The front 'fork' supporting the front of the mower deck needs adjusting on the mower deck. When you remove the mower deck from the 'tactor' you will see adjustments. My LT150 has been so perfect, I'm glad I spent $2800.00 for the LT150. I've had no problems with mine in six years. Other cheap stuff I bought at the major hardware stores were junk. I had to work on them every time before I could use it. But not my pride and joy John Deere LT150. Read or get an owners manual or take to a John Deere Dealer for adjustment. You'll never have another problem. Remember too, there are grease fittings which need lube once a year, except, J.D. asks that you lube the front axle before each use. I have maintained my LT150 to absolute perfection and have had no trouble with it at all.
Richard H. Wilde, June 2009