DeWalt DCS781 User Manual

14
ENGLISH
bevel pawl, remove the retaining screw, the 22.5° bevel pawl and the 30° crown bevel pawl.
Flip the crown bevel pawl so the 33.9°  is facing up. Reattach the screw to secure the 22.5°
bevel pawl and the crown bevel pawl. The accuracy setting will not beaffected.
22.5° Bevel Pawls (Fig.J)
Your saw is equipped to rapidly and accurately set a 22.5° bevel, left or right. The 22.5° bevel
pawl
47
can be rotated to contact the crown adjustmentscrew.
Rail Lock Knob (Fig.A)
The rail lock knob
30
allows you to lock the saw head firmly to keep it from sliding on the
rails. This is necessary when making certain cuts or when transporting thesaw.
Depth Stop (Fig.A)
The depth stop
25
allows the depth of cut of the blade to be limited. The stop is useful for
applications such as grooving and tall vertical cuts. Rotate the depth stop forward and adjust
the depth adjustment screw
29
to set the desired depth of cut. To secure the adjustment,
tighten the wing nut
22
. Rotating the depth stop to the rear of the saw will bypass the depth
stop feature. If the depth adjustment screw is too tight to loosen by hand, the provided blade
wrench can be used to loosen thescrew.
Slide Lock Transport Lever (Fig.L1–L3)
Slide Lock Position (Fig.L1)
The slide lock transport lever
61
in forward location locks saw for maximize vertical
cuttingcapacity.
Transport Position (Fig.L2)
The slide lock transport lever
61
in rear location locks saw in the transport position to secure
the saw head during transport and storage. Recommended for relocating or carrying thesaw.
Stow Position (Fig.L3)
When not in use, the slide lock transport lever
61
can be placed in a stow position. The slide
lock lever locks in place using an indent on the back of the lever that slides up the ramp and
falls into the cast pocket
65
. To unlock the lever, slightly pull the lever till it clears out of the
cast pocket and rotateclockwise.
Automatic Electric Brake
Your saw is equipped with an automatic electric blade brake which stops the saw blade within
5seconds of trigger release. This is notadjustable.
On occasion, there may be a delay after trigger release to brake engagement. On rare
occasions, the brake may not engage at all and the blade will coast to astop.
If a delay or “skipping” occurs, turn the saw on and off 4or 5times. If the condition persists,
have the tool serviced by an authorized DeWALT servicecenter.
Always be sure the blade has stopped before removing it from the kerf. The brake
is not a substitute for guards or for ensuring your own safety by giving the saw your
completeattention.
Wireless Tool Control (Fig. A)

CAUTION: Read all saftey warnings, instruction and specifications of the appliance which
is paired with thetool.
Your tool is equipped with a Wireless Tool Control transmitter which allows your tool to be
wirelessly paired with another Wireless Tool Control device, such as a dustextractor.
To pair your tool using Wireless Tool Control, press and hold the trigger switch
1
on the tool
and the Wireless Tool Control pairing button on the seperate device. An LED on the seperate
device will let you know when your tool has been successfullypaired.
Prior to Operation
• Install the base extensions to both sides of the saw's base. Refer to Assembling the Base
Extensionssection.
• Check the protective belt cover for damage and the proper functioning of the lowerguard.
• Make sure to use the kerf plate. Do not operate the machine if the kerf slot is wider than
12mm.
• Install the appropriate saw blade. Do not use excessively worn blades. The maximum
rotation speed of the tool must not exceed that of the sawblade.
• Make sure all locking knobs and clamp handles aretight.
• Use personal protective equipment and connect the saw to an external dustextractor.
• Although this saw will cut wood and many nonferrous materials, these operating
instructions refer to the cutting of wood only. The same guidelines apply to the other
materials. Do not cut ferrous (iron and steel) materials, fibre cement or masonry with this
saw!
• Do not attempt to cut excessively small pieces.
• Secure theworkpiece.
• Allow the blade to cut freely. Do notforce.
• Allow the motor to reach full speed beforecutting.
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.
Installing and Removing the Battery Pack (Fig. A)

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
3
into the tool handle, align the 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
4
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.
Body and Hand Position (Fig. M)

