remove 4 - 5/16 screws to seperate the engine assy. from the shaft.Pull flex cable out of the end of the clutch hub.Inside where the flex cable went there is an allen head screw down in the clutch hub shaft.Remove it and the hub will come off the clutch.On the ST285 there are 3 sets of clutches and each one unscrews (they are threaded on the crank-shaft.
Hope this helps
Harold
May 2010
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