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16 | English 2 609 140 459 18.1.07
Left rotation: Press the rotational direction switch 5
through to the left stop (for loosening and unscrewing
screws and nuts).
Switching On and Off
To start the machine, press the On/Off switch 4 and
keep it depressed.
To lock the pressed On/Off switch 4, press the lock-
on button 3.
To switch off the machine, release the On/Off switch
4 or when it is locked with the lock-on button 3, briefly
press the On/Off switch 4 and then release it.
Adjusting the Speed (GBM 450 RE)
The speed of the switched on power tool can be varia-
bly adjusted, depending on how far the On/Off switch
4 is pressed.
Light pressure on the On/Off switch 4 results in a low
rotational speed. Further pressure on the switch results
in an increase in speed.
Operating Instructions
f Apply the power tool to the screw/nut only
when it is switched off. Rotating tool inserts can
slip off.
For drilling in metal, use only perfectly sharpened HSS
drill bits (HSS=high-speed steel). The appropriate
quality is guaranteed by the Bosch accessories pro-
gram.
Twist drills from 2.510 mm can easily be sharpened
with the drill bit sharpener (see accessories).
We recommend the use of a drill stand (see accesso-
ries) for work where greater precision is particularly
required.
The machine vice, which is available as an accessory,
enables secure clamping of workpieces. This prevents
the workpiece from turning and any accidents this
would cause.
Belt Clip
With the belt clip 2, the machine can be hung onto a
belt. The user has both hands free and the machine is
always at hand.
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 machine should fail despite the care taken in man-
ufacturing 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.
WARNING! Important instructions for connecting
a new 3-pin plug to the 2-wire cable.
The wires in the cable are coloured according to the fol-
lowing code:
Do not connect the blue or brown wire to the earth ter-
minal 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.
Service and Customer Assistance
Exploded views and information on spare parts can be
found under:
www.bosch-pt.com
Great Britain
Robert Bosch Ltd. (B.S.C.)
P.O. Box 98
Broadwater Park
North Orbital Road
Denham-Uxbridge
Middlesex UB 9 5HJ
Service:. . . . . . . . . . . . . . . +44 (0) 18 95 / 83 87 82
Advice line:. . . . . . . . . . . . +44 (0)18 95 / 83 87 91
Fax: . . . . . . . . . . . . . . . . . . . . +44 (0) 18 95 / 83 87 89
Ireland
Origo Ltd.
Unit 23 Magna Drive
Magna Business Park
City West
Dublin 24
Service:. . . . . . . . . . . . . . . . .+353 (0)1 / 4 66 67 00
Fax: . . . . . . . . . . . . . . . . . . . . . .+353 (0)1 / 4 66 68 88
OBJ_BUCH-312-001.book Page 16 Thursday, January 18, 2007 3:16 PM
16


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