Milwaukee 1680-20 Operator's Manual page 8

Reversing (Fig. 11)
Fig. 11
Forward
(clockwise)
Reverse
(counterclockwise)
A reversing switch is located opposite the trigger switch for removal of
bits from holes. Permit the motor to come to a complete stop before
reversing. Reversing the tool with the gears in motion may cause severe
damage. When removing selfeed bits from partially drilled holes, flick the
trigger switch when the tool is in reverse to free the threaded pilot
screw. When the threads are loose, lift the bit from the workpiece with
the motor stopped.
Starting, Stopping and Controlling Speed
To reduce the risk of injury, keep hands and cord
away from the bit and all moving parts.
1. To start the tool, pull trigger switch.
2. To stop the tool, release the trigger switch.
page 8
WARNING!
Drilling
To reduce the risk of explosion, electric shock
and property damage, always check the work
area for hidden pipes and wires before drilling.
1. Before drilling, be sure the workpiece is clamped securely. A poorly
secured piece of material may result in personal injury or inaccurate
drilling. Use backing material to prevent damage to the workpiece
during breakthrough. When drilling in light gauge metal or wood, use
a wooden block to back up the material to prevent damage to the
workpiece.
2. When starting a hole, place the drill bit on the work surface and
apply firm pressure.
To start a selfeed bit, run the threaded feed screw into the work by
flicking the trigger switch, permitting the bit to coast until the teeth
contact the work surface. Align the bit properly before proceeding.
This will reduce cocking and jamming when starting.
When drilling in metal, mark the center of the hole to be drilled with a
center punch to give the bit a start and to prevent it from "walking."
Lubricate the drill bit with cutting oil when drilling iron or steel. Use a
coolant when drilling nonferrous metals such as copper, brass or
aluminum.
3. Always apply pressure in line with the bit. Use enough pressure to
keep the drill biting, but do not push hard enough to cause the bit to
bind.
When using twist drill bits, pull the bit out frequently to clear chips
from the flutes.
When using selfeed bits, if the clutch slips, pull the bit up very
slightly and then push it toward the workpiece. Repeat this several
times.
4. Reduce pressure and ease the bit through the last part of the hole.
While the tool is still running, pull the bit out of the hole to prevent
jamming.
When using selfeed bits, decrease the drilling pressure when the
feed screw point breaks through the workpiece. Proceed with steady,
even pressure.
WARNING!