When the release lever is set to the friction feed position, the release lever disengages the change gear
from the tractor gear. At the same time, the release lever applies pressure to push the pressure rollers
against the platen, allowing paper to be fed.
Tractor Feed
When the release lever is set to the tractor feed position, the release lever allows the reset spring to push
the change gear toward the tractor gear. At the same time, the release lever pushes the pressure rollers
away from the platen, which allows paper to be fed by the push tractor.