Prebena 9A-MGS-55 Instrucciones De Servicio página 76

Operating electrical tools
To select the direction of rotation, proceed as follows:
Right-hand rotation
To fasten screws.
Push rotation direction reversal switch (11) to the left up to the
limit
The selected rotation direction is "clockwise".
Left-hand rotation
To undo screws.
Activate the safety lock.
Release thumbscrew (11) by turning it in an anti-clockwise
direction.
Pull feeding device (2) forwards to remove it from drive unit (1).
Push rotation direction reversal switch (11) to the right up to the
limit
The selected rotation direction is "anti-clockwise".
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CAUTION
Changing the direction of rotation when
switching the ON/OFF switch can damage the
electrical tool.
Change the direction of rotation only when
the unit has come to a complete standstill.
CAUTION
Using the tool with left-hand rotation when the
feeding device is attached can damage the
auto feed screwdriver.
Follow the steps shown above to unscrew
screws that were inserted incorrectly.