Hello, New member that joined so I could ask the Honda Forum a question. I bought a used HRR2163TDA self propelled mower. The seller said the self propelled is not working and that it would probably need new drive gears on each side of the axle. After I took it home I did verify the drive gears were very worn so I purchased some replacements. (the old gears had 12 teeth so I ordered replacement drive gears with 12 teeth) I still had no forward motion from the mower. I then took the tires off the rear axle and with the help of my wife, I gripped the drive gears (with heavy gloves on) and the gears stopped spinning but the axle shaft continued to spin. That is when I noticed that the axle shaft was spinning in the wrong direction to give forward motion to the mower. I do not know the history of the mower. Could there be something that was done to the inside of the transmission to cause it to make the axle to spin in the reverse direction. This mower is suppose to have three forward speeds but as far as I know it should not have a reverse. I did not find a thread about the axle spinning in the wrong direction. Any thoughts? Thanks