The starter on my 630 would not engage in the recent cold spell we had (live in Minnesota). I removed the battery and tested it was fine so I left it alone due to the cold weather until yesterday when it warmed to the mid 30's. I placed some heat on the tractor to warm it faster, removed the starter cover plate cleaned connection on the starter and battery cables. The starter/selinod clickes when you hit the switch but does not engauge the flywheel. If I hit the starter while the battery charge is hooked to the battery the needle on the charger jumps to showing a completely dead battery and then slowly begins to show charging. No previous problems with starter.
Greg
Greg