-5-
Chiseling only: The HDC400 is designed to be
used for chiseling/demolition of concrete and
masonry materials with 1-1/8" hex chisels.
The dust extraction attachment should be
positioned approximately 2-4" from the tip of the
bit for best dust extraction results (Fig. 5). You
can adjust the positioning of the attachment by
opening the clamping band lever and sliding the
attachment up or down on the hammer tube.
When complete close the clamping band lever
to re-secure the attachment to the tool (Fig. 4)
For extending the adjustment, the hose can also
be moved up or down within the clamp housing.
Remove the hose from the housing, position the
hose so that the shroud is positioned for
optimum dust collection, then insert the hose
back into the clamp housing (Fig. 6).
Operating instructions
FIG. 7
DUST
PORT
SLEEVE
NOZZLE
SNAP-IN
CONNECTOR
Insert the vacuum hose from the vacuum
into the dust port of the dust extraction unit
(Fig. 7).
The Bosch vacuum hose comes with a
sleeve nozzle attached to a snap-in
connector (Fig. 7). The sleeve nozzle
provides the quickest, easiest connection of
the nozzle to the attachment. The snap-in
connector provides a more secured
connection.
To use the snap-in connector, remove the
rubber nozzle from the vacuum hos e. Press
the snap-in connector into the dust port until
you hear the click.
Dust port adaptors are also available to
connect the Bosch dust extraction
attachment to any common size vacuum
hose. See Boschtools.com for details.
Turn the vacuum on and place the tool /
attachment over the desired chiseling
location. Follow all tool safety and operating
instructions.
161992A078-HDC400_HDC400 7/11/14 2:11 PM Page 5
