It appears the front wheels are both turned outward. This makes turning a bit difficult. Nothing appears bent out of shape. How can I adjust and make these wheels perpendicular? Thank you! :)

Front wheels and tires are not set perfectly straight. It is hard to explain without pics but the caster, toeand camber of front wheels has them tilt slightly out at the top and slightly pointing at a point about 10' in front of the tractor. Here is some info on how they set car toe, cater and camber. Unless you damaged the tractor I would not bother adjusting. Caster, Camber, Toe (http://www.ozebiz.com.au/racetech/theory/align.html)