Craftsman 917.270532 Lift Assembly Wire

I have a Craftsman 917.270532.



I need to replace the wire for the lift assembly. It is going to be part 1 (wire) and part 3 (pin) on the diagram below. Do I need to take off the arm to do that? How would I replace those two things?



http://ift.tt/1o5zSyf



Alex