Self propelled cable in larn boy model 10682 broke

SOURCE: i have a toro personal pace gts self propelled.

You can buy the whole part...cord,handle,recoil spring all in one piece and remove the old install the new...or you can just buy a legth of pull cord and swap everything over.
First take off the top 4 phillip screws and remove the plastic cover....don't forget to pull off the oil fill cap, next drill out the center of the three pop rivets that hold the recoil spring in place, use a drill bit a little smaller than the rivet, next tap the rivet out using a punch and a hammer, next install the pull chord by first rewindind the coil spring then locking it oin place so it wont twist back and install the new line(pull cord)...next install it on the top of the motor and install 3 new 1/4" aluminumn pop rivets 3/8" long with a pop rivet gun all can be purchased atb Ace Hardware...reinstall the reverse of dismantle proceedure and happy mowing...don't forget to attach the black plastic/rubber pull cord handle.
Happy Mowing!!

SOURCE: I have a Toro self

Toro 20016 self propelled walk behind when the wheels are engaged it moves, when the wheels are not engaged, the wheels look up.
What should I do to fix the problem