Bosch Professional GBH 2-24 DFR Manual Original página 23

Operating Instructions
Changing the Chiselling Position (Vario-Lock)
The chisel can be locked in 36 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 10 to the "Vario-
Lock" position (see "Setting the Operating
Mode", page 22).
Turn the tool holder to the desired chiselling po-
sition.
Turn the mode selector switch 10 to the "chisel-
ling" position. The tool holder is now locked.
For chiselling, set the rotation direction to right
rotation.
Inserting Screwdriver Bits (see figure K)
Apply the power tool to the screw/nut only
when it is switched off. Rotating tool inserts
can slip off.
To work with screwdriver bits, a universal bit
holder 24 with SDS-plus shank (accessory) is re-
quired.
Clean the shank end of the adapter shank and
apply a light coat of grease.
Insert the universal bit holder with a turning mo-
tion into the tool holder until it automatically
locks.
Check the locking effect by pulling the universal
bit holder.
Insert a screwdriver bit into the universal bit
holder. Use only screwdriver bits that match the
screw head.
To remove the universal bit holder, pull the lock-
ing sleeve 5 toward the rear and remove the uni-
versal bit holder 24 out of the tool holder.
Bosch Power Tools
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 hav-
ing this carried out by an after-sales service.
Clean the tool holder 3 each time after using.
WARNING! Important instructions for con-
necting a new 3-pin plug to the 2-wire cable.
The wires in the cable are coloured according to
the following code:
Do not connect the blue or brown wire to the
earth terminal of the plug.
Important: If for any reason the moulded plug is
removed from the cable of this power tool, it
must be disposed of safely.
If the machine should fail despite the care taken
in manufacturing and testing procedures, repair
should be carried out by an after-sales service
centre for Bosch power tools.
In all correspondence and spare parts order,
please always include the 10-digit article
number given on the type plate of the machine.
English | 23
1 619 929 739 | (2.8.07)