I purchased a lawn tractor in April 2010. From the start it mowed at 3" when set at 5".
I can't use any other height. I stored it inside over the winter. This year it also has a deck that shakes terribly...it may need a belt repair? THe "warranty' center told me I have to make the repairs and/or adjustments myself using my owners manual.
Even though this mower had only been used for barely 10 months. Sears has left me high and dry - I will never use Sears again if this is their new policy for supporting customers and their warranties!!!