Bosch GBH18V-21 Instrucciones De Funcionamiento Y Seguridad página 12

2610056642.qxp_GBH18V-21 2/24/20 1:08 PM Page 12
Drilling only:
used for drilling
wood, steel, etc.
to the far left. For reverse rotation move
the lever to the far right. To activate
trigger lock move lever to the center off
position.
until the tool comes to a complete
stop. Shifting during rotation of the
chuck can cause damage to the tool.
Mode Selector Dial
The selector dial allows the tool to be
set for various drilling/hammer drilling
applications. Depress release button
and turn selector dial right or left
depending on the below applications.
(Fig. 11).
the tool comes to a complete stop.
Shifting during rotation of the chuck can
cause damage to the tool.
When using demolition or chipping bits
such as bull points, chisels, spades,
gouges, etc. the "Hammer Only" mode
must be selected.
"Vario-Lock"
Choose a position which is best suited
for your operation. The Vario-Lock
position is intended for use with
chipping bits such as bull points,
spades, gouges, etc. Depress release
button and turn the selector dial, to the
"vario-lock" setting. Next, rotate the
locking sleeve, along with the accessory,
to the desired position. Then turn the
selector dial to the "hammer only"
setting and slightly turn the locking
sleeve to have it automatically lock into
a definite position (Fig. 12).
Operating Instructions
Drilling/hammering:
used for drilling
concrete
Fig. 11
Do not change
direction of rotation
Do not operate the
selection dial until
-12-
Vario-lock
allows chisel to be set
in one of 12 positions
2
SELECTOR DIAL
RELEASE
BUTTON
Slip Clutch
The tool has a internal pre-set slip
clutch. The output spindle will stop
rotating if the accessory binds and
overloads the tool.
DRILLING MASONRY
Use carbide-tipped masonry bit for
cinder block, mortar, common brick,
soft stone and other materials. The
amount of pressure to be used is
dependent upon the type of material
being drilled. Soft materials require less
pressure while the hard materials need
more pressure to prevent the drill bit
from spinning.
DRILLING WOOD OR PLASTIC
Drilling wood or plastic requires the
use of 3-jaw chuck (sold separately).
If backing block is not used, ease up on
the pressure just before the bit breaks
through the wood to avoid splintering.
Complete the hole from the opposite
side immediately after the point breaks
through. If bit binds, reverse the drilling
operation to help remove the bit from
the work.
Hammering only:
used for light
chipping work
Fig. 12
1