Variable Speed Switch - DeWalt DW979 Manual De Instrucciones

DW979,159361-02,00 5/8/02

Variable Speed Switch

To turn the tool "ON", squeeze the trigger switch. To turn the tool "OFF"
release the trigger. Your tool is equipped with a variable speed switch
which enables you to select the best speed for a particular application.
The farther you squeeze the trigger, the faster the tool will operate. Use
lower speeds for starting holes without a centerpunch, driving in metals
or plastics, driving screws, or in any application requiring high torque.
Higher speeds are better for driving in wood, wood compositions and
for using abrasive and polishing accessories. For maximum tool life,
use variable speed only for starting holes or fasteners.
Forward/Reverse Control Button
A forward/reverse control button determines the direction of the tool
and also serves as a "lock off" button. To select forward rotation,
release the trigger switch and depress the forward/reverse control
button on the right side of the tool, as shown in FIG. 4. To select
reverse, depress the forward/reverse control button on the left side of
the tool. The center position of the control button locks the tool in the
"OFF" position. When changing the position of the forward/reverse
control button, be sure the trigger is released.
Dead Spindle Action
All D WALT screwdrivers provide a "dead" front spindle to permit
E
fasteners to be located in the driving accessory. Clutches are held
apart by light spring pressure, permitting the drilling clutch to rotate
without turning the driven clutch and accessory. When sufficient
forward pressure is applied to the unit, the clutches engage and rotate
the spindle and accessories.
Accessory Assembly
The 1/4" hex drive ball lock chuck is used on all depth sensitive and
drywall screwdrivers. Assemble accessories by engaging the hex
spindle and tapping lightly on the accessory until it snaps into place.
Usually pliers are required to remove the accessory by pulling forward.
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ADJUSTMENT
COLLAR
FIG. 5
DEPTH
LOCATOR
FIG. 6
ADJUSTMENT
COLLAR
RELEASE
BUTTONS
6
FIG. 7
LOCATOR
ADUSTMENT
COLLAR
NUTSETTER
CLUTCH
HOUSING
CLUTCH HOUSING
BIT TIP
BIT TIP
HOLDER