I had exactly the same problem - its pretty easy if you ever have change a wire on a bike! =)
- Release the screw on the gear and remove the wire from the drive handle
- Remove the black cover on top of the mower
- Tip your mower to the side and follow the cable
- There is a security lock wich holds an aluminum bow in place, remove this.
- Release the old wire
This is it! =) To mount the new, just reverse the process! Good luck!
Kim-Andre, May 2011