Bought a 20383 TORO Super Recycler in the Fall of 2014. I often get resistance from the rear-drive wheels when I am pulling the machine backwards. Then, it sometimes feels slow to "drive forward" once the Personal Pace handle is re-engaged.
If you follow the drive cable up the left hand side of the handle, you will find a clamp holding the cable. Loosen the clamp and pull the cable up, toward the handle 1/8". Retighten and try the unit. Adjusting this cable, controls the amount of force needed to operate the drive.
If you follow the drive cable up the left hand side of the handle, you will find a clamp holding the cable. Loosen the clamp and pull the cable up, toward the handle 1/8". Retighten and try the unit. Adjusting this cable, controls the amount of force needed to operate the drive.