Just for an FYI, I seen in the June 2004 issue of ATV Action that Cycle Country is offering a new transformer clutch kit that adds a hydraulic manual clutch to the Z250 or Ozark. The transformer works with the stock centrifugal clutch, so you only use the manual clutch when you choose to. The transformer kit bolts on in minutes, according to Cycle Country, and runs $260, including shipping.
My boyfriend brought up the fact that this might be a good idea for someone learning to use a clutch, since you can choose to use it when you want.