I got a 1978 317 automatic from my aunt it has a 18 hp kolher magnum opposed twin. My uncle told me could be valves or head gasket. He said he went out and It fired right up and mowed two times and now it won't start. I need to know what the torque sequence is and what you set your torque wrench to. Here is a picture
Could be blown engine. The Deere 317 almost put Deere out of the garden tractor market because of its bad reputation for throwing rods. The kohler engine that was used in it has a 5 psi pressure lubricated oil system that didn't even supply pressurized oil to the crank journals, they got their oil dripped down from the crank shaft. Check compression first.
