Take the cover off the top with two screws, then remove bottom with several screws, then remove the side cover. This allows you to loosen the screws (right side and top of plate) to take off the front cover of the machine surrounding the reverse lever. On my machine, the reverse lever felt broken, like it was not attached to anything. After searching, I noticed a small screw visible just to the left of the reverse lever, and that it was loose. I lifted up and held the lever, then tightened the loose screw, and it works great now... no broken parts just a loose screw allowing the lever to not engage the reversing mechanism.
Debra, February 2017