All this is, is a silly little way to launch a chicken using sandbox elements.
The Machine should appear in the right place, but if it doesn't make sure it is in the place as shown in the picture (near the archer statue).
Controls are simple: arrow keys to control the grabber arm, 1,2,3,4 and 5 to extend the grabber arm, v to drop the chicken, and "," to throw the block and activate the launch.
Just grab the chicken with the arm, drop him onto the grabber on the starting block, and launch the block. It might not work the first time, so just re-do it if it fails.