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OPERATION
To reduce the risk of injury, wear safety goggles or
glasses with side shields. Unplug the tool
before changing accessories or making
adjustments.
WARNING!
Selecting Action (Fig. 3)
MILWAUKEE 7/8" Rotary Hammers have two settings: drilling only and
hammering with rotation.
1.
To select
drilling only, rotate the shift knob 180° in the direction of the
double arrow so that the tab portion of the knob points toward the
“Drill” symbol. Do not shift the tool when it is running or coasting to a
stop.
When drilling in wood or steel, shift knob to drilling and use chuck
adapter kit (see “Accessories”).
2.
To select hammering with rotation, rotate the shift knob 180° in the
direction of the double arrow so that the tab portion of the knob points
toward the “Hammer” symbol.
NOTE:
To engage the hammering mechanism, maintain pressure
on the bit. When pressure on the bit is released, the hammering
action will stop.
Using the Forward/Reverse Switch (Fig. 4)
1.
For forward (clockwise) rotation, push the forward/reverse switch to
forward as shown.
2.
For reverse (counterclockwise) rotation, push the forward/reverse
switch to reverse as shown. Check the direction of rotation beofre
use. Although an interlock prevents Using forward/reverse switch (Fig.
6) Check the direction of rotation before use. Although an interlock
prevents reversing the tool while the motor is running, allow the mo-
tor to come to a full stop before reversing.
Starting, Stopping & Controlling Speed
1.
To
start
the tool, pull the trigger
2.
To
stop
the tool, release the trigger.
3.
To vary the driving speed, simply increase or decrease pressure on
the trigger. The further the trigger is pulled, the greater the speed.
Cold Starting
If this tool is stored for a long period of time or at cold temperatures, it
may not hammer initially because the lubrication has become stiff. To
warm up the tool:
1.
Insert and lock a bit into the tool.
2.
Turn the tool on, applying force to the bit against a concrete or wood
surface.
3.
Turn the tool on and off every few seconds. In a short time, the tool
will start hammering. The colder the tool is, the longer it will take to
warm it up.
Operation
Position the tool, grasp the handles firmly and pull the trigger.
Always hold the tool securely using both handles and maintain control.
Use only enough pressure to hold the tool in place and prevent the tip of
the bit from wandering. This tool has been designed to achieve top per-
formance with only moderate pressure. Let the tool do the work.
If the speed begins to drop off when drilling deep holes, pull the bit par-
tially out of the hole while the tool is running to help clear dust.
NOTE
: Do not use water to settle the dust since it will clog the bit flutes
and tend to make the bit bind in the hole. If the bit should bind, a built-in,
non-adjustable slip clutch prevents the bit from turning. If this occurs,
stop the tool, free the bit and begin again.
Hammer
symbol
Fig. 3
Drill symbol
Fig. 4
Forward
Reverse
Forward
Reverse
