18 | English
1 609 92A 1ES • 23.9.15
Reversing the rotational direction
Actuate the rotational direction switch 8 only
when the machine is at a standstill.
The rotational direction switch 8 is used to reverse
the rotational direction of the machine.
Right rotation: Turn the rotational direction switch
8 to the stop in the position .
Left rotation: Turn the rotational direction switch 8
to the stop in the position .
Set the direction of rotation for hammer drilling,
drilling and chiselling always to right rotation.
Switching On and Off
To save energy, only switch the power tool on
when using it.
–To start the machine, press the On/Off switch 7
and keep it pressed.
–To switch off the machine, release the On/Off
switch 7.
For low temperatures, the power tool reaches the
full hammer/impact capacity only after a certain
time.
Setting the Speed/Impact Rate
The speed/impact rate of the switched on power
tool can be variably adjusted, depending on how
far the On/Off switch 7 is pressed.
Light pressure on the On/Off switch 7 results in low
speed/impact rate. Further pressure on the switch
increases the speed/impact rate.
Overload Clutch
If the tool insert becomes caught or jammed,
the drive to the drill spindle is interrupted. Be-
cause of the forces that occur, always hold the
power tool firmly with both hands and provide
for a secure stance.
If the power tool jams, switch the machine off
and loosen the tool insert. When switching the
machine on with the drilling tool jammed, high
reaction torques can occur.
Changing the position of the chisel
The chisel can be locked in 13 positions. In this
manner, the optimum working position can be set
for each application.
– Insert the chisel into the tool holder.
– Turn the mode selector switch 5 into the position
“changing the position of the chisel” (see “Set-
ting the operating mode”, page 17).
– Turn the tool holder to the desired chiselling po-
sition.
– Turn the mode selector switch 5 to the “chisel-
ling” position. The tool holder is now locked.
– For chiselling, set the rotation direction to right
rotation.
Working Advice
Before any work on the machine itself, pull the
mains plug.
Apply the power tool to the screw/nut only
when it is switched off. Rotating tool inserts can
slip off.
Vibration Damper
The integrated vibration damper reduces occurring
vibrations.
Maintenance and Service
Maintenance and Cleaning
Before any work on the machine itself, pull the
mains plug.
For safe and proper working, always keep the
machine and ventilation slots clean.
A damaged dust protection cap should be
changed immediately. We recommend having
this carried out by an after-sales service.
If the replacement of the supply cord is necessary,
this has to be done by Berner or an authorized
Berner service agent in order to avoid a safety haz-
ard.
In all correspondence and spare parts orders,
please always include the 6-digit order number giv-
en on the nameplate of the machine.
Disposal
The machine, accessories and packaging should
be sorted for environmental-friendly recycling.
Do not dispose of power tools into household
waste!
Only for EC countries:
According to the European Directive
2012/19/EU for Waste Electrical and
Electronic Equipment and its imple-
mentation into national right, power
tools that are no longer usable must
be collected separately and disposed
of in an environmentally correct manner.
Subject to change without notice.
Position for changing the
position of the chisel
Position for chiselling
OBJ_BUCH-735-005.book Page 18 Wednesday, September 23, 2015 10:20 AM
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