I am new to the forum and new to John Deere's. I Took out my battery and fully charged it, but when I put it back in backwards. It was only for a second, but there was some heavy smoke on the right side of the tractor as you look at it. I have a 2001 John Deere 4440. I pulled battery back out, and will see if there is anything messed up with that. What are the next steps. Tell me there is a main fuse...... What else would you move to? Starter Solenoid? Did I mess up the alternator or does this have a computer? Thanks for the help.