Assembly And Adjustments; Operation - DeWalt DCF840NT Original Instructions Manual

English
DO nOT let children come into contact with the tool.
Supervision is required when inexperienced operators use
this tool.
Young children and the infirm. This appliance is not
•
intended for use by young children or infirm persons
without supervision.
• This product is not intended for use by persons (including
children) suffering from diminished physical, sensory or
mental abilities; lack of experience, knowledge or skills
unless they are supervised by a person responsible for their
safety. Children should never be left alone with this product.

ASSEMBLY AND ADJUSTMENTS


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.

WARNING: Use only D
Inserting and Removing the Battery Pack
from the Tool (Fig. B)
nOTE: Make sure your battery pack
To Install the Battery Pack into the Tool Handle
1. Align the battery pack 6
handle (Fig. B).
2. Slide it into the handle until the battery pack is firmly seated
in the tool and ensure that you hear the lock snap into place.
To Remove the Battery Pack from the Tool
1. Press the release button
out of the tool handle.
2. Insert battery pack into the charger as described in the
charger section of this manual.
Fuel Gauge Battery Packs (Fig. B)
Some D WALT battery packs include a fuel gauge which
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consists of three green LED lights that indicate the level of
charge remaining in the battery pack.
To actuate the fuel gauge, press and hold the fuel gauge button.
A combination of the three green LED lights will illuminate
designating the level of charge left. When the level of charge
in the battery is below the usable limit, the fuel gauge will not
illuminate and the battery will need to be recharged.
nOTE: The fuel gauge is only an indication of the charge left on
the battery pack. It does not indicate tool functionality and is
subject to variation based on product components, temperature
and end-user application.
Belt Hook (Fig. A) (Optional Accessories)

WARNING: To reduce the risk of serious personal
injury, DO NOT suspend tool overhead or suspend
objects from the belt hook. ONLY hang tool's belt hook
from a work belt.

WARNING: To reduce the risk of serious personal
injury, ensure the screw holding the belt hook is secure.
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WALT battery packs and chargers.
e
6 is fully charged.
with the rails inside the tool's
5 and firmly pull the battery pack
iMPORTAnT: When attaching or replacing a belt hook, use only
the screw that is provided. Be sure to securely tighten the screw.
A belt hook can be attached to either side of the tool using
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only the screw provided, to accommodate left- or right-
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handed users. If the hook is not desired at all, it can be removed
from the tool.
To move the belt hook, remove the screw
place then reassemble on the opposite side. Be sure to securely
tighten the screw.

OPERATION

Instructions for Use

WARNING: Always observe the safety instructions and
applicable regulations.

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.
Proper Hand Position (Fig. D)

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
Variable Speed Trigger Switch (Fig. A)
To turn the tool on, squeeze the trigger switch
the tool off, release the trigger switch. Your tool is equipped
with a brake. The chuck will stop when the trigger switch is
fully released.
The variable speed switch enables you to start the application at
a slow speed. The further you squeeze the trigger, the faster the
tool will operate. For maximum tool life, use variable speed only
for starting holes or fasteners.
nOTE: Continuous use in variable speed range is not
recommended. It may damage the switch and should
be avoided.
Forward/Reverse Control Button (Fig. A)
A forward/reverse control button
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. The centre 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.
that holds it in
9
1 . To turn
2 determines the direction of
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