Small Engine Troubleshooting Problems? Ask a Mechanic Now.
Welcome to JUST ANSWER small engines, let me try to help you !! I don't know it all, but maybe together we can get you a satisfactory answer!
# 17 pinion gear is what has to slip for the mower to be pulled backwards. But see nothing that relates to the belt guard! Have you checked the pinions and cleaned the shaft and gears?