I was baling one day years go, and the shear pin broke on the baler, I came to the house as I was out of bolts in the tool box of the tractor, I fixed the bolt and took a short brake, came back and the tractor would not start, I checked the fuel, charged the battery, even called John Deer, the service man was out my way but could not make there for a few hours, I said I have tried everything I could think of at that point it would turn over but not start, may be hit now and then and not start, about an hour had passed charge up the battery again good and crawled up in the tractor and thought I would try one more time before the mechanic got there, out of the corner of my eye when cranking the engine I saw the baler turning, pulled the PTO out of gear and amazing on how that help that tractor start,
got off called John Deere and canceled the service call, I felt dumb enough but would I have ever felt dumb if he showed up and pulled it out of gear,
Remember put tractor PTO in off before trying to start,