Donovan, I will try to use my knowledge from working with our auger cart on the farm. If the front wheels on his tractor were "driven," like a front wheel assist tractor, the tread would be facing forward (to "dig in"). You see this on any front wheel drive/assist machine.
Our auger cart has the tread facing backwards, resembling what is on the front of his lawn tractor. The reason is because the auger cart wheels are being "pulled." With the tread facing that way, instead of "diggin in," they will "ride on top/rize to the top" of the ground. In the relm of the lawn tractor, the front wheels are being "pushed" and don't need to "dig in." Facing them in that direction will keep them on top of the ground, which will allow them to operate properly as steerable wheels.
I hope this helps as its the only way I can describe it.
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