That's the lift bracket for the motor, should be bolted to the head over the shroud.
I also found this lying on top of the mower deck, what is it and where did it go? I found it before I started to disassemble the tractor. It's about 3" long, 2" wide, and has a 1" 90` bend on one end.
Edited by Chuck_050382, June 26, 2012 - 01:08 PM.