DeWalt DW997 Service Manual download pdf (Page 6)

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Lower torque

Cap

Higher torque

Drill mark

Impact mark

Triangle mark

4-1. Selling Point Descriptions

4-1-1. 3-mode selection

This model can be easily switched between three modes, screwdriving, drilling and impact drilling, by simply

turning the cap dial. To use it as a screwdriver, set the cap to any position between 1 and 22, depending on the

types of screws and the material to be fastened. The clutch is then engaged to adjust the tightening force among

the corresponding twenty-two torque levels.

In order to fasten large diameter wood screws or drill into metal, wood and plastic, align the cap's drill mark

" " with the triangle mark on the main body. The clutch is then directly coupled to provide the maximum

power output. Drilling into very hard materials such as brick and concrete block can be efficiently carried out by

aligning the cap impact mark " " with the triangle mark on the main body. (See Fig. 1.)

Fig. 1

4-1-2. Durable fan-cooled powerful motor

The cooling fan incorporated in the motor and the air vents provided in its outer frame greatly enhance the cooling

effect, ensuring improved durability in continuous operation.

4-1-3. 13 mm (1/2") keyless chuck

The keyless chuck facilitates fast and easy replacement of driver bits. Replacement can be carried out simply by

holding the ring with one hand, while turning the sleeve with the other hand.

4-1-4. Variable speed switch with braking function

The braking function allows the driver unit to stop rotation immediately when the trigger switch is released, which

is a convenient feature during actual working. Also, the feedback system ensures a sufficiently large torque even

in the variable speed range.

Fig. 2

Ring

Sleeve

Tighten

Loosen

Driver bit

1 2 3 4 5 6 7 8 9 10 11 ... 26 27

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DeWalt DW997 Service Manual Page 6