Ok Guys. I have a 1948 John Deere B and it was running and I pulled it on my trailer to haul it. It run like it always does, not a problem. I chained it down and transported it. When I got home I unchained it and went to start it. The starter engaged and that was it. The starter is free and away from the flywheeland I can't even turn the flywheel. I tried different options like pulling the spark plugs and no gas in the cylinder walls. I did pull the top plate off to look into the engine and I tried to move the pistion crank, on the flywheel side I can move it but on the clutch side I can't move it. Did that pistion cease up? Like I said it was running fine before this. I'm hoping that I don't have to tear down the engine. Any ideas or suggesting would be a great help. This is the first 1948 I've owned. Thanks for any suggections or ideas.