Has anyone had trouble with the Deere 737 with 23 Hp Kawi leaking oil. Mine started leaking around one of the crankcase seals so I took it in for repair and they fixed it. However, the first day out with it after the repair, the engine locked up . They told me the shaft on the oil pump had sheered of and the gear went into the crank. Lucky for me this was still under warranty, actually only have 155 hours on the machine.