Installing And Removing The Battery Pack; Changing Blades; Lower Blade Guard - DeWalt DCS391 Guide D'utilisation

at least 1" (25.4 mm) long, with a screw head diameter of
0.28–0.35" (7–9 mm), screwed into wood to an optimal
depth leaving approximately 7/32" (5.5 mm) of the screw
exposed. Align the slots on the back of the charger with the
exposed screws and fully engage them in the slots.
SAVE THESE INSTRUCTIONS FOR
FUTURE USE
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. D)
nOTE: For best results, make sure your battery pack is
fully charged.
To install the battery pack 3
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 13 and firmly pull the battery pack out of the tool
handle. Insert it into the charger as described in the charger
section of this manual.
Proper Hand Position (Fig. L, Q)

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 20 and one hand on the auxilliary handle
Trigger Switch (Fig. E)

WARNING: This tool has no provision to lock the
trigger switch in the ON position and should never be
locked ON by any other means.
Release the trigger switch lock-off button
button as shown. Pull the trigger switch
on. Releasing the trigger switch turns the motor off.

Changing Blades

To Install the Blade (Fig. A, F, G)

WARNING: Remove battery before service,
adjustment, installing or removing accessories.
1. Place inner clamp washer
the large flat surface facing out toward the blade.
2. Retract the lower blade guard
on saw spindle against the inner clamp washer, making
sure that the blade will rotate in the proper direction (the
direction of the rotation arrow on the saw blade and the
teeth must point in the same direction as the direction of
rotation arrow on the lower blade guard). Do not assume
that the printing on the blade will always be facing
into the tool handle, align the
12 .
1 by pressing the
2 to turn the motor
15 on saw spindle 17 with
7 and place blade 18
you when properly installed. When retracting the lower
blade guard to install the blade, check the condition
and operation of the lower blade guard to assure that
it is working properly. Make sure it moves freely and
does not touch the blade or any other part, in all angles
and depths of cut.
3. Place outer clamp washer
large flat surface against the blade with beveled side
facing out.
4. Thread blade clamping screw
hand (screw has left-hand threads and must be turned
counterclockwise to tighten).
5. Depress the blade lock button
spindle with the blade wrench
engages and the blade stops rotating.
6. Tighten the blade clamping screw firmly with the
blade wrench.
nOTE: Never engage the blade lock while saw is running, or
engage in an effort to stop the tool. Never turn the saw on
while the blade lock is engaged. Serious damage to your saw
will result.
To Replace the Blade (Fig. A, F, G)

WARNING: Remove battery before service, adjustment,
installing or removing accessories.
1. To loosen the blade clamping screw
blade lock button 11 and turn the saw spindle with
the blade wrench 14 until the blade lock engages and
the blade stops rotating. With the blade lock engaged,
turn the blade clamping screw clockwise with the blade
wrench (screw has left-hand threads and must be turned
clockwise to loosen).
2. Remove the blade clamping screw
washer 16 only. Remove old blade.
3. Clean any sawdust that may have accumulated in the
guard or clamp washer area and check the condition
and operation of the lower blade guard as previously
outlined. Do not lubricate this area.
4. Select the proper blade for the application (see Blades).
Always use blades that are the correct size (diameter)
with the proper size and shape center hole for mounting
on the saw spindle. Always assure that the maximum
recommended speed (rpm) on the saw blade meets or
exceeds the speed (rpm) of the saw.
5. Follow steps 2 through 6 under To Install the
Blade, making sure that the blade will rotate in the
proper direction.

Lower Blade Guard


WARNING: The lower blade guard is a safety
feature which reduces the risk of serious personal
injury. Never use the saw if the lower blade
guard is missing, damaged, misassembled
or not working properly. Do not rely on the
lower blade guard to protect you under all
circumstances. Your safety depends on following
all warnings and precautions as well as proper
operation of the saw. Check lower blade guard
English
16 on saw spindle with the
8 into saw spindle by
11 while turning the saw
14 until the blade lock
8 , depress the
8 and outer clamp
11