Operation - DeWalt DCF887 Instruction Manual

nOTE: The chuck
6 accepts 1/4" (6.35 mm) hex accessories
and 1" (25.4 mm) bit tips only.
Place the forward/reverse button
(center) position and remove battery pack before
changing accessories.
To install an accessory, fully insert the accessory. The
accessory is locked into place (Fig. H).
To remove an accessory, pull the chuck collar
from the front of the tool. Remove the accessory (Fig. H).

OPERATION


WARNING: To reduce the risk of serious personal
injury, turn unit off and remove the battery pack
before making any adjustments or removing/installing
attachments or accessories. An accidental start‑up can
cause injury.
Installing and Removing the Battery Pack (Fig. F)

WARNING: Ensure the tool/appliance is in the off
position before inserting the battery pack.
nOTE: For best results, make sure your battery pack is
fully charged.
To install the battery pack
battery pack with the rails inside the tool's handle and slide
it into the handle until the battery pack is firmly seated in
the tool and ensure that it does not disengage.
To remove the battery pack from the tool, press the release
button 2 and firmly pull the battery pack out of the tool
handle. Insert it into the charger.
Proper Hand Position (Fig. G)

WARNING: To reduce the risk of serious personal injury,
ALWAYS use proper hand position as shown.

WARNING: To reduce the risk of serious personal injury,
ALWAYS hold securely in anticipation of a sudden reaction.
Proper hand position requires one hand on the main
handle 11 .
Variable Speed Trigger and Forward/Reverse
Control Button (Fig. A)
The tool is turned on and off by pulling and releasing
the variable speed trigger
depressed, the higher the speed of the tool. Your tool is
equipped with a brake. The chuck will stop as soon as the
trigger switch is fully released.
A forward/reverse control button
rotational direction of the tool and also serves as a
lock-off button.
• To select forward rotation (clockwise), release the trigger
and depress the forward/reverse control button on the right
side of the tool.
• To select reverse (counterclockwise), 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.
4 in the lock-off
5 away
1 into the tool handle, align the
3 . The farther the trigger is
determines the
4
nOTE: The first time the tool is run after changing the
direction of rotation, you may hear a click on start-up. This is
normal and does not indicate a problem.
Worklights (Fig. A)

CAUTION: Do not stare into worklight. Serious eye
injury could result.
There are three worklights
collar . The worklights are activated when the trigger
5
switch is depressed. When the trigger is released, the
worklight will stay illuminated for up to 20 seconds. If
the trigger switch remains depressed, the worklights will
remain on.
nOTE: The worklights are for lighting the immediate work
surface and are not intended to be used as a flashlight.
Mode Selector (Fig. A)
Your tool is equipped with a mode selector
you to select one of three modes. Select the mode based on
the application and control the speed of the tool using the
variable speed trigger switch
Precision Drive (Fig. A)
In addition to normal impacting modes, this tool features
the Precision Drive mode which enables greater control
in lighter applications to avoid damage to materials or
fasteners. It is ideal for light applications such as cabinet
hinge screws or machine screws. Precision Drive mode will
work as a screwdriver in light applications, before hesitating
as the screw head reaches the work piece, and then (if
required) start a slow controlled impact to ensure the head
ends perfectly flush.
nOTE: This mode is for light duty screwdriving applications.
If the tool will not drive a fastener in Precision Mode,
please select mode 2 which will give the additional
power required.
Mode 1 Precision Drive
Mode 2 Normal Impacting
Mode 3 High Speed Impacting
Maximum Torque
Mode Ft.-lbs.
1 20
2 125
3 152
Usage (Fig. A)

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
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.
‑ Accessory size: Failure to use the correct accessory size
will cause a reduction in fastening torque.
English
located around the chuck
8
which allows
7
3 .
rpm 0–1000
rpm 0–2800
rpm 0–3250
in.-lbs. nm
240
1500
1825
3 to start operation.
27
170
205
7