English | 19
Bosch Power Tools 1 609 929 M38 | (11.9.07)
f Take protective measures when dust can de-
velop during working that is harmful to one’s
health, combustible or explosive. Example:
Some dusts are regarded as carcinogenic.
Wear a dust mask and work with dust/chip ex-
traction when connectable.
f Keep your workplace clean. Blends of mate-
rials are particularly dangerous. Dust from
light alloys can burn or explode.
f Always wait until the machine has come to a
complete stop before placing it down. The
tool insert can jam and lead to loss of control
over the power tool.
f Never use the machine with a damaged ca-
ble. Do not touch the damaged cable and pull
the mains plug when the cable is damaged
while working. Damaged cables increase the
risk of an electric shock.
Functional Description
Read all safety warnings and all in-
structions. Failure to follow the
warnings and instructions may result
in electric shock, fire and/or serious
injury.
While reading the operating instructions, unfold
the graphics page for the machine and leave it
open.
Intended Use
The machine is intended for impact drilling in
brick, concrete and stone as well as for drilling in
wood, metal and plastic. Machines with electron-
ic control and right/left rotation are also suitable
for screwdriving and thread-cutting.
Product Features
The numbering of the product features refers to
the illustration of the machine on the graphics
page.
1 Keyless chuck
2 “Drilling/Impact Drilling” selector switch
3 Thumbwheel for electronic speed preselec-
tion (GSB 20-2 RCE/GSB 20-2 RET)
4 “Drilling/screwdriving” selector switch
(GSB 20-2 RET)
5 Rotational direction switch(GSB 20-2 RE/
GSB 20-2 RCE/GSB 20-2 RET)
6 Soft grip
7 On/Off switch
8 Thumbwheel for speed preselection
(GSB 20-2 RE)
9 Lock-on button for On/Off switch
10 Gear selector
11 Button for depth stop adjustment
12 Auxiliary handle*
13 Depth stop*
14 Chuck key
15 Key type drill chuck
16 Screwdriver bit*
17 Universal bit holder*
18 Allen Key**
*The accessories illustrated or described are not in-
cluded as standard delivery.
**Commercially available (not included in the delivery
scope)
OBJ_BUCH-115-002.book Page 19 Tuesday, September 11, 2007 2:39 PM
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