Mowing the homestead this afternoon, and my deck died. It started Not cutting with the center blade. Put an old 50# weight on the 318's seat so I could run the deck and carefully look under to see what was/wasn't happening. The blade on the drive pully wasn't turning, but the drive pully was turning, but very wobbly.
Took the deck off the tractor, and found the drive pully was indeed not connected to the shaft, the shaft looks very worn, and the bearings are turning very rough.
Looks like at the very least, I need the sheave (pullys), shaft, bearings, shaft key, and probably new snap rings. At JDParts, that comes to almost $170. Plus, it shows that at the very least the dealer would have to order the sheave and the shaft.
Not really asking for help, just needed to vent a little. One good thing, I have a line on a used 46" deck off a 318, for $275. I've always thought the 50" deck was too wide a cut for at least some parts of my lawn.