Getting to the pull cord of the garden tiller is a fairly easy process. Remove the covering off the top of the spark plug. Doing this will prevent the garden tiller from inadvertently starting. Once this rubber is removed you can take out the spark plug wire. The starter is covered by a plastic shroud and fastened in place with a series of bolts. Use either the wrench set or the socket set to remove these bolts and then lift off the shroud and place it on your work surface upside down. Fastened to the underside of this shroud is a pulley where the old pull cord is located.