DeWalt DCF787 Original Instructions Manual page 11

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, release the trigger switch and 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 control
button, be sure the trigger is released.
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 is a worklight located above the trigger switch
7
. The worklight is activated when the trigger switch is
1
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 worklight is for lighting the immediate work
surface and are not intended to be used as a flashlight.
Quick-Release Chuck (Fig. A, F, G)

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
(center) position or remove battery pack before changing
accessories.
Fig. F
4
Fig. G
4
in the lock-off
2
3
3
To install an accessory, fully insert the accessory into the
quick-release chuck 4 . The accessory is locked into place
(Fig. F).
To remove an accessory, pull the chuck collar
from the front of the tool. Remove the accessory from the
quick-release chuck (Fig. G).
4
Usage
Your impact tool can generate the following maximum
torque:
Cat # Ft.-Lbs.
DCF787 125

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 switch to start operation. Release 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.
Bolt size: Larger bolt diameters generally require
•
higher fastening torque. Fastening torque will also vary
according to length, grade, and torque coefficient.
• Bolt: Ensure that all threads are free of rust and other
debris to allow proper fastening torque.
Material: The type of material and surface finish of the
•
material will affect fastening torque.
• Fastening time: Longer fasten ing time results in
increased fastening torque. Using a longer fastening
time than recommended could cause the fasteners to be
overstressed, stripped or damaged.
MAINTENANCE
Your D WALT power tool has been designed to operate
e
over a long period of time with a minimum of maintenance.
Continuous satisfactory operation depends upon proper
tool care and regular cleaning.

WARNING: To reduce the risk of serious personal
injury, turn tool off and disconnect battery pack
before making any adjustments or removing/
installing attachments or accessories. An
accidental start-up can cause injury.
The charger and battery pack are not serviceable.
Lubrication
Your power tool requires no additional lubrication.
English
away
3
In.-Lbs. Nm
1500 170
9