909 DWL850 Instruction Manual - Page 8

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Operation

Note.

Always ensure that the tool is switched off and the

plug is removed from the power point before making any

adjustments or maintenance procedures. Always wear

sturdy gloves when handling or changing drill bits, as they

can be very sharp.

On/off switch

Push the on/off switch (1) forward

and up over the latching ramp to

lock the switch on.

To turn the tool off, press the rear

of the switch and lift it over the

latching ramp.

Motor housing

Take care not to cover the ventilation grills when holding the

tool whilst drilling.

Carbon brush caps

To gain access to the carbon brush and spring sets,

unscrew the two brush cap covers (3).

Bit holder

To replace or change drill bits,

rotate the bit holders (4) until

the bit clamping screws (5) are

accessible from the top of the

machine.

Loosen the clamping screws (5)

with the hex key (21) provided.

Remove the unwanted drill bits

and insert the replacement bits (6) with the flat of the shank

under the clamping screw.

Tighten the clamping screws and check that the bits are

firmly secured.

Note.

Push the new bits in so that they bottom out.

Note.

After replacing drill bits it is necessary to reset the

zero position as detailed in "Adjusting the zero position".

Bit clamping screw

When tightening a bit clamping screw, take care that the flat

of the shank of the drill is directly under the screw.

Drill bit

The tool is supplied with two 10mm drill bits fitted.

Dust extraction port

Always attach a suitable

workshop vacuum or dust

collector to the dust extraction

port (7).

Handle

Hold the tool with two hands

during operation. One hand on

the housing (2) and the other on

the handle (8).

Bevel guide

The bevel guide (9) can be

swivelled through 90° to suit the angle at which the dowel

holes are to be drilled in the work piece. It is commonly

used when working on a mitred edge.

The angle of bevel can be read on the scale.

There are "click" stops at 22.5°, 45° and 67.5° to allow

quick setting to these common angles.