The drive disk on a snapper has two set screws loosen set screws set shift in roll position move disk up or down on the shaft where it just clears the drive wheel and drive wheel will turn freely. Tighten set screws Move shifter to position 1 drive wheel should make contact with the disk and should in all positions except neutral or roll position. Once proper adjustment is made your snapper should move out and cut the grass. I hope this has helped you.
jerry, August 2007
