-8-
SELECTOR DIAL
The selector dial allows the tool to be set for
various applications as listed in the following
chart, (Fig. 3).
When using demolition or chipping bits such
as bull points, chisels, spades, gouges, etc.
the “Hammer Only” mode must be selected.
SELECTOR DIAL - “VARIO-LOCK”
Adjusting the Vario-Lock: The vario-lock can
be set in any one of thirty-six (10˚ increments)
positions. Choose a position which is best
suited for your operation.
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.
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.
TOOL TIPS
For the best penetration rates in concrete,
run the tool with a steady pressure, but do
not use excessive force as this will decrease
the efficiency of the tool.
All grease packed hammers require a short
period of time to warm up. Depending on the
room temperature, this time may vary from
approximately 15 seconds (90˚F) to 2
minutes (32˚F). A new hammer requires a
break-in period before full performance is
realized. This period may require up to 5
hours of operation.
A rotary hammer is likely to be the most
expensive portable tool at the construction
job. The long wear and efficient operation of
the BOSCH hammers will more than justify
the cost for tools of this type. As earlier
pointed out, sharp accessories as well as
clean air vents are necessary for efficient
operation. Establish and follow a set
maintenance program.
=
drilling only:
used for... drilling
wood, steel, etc.
=
drilling/hammering:
used for... drilling
concrete
=
hammering only:
used for... light
chipping work
=
vario-lock:
allows for 36 desired
positions of “hammer”
accessories
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