DeWalt Comprehensive Guide to Operation and Maintenance of Power Hammers

DRILL-ONLY MODE

To use drill-only mode, depress button

(D)and turn the dial so the yellow arrow points to the corresponding symbol as shown. Use drill-only mode for wood, metal, and plastics.

HAMMER/DRILL MODE

To use hammer/drill mode, depress the button and turn the dial so the yellow arrow points to the corre- sponding symbol as shown. Use this mode for masonry drilling.

CHISEL ROTATION

To manually rotate the chisel, depress the button and turn the dial so the yel- low arrow points to the corresponding symbol as shown.

HAMMER-ONLY MODE

For light chiseling, depress the button and turn the dial so the yellow arrow points to the corresponding symbol as shown.

NOTE: The yellow arrow on the mode selector MUST be aligned with the one of the symbols at all times. There are no operable positions between the positions.

FIGURE 3

DRILL-ONLY

MODE

D

HAMMER/DRILL

MODE

CHISEL

ROTATION

D

HAMMER-ONLY

MODE

Operation

DRILLING

1.	Always unplug the drill when attaching or changing bits or
	accessories.
2.	Use sharp drill bits only. For WOOD, use twist drill bits, spade bits,
	power auger bits, or hole saws. For METAL, use steel twist drill
	bits or hole saws. For MASONRY, such as brick, cement, cinder
	block, etc., use carbide-tipped bits rated for percussion drilling. Be
	sure the material to be drilled is anchored or clamped firmly. If
	drilling thin material, use a wood “back-up” block to prevent dam-
	age to the material.
3.	Always apply pressure in a straight line with the bit. Use enough
	pressure to keep drill biting, but do not push hard enough to stall
	the motor or deflect the bit.
4.	Hold tool firmly to control the twisting action of the drill.
5.	IF DRILL STALLS, it is usually because it is being overloaded or
	improperly used. RELEASE TRIGGER IMMEDIATELY, remove
	drill bit from work, and determine cause of stalling. DO NOT
	CLICK TRIGGER ON AND OFF IN AN ATTEMPT TO START A
	STALLED DRILL — THIS CAN DAMAGE THE DRILL.
6.	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.
7.	Keep the motor running when pulling the bit back out of a drilled
	hole. This will help prevent jamming.
8.	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 accel-
	erate by squeezing the trigger harder when the hole is deep

English

SDS Chuck (Fig. 4)

To insert bit, insert shank of bit about 3/4" into chuck. Push and rotate bit until it locks in place. The bit will be securely held.

To release bit, pull the sleeve (D) back and remove the bit.

enough to drill without the bit skipping out.

REMOVABLE SDS CHUCK & 3 JAW KEYLESS CHUCK (D25304 ONLY)

The D25304 is equipped with a removable quick change SDS chuck as well as a removable 3 jaw keyless chuck. The hammer mechanism

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