Oki ML490 Maintenance Manual page 44

(4) Push and pull tractor mechanism (Option) (See Figure 2-10).
This mechanism consist of an optional pull tractor and a standard push tractor mechanism.
This mechanism can perform forward and reverse feed by setting continuous sheets to
the push tractor and pull tractor.
The rotation of the platen is transmitted to the push tractor and the pull tractor. Sheets
are fed by these two tractors at the same time.
To remove slack from the sheets, set the sheets according to the following procedure when
using the push and pull tractors.
1
Set the change lever to the REAR position (setting the sheets to the push tractor
to feed).
2 Set the paper, which is fed in front of the platen, to the pull tractor.
3 Set the change lever to the TOP position and feed paper using the platen knob.
4 If paper slack is removed, set the change lever to the REAR position.
Idle gear
Platen gear
42114101 Rev.1
Drive gear
Platen
Figure 2-10
Pull tractor
Pull tractor
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