How do I assemble the Craftsman lawn mower when I first unbox it?

First, cut down two end corners of the carton and remove all packing materials except padding between handles. Roll the mower out and check for loose parts. Then attach the upper handle to the lower handle using provided hardware, ensuring all bolts are tightened securely. If applicable, attach the grass catcher to the rear discharge opening and ensure it is securely fastened.