First, thanks for this forum. I am new here. I have an Echo CS-590 saw. The other day I tried to get it started. While I was yanking the cord with the brake on, per the instructions, something happened, and now the saw will not let me pull the cord unless the brake is off. I tried to get into the saw to figure out what was going on. I took the clip and washer off the clutch drum to remove it, but regardless of whether the brake is on or off, the drum will not budge. It's on there good and tight. On at least one other Echo model, the drum comes right off once the clip is removed, so this doesn't seem right. Wondering what could cause this problem. Does it mean the clutch springs are screwed up? Also, how can I get this drum off? There is no way to grip it.