8
| English
1 619 P08 930 | (10.5.10)
Bosch Power Tools
– Provide for good ventilation of the work-
ing place.
– It is recommended to wear a P2 filter-
class respirator.
Observe the relevant regulations in your
country for the materials to be worked.
Operation
Starting Operation
f
Observe correct mains voltage! The voltage
of the power source must agree with the
voltage specified on the nameplate of the
machine. Power tools marked with 230 V
can also be operated with 220 V.
Reversing the Rotational Direction
(GBM 350 RE)
f
Actuate the rotational direction switch 4
only when the machine is at a standstill.
The rotational direction switch
4
is used to re-
verse the rotational direction of the machine.
However, this is not possible with the On/Off
switch
3
actuated.
Right Rotation:
For drilling and driving in
screws, push the rotational direction switch
4
left to the stop.
Left Rotation:
For loosening and unscrewing
screws and nuts, press the rotational direction
switch
4
through to the right stop.
Switching On and Off
To
start
the machine, press the On/Off switch
3
and keep it pressed.
To lock the
pressed
On/Off switch
3
, press the
lock-on button
2
.
To switch off the machine,
release
the On/Off
switch
3
.
Adjusting the Speed (GBM 350 RE)
The speed of the switched on power tool can be
variably adjusted, depending on how far the
On/Off switch
3
is pressed.
Light pressure on the On/Off switch
3
results in
a low rotational speed. Further pressure on the
switch results in an increase in speed.
Working Advice
f
Apply the power tool to the screw/nut only
when it is switched off.
Rotating tool inserts
can slip off.
Tips
After longer periods of working at low speed, al-
low the machine to cool down by running it for
approx. 3 minutes at maximum speed with no
load.
For drilling in metal, use only perfectly sharp-
ened HSS drill bits (HSS=high-speed steel). The
appropriate quality is guaranteed by the Bosch
accessories program.
Before screwing larger, longer screws into hard
materials, it is advisable to predrill a pilot hole
with the core diameter of the thread to approx.
2
/
3
of the screw length.
Maintenance and Service
Maintenance and Cleaning
f
Before any work on the machine itself, pull
the mains plug.
f
For safe and proper working, always keep
the machine and ventilation slots clean.
If the replacement of the supply cord is neces-
sary, this has to be done by Bosch or an author-
ized Bosch service agent in order to avoid a safe-
ty hazard.
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.
OBJ_BUCH-527-004.book Page 8 Monday, May 10, 2010 1:11 PM