Bosch 11239VS - Manual (Page 7)

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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 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.
INSTALLING ACCESSORIES
Clean the insert shank end of the accessory
to remove any debris, then lightly grease with
a light oil or lubricant (Fig. 2).
Insert accessory into the tool holder through
the dust shield, while twisting and pushing
inward until it locks automatically into place.
Pull outward on the accessory to be certain it
is locked into the tool holder (fig. 3).
NOTE: The high efficiency available from the
rotary hammers can only be obtained if sharp
and undamaged accessories are used. The
"cost" to maintain sharp and undamaged
accessories is more than offset by the "time
saved" in operating the tool with sharp
accessories.
REMOVING ACCESSORIES
Accessories may be hot after
use. Avoid contact with skin
and use proper protective gloves or cloth to
remove.
To remove an accessory, pull and hold
locking sleeve backward and pull bit forward.
All accessories should be wiped clean after
removing.
Operating Instructions
! WARNING
FIG. 2
DRILL/HAMMER DRILL SELECTION DIAL
The selector dial allows the tool to be set for
various drilling applications. Shift the dial
right or left depending on the below
applications.
Do not operate the selection
dial until the tool come to a
complete stop. Shifting during rotation of the
chuck can cause damage to the tool.
Do not use demolition or chipping bits such
as bull points, chisels, spades, gouges, etc.
Drill only action: For drilling
in woods, metals, plastics or
other non concrete materials.
Drill with hammer action:
For drilling in concrete,
asphalt, tile or other similar
hard materials.
! CAUTION
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.
AUXILIARY HANDLE
The tool must be supported with the
auxiliary handle, which can be swiveled 360˚.
To reposition and/or swivel the handle,
loosen the hand grip, move the handle to the
desired position along the barrel and
securely retighten the hand grip.
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, push down on the depth gauge
FIG. 3
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