But it's harder when you're stupid. I was a heavy equipment mechanic for over 20 years and also have a Troy Bilt Horse that my Dad bought in the late 70's. I rebuilt the Kohler engine and was doing a bunch of other repairs that it needed due to its age and use. In the process of trying to remove the wheels to sandblast and paint them the right one would not come off. Not thinking, I tried several ways to force the wheel off including applying a lot of prying force between the wheel hub and the gearbox housing and using a hammer and punch to try to drive the shaft out of the hub. Of course this sheared the snapring off the opposite side and apparently got the clutch jammed onto the shaft inside the gearbox and then in trying to get the clutch loose I broke it. Now I have to take the gearbox apart to replace the clutch and I cannot find any information on the correct way to do this without causing any more damage. Could anyone direct me to where I can find this information?