DeWalt DW501 Guide D'utilisation page 6

FIGURE 2
REVERSING
LEVER
TRIGGER
SWITCH
LOCKING
BUTTON
Switch
To start hammerdrill, depress the trigger switch (Figure 2). To stop
hammerdrill, release the switch. To lock the trigger switch in the ON
position for continuous operation, depress the trigger switch and
push up the locking button . The tool will continue to run. To turn the
tool OFF, from a locked ON condition, squeeze and release the
trigger once. Before using the tool (each time), be sure that the
locking button release mechanism is working freely.
Do not lock the switch ON when drilling by hand so that you can
instantly release the trigger switch if the bit binds in the hole. The
locking button is for use only when the hammerdrill is mounted in a
drill press stand or other wise held stationary. Be sure to release the
locking mechanism before disconnecting the plug from the power
supply. Failure to do so will cause the hammerdrill to start
immediately the next time it is plugged in. Damage or injury could
result.
The variable speed trigger switch permits speed control. The
farther the trigger switch is depressed, the higher the speed of the
hammerdrill.
NOTE: Use lower speeds for starting holes without a centerpunch,
drilling in metal, plastics or ceramics, or driving screws. Higher
speeds are better for drilling in wood and composition board and for
using abrasive and polishing accessories.
The reversing lever is used to reverse the hammerdrill for backing
out screws or jammed bits. It is located above the trigger, shown in
Figure 2. To reverse the hammerdrill, turn it OFF and push the
reversing lever to the left (when viewed from the chuck end). To
position the lever for forward operation, turn the hammerdrill OFF
and push the lever to the right.
High/Low Speed Operation
The two speed gear drive in the dual range hammer drill permits
effective operation over an extended range of applications with
greater selection of accessories.
For LOW SPEED operation, the shift knob (see Figure 3) located
on the underside of the hammerdrill should be rotated so the "low
speed" graphic is toward the front of the tool.
For HIGH SPEED operation, should be rotated so the "high speed"
graphic is toward the front of the tool.
FIGURE 3
SHOFT
KNOB
4
FRONT OF TOOL
LOW SPEED
SETTING
HIGH SPEED
SETTING