Intended Use; Operation; Installing And Removing The Battery - DeWalt DCST991 Instruction Manual

40v max* lithium brushless string trimmer
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SAVE THESE INSTRUCTIONS FOR
FUTURE USE
COMPONENTS (FIG. A)

WARNING:
tool or any part of it. Damage or personal injury
could result.
Refer to Figure A at the beginning of this manual for a
complete list of components.

Intended Use

This string trimmer is designed for professional trimming
applications. DO nOT use under wet conditions or in
presence of flammable liquids or gases.
This string trimmer is a professional appliance. DO nOT
let children come into contact with the tool. Supervision is
required when inexperienced operators use this appliance.
This is not an edger and is not intended to be used for
edging.
ADJUSTMENTS

WARNING:
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.

WARNING:
Damage or personal injury could result.

WARNING:
WITHOUT GUARD FIRMLY IN PLACE. The guard
must always be properly attached on the appliance to
protect the user.
The trimmer comes fully assembled. The auxiliary handle 
is positioned to maximize balance. However, if adjustment is
necessary, loosen the four bolts 
slide the auxiliary handle up or down the trimmer pole 
shown in Figure C.
Fig. C
4
13
Never modify the power
To reduce the risk of
Never remove the guard.
NEVER OPERATE appliance
 4 
with a hex wrench and
 13 
 6 
as
6
13

OPERATION


WARNING:
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.

WARNING:
protection that conforms to ANSI Z87.1 (CAN/CSA
Z94.3) while operating this appliance.

Installing and Removing the Battery

Pack (Fig. D)

WARNING:
lever is not engaged to prevent switch actuation
before removing or installing battery.
nOTE: For best results, make sure your battery pack is
fully charged.
To install the battery pack: Align the battery pack
with the rails inside the main housing and slide it into the
housing until the battery pack is firmly seated and ensure
that it does not disengage.
To remove battery pack: Depress the release button
and firmly pull the battery pack out of the main housing.
Insert it into the charger as described in the charger section
of this manual.
Fig. D
10
11
Proper Hand Position (Fig. E)

WARNING:
personal injury, ALWAYS use proper hand position
as shown.

WARNING:
personal injury, ALWAYS hold securely in anticipation
of a sudden reaction.
Proper hand position requires one hand on the primary
handle 
 12 
and one hand on the auxiliary handle 
English
To reduce the risk of
Always use proper eye
Make certain the lock-off
 10 
 11 
To reduce the risk of serious
To reduce the risk of serious
 4 
.
7

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