Assembly And Adjustments; Changing Or Installing A New Saw Blade; Features And Controls - DeWalt DWS780 Operating Instructions Manual

EN G LI S H

ASSEMBLY AND ADJUSTMENTS

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.
Unpacking (fi g. 1A, 9)
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 (fi g. 1A)
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.

Changing or Installing a New Saw Blade

REMOVING THE BLADE (FIG. 10A–10D)
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.
• Never depress the spindle lock button while the blade is
under power or coasting.
• Do not cut light alloy and ferrous metal (containing iron or
steel) or masonry or fibre cement product with this mitre
saw.
• Depress the head up-lock release lever (b) to release
the lower guard (a), then raise the lower guard as far as
possible.
1. Unplug the saw.
2. Raise the arm to the upper position and raise the lower guard (a) as
far as possible.
3. Depress the spindle lock button (qq) while carefully rotating the saw
blade by hand until the lock engages.
4. Keeping the button depressed, use the other hand and the wrench
provided (cc) to loosen the blade screw. (Turn clockwise, left-hand
threads.)
5. Remove the blade screw (pp), outer clamp washer (rr) and blade
(ss). The inner clamp washer (tt) may be left on the spindle.
INSTALLING A BLADE (FIG. 10A–10D)
1. Unplug the saw.
2. With the arm raised and the lower guard held open, place the
blade on the spindle, and seat it on the inner blade clamp with the
teeth at the bottom of the blade pointing toward the back of the
saw.
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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).
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.: DT4260 is suggested.
Transporting the Saw (fi g. 1A, 1B)
WARNING: To reduce the risk of serious personal
injury, ALWAYS lock the rail lock knob, mitre lock handle,
bevel lock handle, lock down pin and fence adjustment
knobs before transporting saw. Never use guards for
transporting or lift up.
In order to conveniently carry the mitre saw, a carrying handle (d) has
been included on the top of the saw arm.
• To transport the saw, lower the head and depress the lock down
pin (l).
• Lock the rail lock knob with the saw head in the front position,
lock the mitre arm in the full left mitre angle, slide the fence (n)
completely inward and lock the bevel lock knob (ee) with the
saw head in the vertical position to make the tool as compact as
possible.
• Always use the carrying handle (d) or the hand indentations (p).

Features and Controls

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.
MITRE CONTROL (FIG. 11)
The mitre lock handle (u) and mitre latch button (v) allow you to mitre
your saw to 60° right and 50° left. To mitre the saw, lift the mitre lock
handle, push the mitre latch button and set the mitre angle desired on
the mitre scale (s). Push down on the mitre lock handle to lock the mitre
angle.
BEVEL LOCK KNOB (FIG. 1B)
The bevel lock allows you to bevel the saw 49° left or right. To adjust
the bevel setting, turn the knob (ee) counterclockwise. The saw head
bevels easily to the left or to the right once the 0° bevel override knob is
pulled. To tighten, turn the bevel lock knob clockwise.
0° BEVEL OVERRIDE (FIG. 1B)
The bevel stop override (ff) allows you to bevel the saw to the right past
the 0° mark.
When engaged, the saw will automatically stop at 0° when brought up
from the left. To temporarily move past 0° to the right, pull the bevel lock
knob (ee). Once the knob is released, the override will be reengaged.
The bevel lock knob can be locked out by twisting the knob 180°.
When at 0°, the override locks in place. To operate the override, bevel
the saw slightly to the left.
45° BEVEL STOP OVERRIDE (FIG. 12)
There are two bevel stop override levers, one on each side of the saw.
To bevel the saw, left or right, past 45°, push the 45° bevel override
lever (a1) rearward. When in the rearward position, the saw can bevel
past these stops. When the 45° stops are needed, pull the 45° bevel
override lever forward.
CROWN BEVEL PAWLS (FIG. 12)
When cutting crown molding laying flat, your saw is equipped
to accurately and rapidly set a crown stop, left or right (refer to
Instructions for Cutting Crown Molding Laying Flat and Using
the Compound Features). The crown bevel pawl (a3) can be rotated
to contact the crown adjustment screw.
To reverse the crown bevel pawl, remove the retaining screw, the 22.5°
bevel pawl (a2) and the 30° crown bevel pawl (a3). Flip the crown bevel
pawl (a3) so the 33.86° text 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.