Familiarization; Bench Mounting; Changing Or Installing A New Saw Blade; Removing The Blade - DeWalt DWS780-XE Instruction Manual

ANGLE MAXIMUM CAPACITY OF CUT
Height
0° miter
Width 349 mm (13.75")
Height
45° miter
Width
Height
45º bevel – left
Width 349 mm (13.75")
Height
45º bevel – right
Width 349 mm (13.75")
Your saw is capable of cutting baseboard moldings held vertically 20 mm (0.8") thick by 171 mm (6.75") tall on a
45º right or left miter, when using the slide lock lever (Fig. 13).
NOTE: Your saw is capable of cutting the following once a special setup procedure is followed. Refer to Special
Cuts.
0° miter Height 38 mm (1.5")
45º miter Height 38 mm (1.5")
DRIVE
230 volt motor
1675 watts in 7.5 amp motor
3800 RPM Cut helical gears
Multi-V belt Roller bearings
Automatic electric brake Carbide blade
Familiarization (fig. 1, 9)
Your miter saw is fully assembled in the car ton.
Examine figure 1 to become familiar with the saw and its various parts. The section on adjus tments will refer to
these terms and you must know what and where the parts are.
CAUTION: Risk of personal injury. Keep thumb underneath handle when pulling handle down otherwise thumb
may be pinched between handle and moving lower guard. The handle is placed close to the guard for special cuts.
1. Open the box and lift the saw out by the con venient carrying handle (D),
as shown in figure 9.
2. Place the saw on a smooth, flat surface.
3. Release the rail lock knob (G), and push the saw head back to lock it in
the rear position.
4. Press down lightly on the operating handle (C) and pull out the lock down
pin (L).
5. Gently release the downward pressure and hold the operating handle,
allowing it to rise to its full height.
Bench Mounting (fig. 1)
Holes (R) are provided in all four feet to facilitate bench mounting. Two different-sized holes are provided to
accommodate different sizes of screws. Use either hole; it is not necessary to use both.
Always mount your saw firmly to a stable surface to prevent movement. To enhance the tool's portability, it can
be mounted to a piece of 12.7 mm (1/2") or thicker plywood which can then be clamped to your work support or
moved to other job sites and reclamped.
NOTE: If you elect to mount your saw to a piece of plywood, make sure that the mounting screws don't 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.
CAUTION: 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 sits firmly on the
mounting surface.
RESULT
112 mm (4.4") Width 231 mm (9.1")
Height 76 mm (3.0")
112 mm (4.4") Width 147 mm (5.8")
244 mm (9.6") Height 76 mm (3.0")
79 mm (3.1") Width 290 mm (11.4")
Height 43 mm (1.7")
56 mm (2.2") Width 290 mm (11.4")
Height 28 mm (1.1")
Width 409 mm (16.1")
Width 297 mm (11.7")
FIG. 9
Changing or Installing a New Saw Blade (Fig. 10A-10C)
WARNING: To reduce the risk of serious personal injury, turn off the tool and disconnect it from the power
source before attempting to move it, change accessories or make any adjustments.
CAUTION:
• Never depress the spindle lock button while the blade is under power or coasting.
• Do not cut ferrous metal (containing iron or steel) or masonry or fiber cement product with this miter
saw.
NOTE: The blade guard on your saw will automatically raise when the head up-lock release lever (i) is pushed and
the arm is brought down; it will lower over the blade as the arm is raised.

REMOVING THE BLADE

1. Unplug the saw.
2. Raise the arm to the upper position and raise the lower guard (A) as far as possible.
3. Loosen, but do not remove guard bracket screw (B) until the bracket can be raised far enough to access the
blade screw (PP). Lower guard will remain raised due to the position of the guard bracket screw.
FIG. 10A
CC
4. Depress the spindle lock button (QQ) while carefully rotating the saw blade by hand until the lock engages.
5. Keeping the button depressed, use the other hand and the wrench provided (CC) to loosen the blade screw.
(Turn clockwise, left-hand threads.)
6. Remove the blade screw (PP), outer clamp
washer (RR), blade (SS) and blade adapter (I),
if used. The inner clamp washer (TT) may be
left on the spindle.
NOTE: For blades with a blade hole of 15.88 mm
(5/8"), the 25.4 mm (1") blade adapter (I) is not
used.
INSTALLING A BLADE
1. Unplug the saw.
2. With the arm raised, the lower guard held open
and the guard bracket raised, place the blade
on the spindle, onto the blade adapter (if using
a blade with a 1" [25.4 mm] diameter blade
hole) and against the inner blade clamp with
the teeth at the bottom of the blade pointing
toward the back of the saw.
3. Assemble the outer clamp washer onto the
spindle.
4. Install the blade screw and, engaging the spindle lock, tighten the screw firmly with wrench provided (turn
counterclockwise, left-hand threads).
5
FIG. 10B
A
B
PP
FIG. 10C
RR
PP
QQ
SS
I
TT