Auxiliary Handle; Depth Gauge - Bosch HD21-2 Operating And Safety Instructions Manual

BM 2609932660 06-11:BM 2609932660 06-11 6/1/11 8:54 AM Page 8
Disconnect the plug from
WARNING
the power source before
making any assembly, adjustments or
changing accessories. Such preventive
safety measures reduce the risk of starting the
tool accidentally.
INSERTING BIT
For small bits, open jaws enough to insert the
bit up to the flutes. For large bits, insert the bit
as far as it will go. Center the bit as you close
the jaws by hand. This positions the bit
properly, giving maximum contact between the
chuck jaws and the bit shank.
To tighten chuck, insert key into each of the
three key holes in succession and tighten

AUxILIARy HANDLE

The tool must be supported with the auxiliary
handle, which can be swiveled and locked into
12 positions 360˚ around the collar mount.
To reposition and/or swivel the handle, rotate
lower portion of hand grip counter-clockwise,
push handle forward until it disengages from
locking teeth in the collar mount, move handle
to the desired position and push handle inward
until it engages into desired position, then
securely tighten hand grip clockwise (Fig. 3).

DEPTH GAUGE

Your drilling depth can be pre-set and/or
repeated by using the depth gauge.
Setting depth: After the auxiliary handle is
installed, make sure the accessory has been
fully inserted into the chuck before setting the
depth gauge (Fig. 3).
To adjust depth, push the depth gauge
release button, slide the depth gauge to
VARIAbLE SPEED CONTROLLED
TRIGGER SWITCH
Your tool is equipped with a variable speed trigger
switch. The tool can be turned "ON" or "OFF" by
squeezing or releasing the trigger. The speed
Assembly
clockwise firmly. The chuck can be released by
using one hole only (Fig. 2).
FIG. 2
desired depth and release pressure on button
to lock the depth gauge in place (Fig. 3).
COLLAR MOUNT
FIG. 3
Operating Instructions
can be adjusted from the minimum to maximum
nameplate RPM by the pressure you apply to the
trigger. Apply more pressure to increase the
speed and release pressure to decrease speed
(Fig. 1).
-8-
Counter
Clockwise
LOCKING
TEETH
x
HAND GRIP
Clockwise
Clockwise
DEPTH
GAUGE
RELEASE
BUTTON
Counter
Clockwise