, tyres, tank (internal rust condition), meter gauges (RPM, Speedo and temp/fuel) and so on...
it was since long ago posting in tzm thread.