Well I picked up my ZX50 the other day. It is a 2000 model with just under 2,000 miles on the odometer, and has not seen much action at all for the past few years.
The engine seems to run well, but the belt snapped within the first 10 miles of riding it. I took apart the transmission to find that the rollers had a bunch of flat spots, so I replaced that along with the variator (OEM).
What else should I check/replace?