I got one that is stripped new price is half cost of trimmer. Any sources for these on line? I guess I will either try to get used or get pionion set and bevel gear. Haven't tried to get it apart but it looks difficult!! Part number for pinion set is 22024-13391 and bevel is 22024-13220. And yes it had grease in it.....now I see why I have been running Echo. It is easy to find used gear heads for Echo since a lot of guys run raw gas and dealer get about one a week in scrap bin. I can get used gear box for Echo for $50.