My L t155 was due for some new cutting blades which I purchased from the dealer. I installed the blades myself since there wasn't a lot of mechanical involved. I also installed
The belt that drives the cutting deck which also proved to be quite easy for me. Everything went very well and I buttoned everything up and hoped on the Deere ready to get mowing.
Only problem was the mower would not move,either forward or backwards when I depress the pedals. This is a hydrostatic transmission and it was running the very best when I drove the tractor into the garage an hour earlier to start my repairs.

I cannot figure this out. I did nothing that would have remotely been connected to the drive
Train of the tractor. I know it is driven by a drive belt but it looks like it is turning fine. HELP!

On the back of the mower you should see a rod. It's called a tow valve rod. Make sure it is pushed all the way in.