Bad sector gear, bad steering gear, bad steering bearing, bad tie rods, low tire air pressure, bent spindle or axle. Jack up the front end and see if anything changes. Remember we are not standing next to you with a beer in hand seeing what you are talking about. Try to paint us a better picture, what do you see under the unit when turning the wheel, is there excess play in the steering wheel, do the axles, spindles and wheels look straight? Did this occur suddenly or slowly has gotten worse? We need your help now.
I got this same model of mower and earlier today the drive pulley that connects to the transmission just cracked an broke off in almost an exact circle underneath the nut that held it on. Was mowing on a flat surface, so I don't know what could have caused it to snap. Nothing in the transmission is locked up or anything. Everything still turns an works as it's suppose to. Just gonna have to get an install a new pulley (hopefully). Was curious about what might have caused it? Just a weak spot on the pulley that gradually got worse until it broke? Figured I'd hop on here an see if anyone else has had this same issue?
Please do not hyjack a thread with a totally different problem.
Vibrations caused the spot welds holding the 2 halves together to break apart.
Could be bad welds, too tight a belt, bent shaft or corrosion.
If it is under warranty, then take it back otherwise replace the pulley.
My apologies for hijacking the thread, I got on here on my phone an I don't use forums that much so wasn't sure how to start my own. But thanks for the info ordering a new pulley an hopefully it doesn't mess up again