Turn on your John Deere snow blower then move the shift lever on the right side of the handle to the top speed.
Move the drive control above the lever to pull forward then release the control.
Move the shift lever to the first reverse position then move the shift lever to the second reverse position.
Shift the drive control then release it. Continue to move into the top speed then back into reverse to adjust the reverse traction.
Run the snow blower until it is out of gas if the reverse gears are still not working properly. This will prevent gasoline spills.
Turn the blower over onto its side remove the screws from the lower frame cover with a Phillips head screwdriver.
Pour a light coat of 3-in-1 engine oil onto the gear shaft, which is the long pole in the middle of the assembly.
Replace the lower frame cover then reinsert and tighten the screws in the cover.
Move the blower back up onto its wheels and add gas. Run the blower and use the reverse shift to see if the gears are no longer stuck.