Dewalt D25263K Instructional Manual

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English

• This product is not intended for use by persons (including

children) suffering from diminished physical, sensory or

mental abilities; lack of experience, knowledge or skills

unless they are supervised by a person responsible for their

safety. Children should never be left alone with thisproduct.

Torque Limiting Clutch

All rotary hammerdrills are equipped with a torque limiting

clutch that reduces the maximum torque reaction transmitted

to the operator in case of jamming of a drill bit. This feature

also prevents the gearing and electric motor from stalling.

The torque limiting clutch has been factory-set and cannot

beadjusted.

ASSEMBLY AND ADJUSTMENTS



WARNING: To reduce the risk of serious personal

injury, turn tool off and disconnect tool from power

source before making any adjustments or removing/

installing attachments or accessories. Be sure the

trigger switch is in the OFF position. An accidental start-up

can cause injury.

Selecting the Operating Mode

(Fig. B)

The tool can be used in the following operating modes:

Rotary drilling: for screwdriving and for drilling

into steel, wood and plastics

Hammerdrilling: for concrete and masonry

drilling operations.

Bit rotation: non-working position used only to

rotate a ﬂat chisel into the desired position

Hammering only (D25033, D25133, D25134,

D25143, D25144, D25263): for light chipping,

chiselling and demolition applications. In this

mode the tool can also be used as a lever to free

a jammed drillbit.

1. To select the operating mode, press the mode selector

button

5

and rotate the mode selector switch

4

until it

points to the symbol of the requiredmode.

2. Release the mode selector button and check that the mode

selector switch is locked inplace.



WARNING: Do not select the operating mode when the

tool isrunning.

Indexing the Chisel Position (Fig. B)

The chisel can be indexed and locked into differentpositions.

1. Press the mode selector button

5

and rotate the mode

selector switch

4

until it points to the “bit rotation/

hammerdrilling”position.

2. Rotate the chisel to the desiredposition.

3. Set the mode selector switch

4

to the “hammering

only”position.

4. Twist the chisel until it locks inposition.

Inserting and Removing SDS Plus Accessories

(Fig. C)

This tool uses SDS Plus accessories (refer to the inset in Fig.C for

a cross-section of an SDS Plus bit shank). We recommend using

professional accessoriesonly.

1. Clean and grease the bitshank.

2. Insert the bit shank into the SDS Plus tool holder

6

3. Push the bit down and turn it slightly until it ﬁts into

theslots.

4. Pull on the bit to check if it is properly locked. The

hammering function requires the bit to be able to move

axially several centimetres when locked in the toolholder.

5. To remove a bit, pull back the tool holder sleeve

10

and

pull out thebit.



WARNING: Always wear gloves when you change

accessories. The exposed metal parts on the tool and

accessory may become extremely hot duringoperation.

Fitting the Side Handle (Fig. D)

The side handle

8

can be ﬁtted to suit both right-handed and

left-handedusers.



WARNING: Do not use the tool without the side handle

properlyassembled.

1. Loosen the sidehandle.

2. For right-handed users: Slide the side handle clamp over

the collar behind the tool holder, handle at theleft.

For left-handed-users: Slide the side handle clamp over

the collar behind the tool holder, handle at theright.

3. Rotate the side handle to the desired position and tighten

thehandle.

Side Handle Work light (Fig.E)

D25144, D25263

The side handle on the D25144 and D25263 has a work

light

15

. The light is battery powered and operated by using

the on/off button

17

To replace the worklight’s batteries (CR2032 x 2):

1. Remove battery door screw

16

as shown in FigureE.

2. Replace the battery with the positive face

pointingoutwards.

3. Close the battery compartment and secure thescrew.

Setting the Drilling Depth (Fig. F)

1. Insert the required drill bit as describedabove.

2. Press the depth rod button

9

and keep itdepressed.

3. Fit the depth adjustment rod

7

through the hole in the

depth stopclamp.

4. Adjust the drilling depth asshown.

5. Release the depth stopclamp.

Reversing Lever (Fig. G)

The forward/reverse lever

3

is used to reverse the rotation of

the hammer for backing out fasteners or jammed bits in the

drill-onlyfunction.

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Dewalt D25263K 1-1/8 in. SDS PLUS D-Handle Hammer Kit

Instructional Manual - Page 10