DeWalt DW217 Guide D'utilisation page 6

THE REVERSING LEVER
The reversing lever changes the direction of rotation of the drill and is
used when backing out screws and jammed drill bits. To operate the
tool in reverse, release the trigger switch and push the lever to the left
(when viewed from the chuck end) as shown in Figure 2. To operate
the drill in forward for drilling holes or driving screws (as well as when
using other accessories) release the trigger switch and push the lever
to the right (when viewed from the chuck end).
Return the reversing lever to the forward position after all operations
in reverse are completed.
SWITCH LOCK-ON
Your drill is equipped with a switch lock-on feature. If you wish to dis-
able this feature, take your tool to any authorized service center. The
service center can provide a lock-out key to prevent the unit from
being locked in the on position (Figure 3).
Operation
DRILLING
1. Always unplug the drill when attaching or changing bits or acces-
sories.
2. Use sharp drill bits only. For WOOD, use twist drill bits, spade bits,
power auger bits, or hole saws. For METAL, use high speed steel
twist drill bits or hole saws. For MASONRY, such as brick, cement,
cinder block, etc., use carbide-tipped bits.
3. Be sure the material to be drilled is anchored or clamped firmly. If
drilling thin material, use a wood "back-up" block to prevent damage
to the material.
4. Always apply pressure in a straight line with the bit. Use enough
pressure to keep the drill biting, but do not push hard enough to
stall the motor or deflect the bit.
5. Hold the tool firmly to control the twisting action of the drill.
6. IF THE DRILL STALLS, it is usually because it is being overloaded
or improperly used. RELEASE THE TRIGGER IMMEDIATELY,
remove the drill bit from work, and determine cause of stalling. DO
NOT CLICK TRIGGER OFF AND ON IN AN ATTEMPT TO
START A STALLED DRILL — THIS CAN DAMAGE THE DRILL.
7. To minimize stalling or breaking through the material, reduce pres-
sure on drill and ease the bit through the last fractional part of the
hole.
8. Keep the motor running when pulling the bit out of a drilled hole.
This will help prevent jamming.
9. With Variable Speed Drills there is no need to center punch the
point to be drilled. Use a slow speed to start the hole and acceler-
ate by squeezing the trigger harder when the hole is deep enough
to drill without the bit skipping out.
Keyed Chucks
Open chuck jaws by turning collar with fingers and insert shank of bit
about 3/4" into chuck. Tighten chuck collar by hand. Place chuck key in
each of the three holes, and tighten in CLOCKWISE direction. It's
important to tighten chuck with all three holes to prevent slippage. To
release bit, turn chuck key COUNTERCLOCKWISE in just one hole,
then loosen the chuck by hand. Any authorized D
can install a keyless chuck in place of a keyed chuck.
Keyless Chucks
Open chuck jaws by turning plastic collar with fingers and insert shank
of bit about 3/4" into chuck. Tighten plastic collar CLOCKWISE while
depressing spindle lock button on the right side of the tool housing
(Fig. 4). To release bit, turn plastic collar COUNTERCLOCKWISE
while depressing the spindle lock button (Fig. 4).
NOTE: DO NOT DEPRESS LOCK BUTTON WHILE OPERATING
DRILL or while the chuck is moving.
Drilling in Metal
Use a cutting lubricant when drilling metals. The exceptions are cast
iron and brass which should be drilled dry. The cutting lubricants that
work best are sulfurized cutting oil or lard oil; bacon-grease will also
serve the purpose.
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WALT service center
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