Well, I hope you have alot of patience! First I would go to sears.com, enter you tractor number. This will eventually lead you to a parts breakdown for your model. Now study the parts break down and go inspect the tractor steering parts, naturally you will want to look for play or slop in parts. Most designs have the stamped steel front axles, if yours cast iron then it would be different on my following instructions.

usually you will need the nylon snap in probably the sector gear, steering shaft, usually the pittman shaft. but First look at the front axle while somebody is moving the steering wheel. If it rocks back and forward the center mount bolt may just be loose. If not you may have to change the bearing spacer (bushing) on the front axle. You also may have spindle wear,tie rod, and drag link wear.

basiclly you will have to figure out which parts are worn and just not loose where tighting will remove some of the slop. The hardest part would be the sector gear and steering shaft, the steering shaft cause on most models the shaft just don't come out without tearing the dash apart. also has a nylon steering shaft bushing thats probably worn also. Good luck this will test you patience and mechanical ability to the max. "O" if I had a camera I would also take pictures, incase you need something to look at when you assemble it.

If you do get into sector repair on this, the best way to remedy is to replace the sector as an assembly. Check the part # online as an AYP # and it maybe be less $ than Sears.