Use and Care Manual

9
ENGLISH
Fig.E
8
Variable Speed Trigger Switch and
Forward/Reverse Control Button (Fig. F)
The driver is turned ON and OFF by pulling and releasing
the trigger switch
3
. The farther the trigger is depressed,
the higher the speed of the drill.
A forward/reverse control button
4
determines the
rotational 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.
• To select reverse, depress the forward/reverse control
button on the left side of the tool.
NOTE: The center position of the control button locks the
tool in the off position. When changing the position of the
control button, be sure the trigger is released.
NOTE: Continuous use in variable speed range is not
recommended. It may damage the switch and should
beavoided.
Fig. F
4
3
LED Work Lights (Fig. A)

WARNING: Do not place the light in a position
which may cause anyone to intentionally or
unintentionally stare into the light. Serious eye
injury couldresult.
When the impact driver is activated by pulling the variable
speed trigger switch
3
, the integrated LED work lights
7
will automatically illuminate the work area.
NOTE: The LED work light is for lighting the immediate
work surface and is not intended to be used as a flashlight.
Quick-Release Chuck (Fig. A, G, H)

WARNING: Use only impact accessories. Non-impact
accessories may break and cause a hazardous
condition. Inspect accessory prior to use to ensure that
it con tains no cracks.
NOTE: The chuck accepts 1/4" (6.35 mm) hex accessories
and 1" (25.4 mm) bit tips only.
Place the forward/reverse button
4
in the lock-
off (center) position or remove battery pack before
changingaccessories.
Fig. G
6
5
Fig. H
6
5
To install an accessory, fully insert the accessory into the
quick-release chuck
6
. The accessory is locked into place
(Fig.G).
To remove an accessory, pull the chuck collar
5
away
from the front of the tool. Remove the accessory from the
quick-release chuck
6
(Fig.H).
Usage (Fig. A)
Your impact tool can generate the following maximum
torque:
Cat # Ft.-Lbs. In.-Lbs. Nm
DCF809 125 1700 170

CAUTION: Ensure fastener and/or system will
withstand the level of torque generated by the tool.
Excessive torque may cause breakage and possible
personal injury.
1. Place the accessory on the fastener head. Keep the tool
pointed straight at the fastener.
2. Press variable speed trigger switch
3
to start operation.
Release variable speed trigger switch to stop operation.
Always check torque with a torque wrench, as the
fastening torque is affected by many factors including
the following:
- Voltage: Low voltage, due to a nearly discharged
battery, will reduce fastening torque.