If you search for the owners manual for that model number, you should find an 'exploded' view of the parts, with different sections on different pages. You may be able to determine position based on those images.
The picture you posted gives little 'context' to even determine what the part is, where it is located, etc. My short take is it is attached to the transaxle, but exactly where on the trans I cannot tell.
If the control levers are attached and functional, the next thing to consider would be a mounting bracket or support. It does not appear to be connected to anything.
tom