How do you remove front wheel form 2008 troy built pony gas mower?

SOURCE: front wheels not aligned

it sounds like your drag link is bent.look under the front.the rod connecting the two tires should be straight.if not,straighten it and slide a slightly larger piece of galvanized pipe over the rod to stop it from bending again

SOURCE: troy bilt pony left side tine assembly fell off

sounds like the shaft is either bent,or the inside diameter is worn and the shaft tube needs to be replaced.

SOURCE: changing the drive belt

remove plastic belt cover
remove the guard,belt/pulley
work in the right side first:
remove the rigth-side wheel
remove the screws of the bumper
remove 2 screws on bracket/transmission assembly
pull the bracket
install the new belt
reinstall the right side screws and wheel

do the same in the left side
Ps: remove the belt guide, and reverse return spring

http://www.partstree.com/parts/?lc=troy_bilt&mn=21A-634K766+7HP+FRT+Roto-Tiller+(2005)&dn=0079200009

SOURCE: How do I remove the wheels on a 1985 Troy Built Horse Rototiller?

Horse wheels are held on with a single roll pin. Pound out the roll pin and pray.....that the rims aren't rusted to the shaft. If the rims are rusted to the shaft, you have two choices. You can either put the new tires or tubes on the rim with the rim on the shaft...or you can work at getting the rims off the shaft. If you put tubes in, be sure the rim is free of sharp edges.....or you'll be sorry.

To get the rims off if they're rusted on, I've used a variety of techniques over the years. The most effective is to weld a nut on the spot where you removed the end caps. Use a nut that's the same thread as your bearing puller. Then use the bolt from your bearing puller to put pressure on the end of the shaft, pulling the rim off. A torch helps, but be careful or you'll be putting new seals in too.

SOURCE: my troy built pony drive belt broke. what do i

Take to auto parts store.