English | 11
Bosch Power Tools 1 609 929 M42 | (26.9.07)
Turn the bottom part of the auxiliary handle 7 in
counterclockwise direction and swivel the auxil-
iary handle 7 to the desired position. Then re-
tighten the bottom part of the auxiliary handle 7
by turning in clockwise direction.
The clamping band 14 of the auxiliary handle
must be seated in the corresponding groove.
Changing the Tool (see figure C)
f Before any work on the power tool (e. g.,
maintenance, tool change, etc.) as well as
during transport and storage, set the rota-
tional direction switch to the center posi-
tion. Unintentional actuation of the On/Off
switch can lead to injuries.
The drill spindle is locked when the On/Off
switch 6 is not pressed. This makes quick, conve-
nient and easy changing of the tool in the drill
chuck possible.
Open the keyless chuck 1 by turning in rotation
direction n until the tool can be inserted. Insert
the tool.
Firmly tighten the collar of the keyless chuck 1 by
hand in rotation direction o until the locking ac-
tion (“click”) is no longer heard. This automati-
cally locks the chuck.
The locking is released again to remove the tool
when the collar is turned in the opposite direc-
tion.
Replacing the Drill Chuck
f Before any work on the power tool (e. g.,
maintenance, tool change, etc.) as well as
during transport and storage, set the rota-
tional direction switch to the center posi-
tion. Unintentional actuation of the On/Off
switch can lead to injuries.
Removing the Securing Screw (see figure D)
The keyless chuck 1 is secured with a securing
screw 16 against unintentional loosening from
the drill spindle. Completely open the keyless
chuck 1 and unscrew the securing screw 16 in ro-
tation direction n. Please note that the securing
screw has a left-hand thread.
Removing the Drill Chuck (see figure E)
Clamp the short end of a hex key 17 into the key-
less chuck 1.
Place the machine on a stable surface (e.g. a
workbench). Hold the machine firmly and loosen
the keyless chuck 1 by turning the hex key 17 in
rotation direction n. Loosen a tight-seated key-
less chuck by giving the long end of the hex key
17 a light blow. Remove the hex key from the key-
less chuck and completely unscrew the keyless
chuck.
Mounting the Drill Chuck (see figure F)
The keyless chuck is mounted in reverse order.
Note: After mounting the keyless chuck, screw
the securing screw 16 back in again.
The drill chuck must be tightened with a
tightening torque of approx. 10–25 Nm.
Operation
Starting Operation
Inserting the Battery
f Use only original Bosch lithium ion batteries
with the voltage listed on the nameplate of
your power tool. Using other batteries can
lead to injuries and pose a fire hazard.
Set the rotational direction switch 5 to the center
position to protect the power tool against acci-
dental starting.
Insert the charged battery 8 from the front into
the base of the power tool. Push the battery com-
pletely into the base until the red stripe can no
longer be seen and the battery is securely locked.
Reversing the Rotational Direction
(see figure G)
The rotational direction switch 5 is used to re-
verse the rotational direction of the machine.
However, this is not possible with the On/Off
switch 6 actuated.
Right Rotation: For drilling and driving in screws,
push the rotational direction switch 5 left to the
stop.
OBJ_BUCH-503-001.book Page 11 Wednesday, September 26, 2007 12:44 PM
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