Nov 14, 2012· Kuhn Rotary Rake Problem posted in Machinery: I have an older Kuhn GA300 3pt rotary rake. Mid summer it broke down on me. The rake will not turn with the PTO. When I lift it off the ground, the rake arm assembly seem to 'flop' around horizontally like something is broken inside just causing it to dangle. I don't believe it is a roller pin because of this.