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 positioning of your body and hands when operating the mitre saw will make cutting
easier, more accurate and safer. Never place hands near cutting area. Place hands no closer
than 100mm from the blade. Hold the workpiece tightly to the table and the fence when
cutting. Keep hands in position until the trigger has been released and the blade has
completely stopped. ALWAYS MAKE DRY RUNS (UNPOWERED) BEFORE FINISH CUTS SO THAT
YOU CAN CHECK THE PATH OF THE BLADE. DO NOT CROSS ARMS, AS SHOWN IN FIGUREM.
Keep both feet firmly on the floor and maintain proper balance. As you move the mitre arm
left and right, follow it and stand slightly to the side of the saw blade. Sight through the guard
louvers when following a pencilline.
Trigger Switch (Fig. N)
To turn the saw on, push the lock‑off lever
41
to the left, then depress the trigger switch
1
.
The saw will run while the switch is depressed. Allow the blade to spin up to full operating
speed before making the cut. To turn the saw off, release the switch. Allow the blade to stop
before raising the saw head. There is no provision for locking the switch on. A hole
52
is
provided in the trigger for insertion of a padlock to lock the switchoff.
Always be sure the blade has stopped before removing it from thekerf.
Dust Extraction (Fig. O)

WARNING: To reduce the risk of serious personal injury, turn tool off, remove the
battery pack, and place lock lever in the transport position before transporting,
making any adjustments, cleaning, repairing, or removing/installing
attachments or accessories. An accidental start‑up can causeinjury.

CAUTION: Never operate this saw unless the dust bag or DeWALT dust extractor is
in place. Wood dust may create a breathinghazard.
Dust from materials such as lead‑containing coatings and some wood types, can be harmful
to one’s health. Breathing‑in the dust can cause allergic reactions and/or lead to respiratory
infections of the user or bystanders. Certain dust, such as oak or beech dust, is considered
carcinogenic, especially in connection with wood treatmentadditives.
Observe the relevant regulations in your country for the materials to be worked. The vacuum
cleaner must be suitable for the material beingworked.
When vacuuming dry dust that is especially detrimental to health or is carcinogenic, use a dust
class M vacuumcleaner.
Your saw has a built‑in dust port
17
that allows an Airlock™ compatible dust collection
system to beconnected.
To Attach the Dust Bag (Fig.P)
1. Fit the dust bag
53
to the dust port
17
as shown in FigureP.
To Empty the Dust Bag (Fig.P)
1. Remove dust bag
53
from the saw and gently shake or tap the dust bag toempty.
2. Reattach the dust bag back onto the dust port
17
.
You may notice that all the dust will not come free from the bag. This will not affect cutting
performance but will reduce the saw's dust collection efficiency. To restore your saw's dust
collection efficiency, depress the spring inside the dust bag when you are emptying it and tap
it on the side of the trash can or dustreceptacle.
Through‑Cutting Operations (Fig. A)
If the slide feature is not used, ensure the saw head is pushed back as far as possible and
the rail lock knob is tightened. This will prevent the saw from sliding along its rails as the
workpiece isengaged.
NOTE: Although this saw will cut wood and many non‑ferrous materials, we will limit our
detailed discussion to the cutting of wood only. The same guidelines apply to the other
materials. DO NOT CUT FERROUS (IRON AND STEEL) MAT ERIALS OR MASONRY WITH THIS
SAW. Do not use any abrasiveblades.
NOTE: Refer to Guard Actuation and Visibility in the Assembly and Adjustments section
for important information about the lower guard beforecutting.
Crosscuts (Fig.A, Q)
A crosscut is made by cutting wood across the grain at any angle. A straight crosscut is made
with the mitre arm at the zero degree position. Set and lock the mitre arm at zero, hold the
wood firmly on the table and against the fence. With the rail lock knob tightened, turn on the
saw by squeezing the trigger switch
1
shown in FigureA.
When the saw comes up to speed (about 1second) lower the arm smoothly and slowly to cut
through the wood. Let the blade come to a full stop before raising arm.

DeWalt DCS781 Specifications

General

Brand	DeWalt
Model	DCS781
Category	Saw
Language	English