you have to make up or have made up a three pronged tool to turn the central clutch hub. Remember its a left hand thread so turn clockwise to undo. failing the proper tool, strike the edge of the hub with a centerpunch but remember to turn CLOCKWISE !! The drum just slips off from the needle bearings .
dan
October 2008
I can answer this question...
How do I change the clutch drum on my Echo CS-440?