DeWalt DCS778

11
ENGLISH
This unit is designed for use with a nominal blade diameter 250mm carbide
tipblade.
DO NOT use under wet conditions or in presence of flammable liquids
orgases.
These miter saws are professional powertools.
DO NOT let children come into contact with the tool. Supervision is
required when inexperienced operators use thistool.

WARNING! Do not use the machine for purposes other thanintended.
• 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

WARNING: To reduce the risk of serious personal injury, turn
machine 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
DeWALT
battery packs andchargers.
Unpacking
The motor and guards are already assembled onto thebase.
Inserting and Removing the Battery Pack from the
Tool (Fig. A–C)
NOTE: Make sure your battery pack
26
is fullycharged.
To Install the Battery Pack into the Tool
1. Align the battery pack
26
with the rails inside the tool’s handle (Fig. A).
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
27
and firmly pull the battery pack 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. C)
Some
DeWALT
battery packs include a fuel gauge which 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
28
. 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.
Bench Mounting (Fig.B, T)
1. Holes
21
are provided in all four feet to facilitate bench mounting.
Bolts with a diameter of 8mm and 80mm in length is suggested.
Always mount your saw firmly to prevent movement. To enhance the
portability, the tool can be mounted to a piece of 12.5mm or thicker
plywood which can then be clamped to your work support or moved to
other job sites andreclamped.
2. When mounting your saw to a piece of plywood, make sure that the
mounting screws do not protrude from the bottom of the wood.
The plywood must sit flush on the work support. When clamping the
saw to any work surface, clamp only on the clamping bosses where
the mounting screw holes are located. Clamping at any other point will
interfere with the proper operation of thesaw.
3. To prevent binding and inaccuracy, be sure the mounting surface is
not warped or otherwise uneven. If the saw rocks on the surface, place
a thin piece of material under one saw foot until the saw is firm on the
mountingsurface.
Mounting the Saw Blade (Fig.A,D, E)

WARNING: To reduce the risk of injury, turn unit off and
disconnect machine from power source before installing and
removing accessories, before adjusting or changing set-ups
or when making repairs. Be sure the trigger switch is in the OFF
position. An accidental start-up can causeinjury.
WARNING: The teeth of a new blade are very sharp and can
bedangerous.

WARNING: Be aware the saw blade shall be replaced in the described
way only. Only use saw blades as specified under Technical Data;
Cat.no.: DT4320 issuggested.
1. Insert the 6mm hex key
25
into the opposite location of the blade
shaft and hold it(Fig.D).
2. Use second hex key as shown in Figure D as spindlelock.
3. Loosen the blade bolt
6
by turning clockwise. Remove the blade bolt
and the outer flange
5
.
4. Press the lower guard lock up release lever
2
to raise the lower blade
guard
7
and remove the saw blade
8
.
5. Install the new saw blade onto the shoulder provided on the inner
flange
32
making sure that the teeth at the bottom edge of the blade
are pointing towards the fence (away from the operator).
6. Replace the outer flange
5
, making sure that the location lugs are
engaged correctly, one on each side of the motorshaft
36
.
7. Tighten the blade bolt
6
by turning anti-clockwise while holding the
6mm hex key
25
engaged with your other hand (Fig.D).
ADJUSTMENTS

WARNING: To reduce the risk of serious personal injury, turn
machine off and disconnect battery pack before making any
adjustments or removing/installing attachments or accessories.
An accidental start-up can causeinjury.
Your mitre saw was accurately adjusted at the factory. If readjustment
due to shipping and handling or any other reason is required, follow the
steps below to adjust your saw. Once made, these adjustments should
remainaccurate.
Adjusting the Traverse Bars for Constant Cutting
Depth (Fig.A,B,F,H)
The blade must run at a constant cutting depth along the full length of the
table and must not touch the fixed table at the rear of the slot or at the front
of the rotating arm. To achieve this, the traverse arms must be perfectly
parallel to the table when the saw head is fullydepressed.
1. Press the lower guard lock up release lever
2
(Fig.A).
2. Press the saw head fully to the rear position and measure the height
from the rotating table
14
to the bottom of the outer flange
5
(Fig.F).
3. Turn the saw head traverse lock
18
(Fig.B).
4. Keeping the saw head fully depressed, pull the head to the end of
itstravel.
5. Measure the height indicated in figureF again. Both values should
beidentical.
6. If adjustment is required, proceed as follows (Fig.H):
a. Loosen the locknut
37
in the bracket
38
and adjust the screw
39
as required, proceeding in smallsteps.
b. Tighten the locknut
37
.