The steering linkage on my John Deere RX75 Riding Mower needs to be tightened.
The steering wheel moves - but does not catch on the steering gears.
The tires do move (if I do it by hand) - occasionally the gears will catch a little and the tires do move.
http://www.flickr.com/photos/40794180@N03/3756285728/
http://www.flickr.com/photos/40794180@N03/3756286216/