Mitre Pointer Adjustment; Bevel Square To Table Adjustment; Bevel Pointer Adjustment; Adjusting The Bevel Stop To 22.5 (Or 30) - DeWalt DWS780-XE Instruction Manual

305 mm (12") double bevel sliding compound miter saw
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2. Place a square against the saw's fence and blade, as shown. (Do
not touch the tips of the blade teeth with the square. To do so will
cause an inaccurate measure ment.)
3. If the saw blade is not exactly perpendicular to the fence, loosen the
four screws (WW) that hold the mitre scale (S) and move the mitre
lock handle and the scale left or right until the blade is perpendicular
to the fence, as measured with the square.
4. Retighten the four screws. Pay no attention to the reading of the
mitre pointer (UU) at this time.
MITRE POINTER ADJUSTMENT (FIG. 11)
1. Unlock the mitre lock handle (U) to move the mitre arm to the zero
position.
2. With the mitre lock handle unlocked, allow the mitre latch to snap
into place as you rotate the mitre arm to zero.
3. Observe the mitre pointer (UU) and mitre scale (S) shown in
figure 11. If the pointer does not indicate exactly zero, loosen the
mitre pointer screw (V V) holding the pointer in place, reposition the
pointer and tighten the screw.
BEVEL SQUARE TO TABLE ADJUSTMENT (FIG. 1, 12, 15)
1. To align the blade square to the table, lock the arm in the down
position with the lock down pin (L).
2. Place a square against the blade, ensuring the square is not on top
of a tooth.
3. Loosen the bevel lock knob (EE) and ensure the arm is firmly against
the 0° bevel stop.
4. Rotate the 0° bevel adjustment screw (A5) with the 13 mm (1/2")
blade wrench (CC) as necessary so that the blade is at 0° bevel to
the table.
BEVEL POINTER ADJUSTMENT (FIG. 12)
If the bevel pointers (YY) do not indicate zero, loosen each screw (XX)
that holds each bevel pointer in place and move them as necessary.
Ensure the 0° bevel is correct and the bevel pointers are set before
adjusting any other bevel angle screws.
BEVEL STOP 45º RIGHT AND LEFT ADJUSTMENT (FIG. 1, 12)
To adjust the right 45° bevel stop:
1. Loosen the bevel lock knob (EE) and pull the 0° bevel stop (FF) to
override the 0° bevel stop.
2. When the saw is fully to the right, if the bevel pointer (YY) does not
indicate exactly 45°, turn the left 45° bevel adjustment screw (A4)
with the 13 mm (1/2") blade wrench (CC) until the bevel pointer
indicates 45°.
To adjust the left 45° bevel stop:
1. Loosen the bevel lock knob and tilt the head to the left.
2. If the bevel pointer does not indicate exactly 45°, turn the right 45°
bevel adjustment screw until the bevel pointer reads 45°.
ADJUSTING THE BEVEL STOP TO 22.5° (OR 30°) (FIG. 2, 12)
NOTE: Adjust the bevel angles only after performing the 0° bevel angle
and bevel pointer adjustment.
To set the left 22.5° bevel angle, flip out the left 22.5° bevel pawl (A2).
Loosen the bevel lock knob (EE) and tilt the head fully to the left. If
the bevel pointer (YY) does not indicate exactly 22.5°, turn the crown
adjustment screw (ZZ) contacting the pawl with a 10 mm (7/16") wrench
until the bevel pointer reads 22.5°.
To adjust the right 22.5° bevel angle, flip out the right 22.5° bevel pawl.
Loosen the bevel lock knob and pull the 0° bevel stop (FF) to override the
0° bevel stop. When the saw is fully to the right, if the bevel pointer does
FIG. 14
FIG. 15
FIG. 16
A7
A8
7
7
not indicate exactly 22.5°, turn the crown adjustment screw contacting
the pawl with a 10 mm (7/16") wrench until the bevel pointer indicates
exactly 22.5°.
FENCE ADJUSTMENT (FIG. 1)
The upper part of the fence can be adjusted to provide clearance,
allowing the saw to bevel to a full 49° both left and right.
1. To adjust each fence (N), loosen the fence adjustment knob (M) and
slide the fence outward.
2. Make a dry run with the saw turned off and check for clearance.
3. Adjust the fence to be as close to the blade as practical to provide
max imum workpiece support, without interfering with arm up and
down movement.
4. Tighten the fence adjustment knob securely.
5. When the bevel operations are complete, relocate the fence.
For certain cuts, it may be desirable to bring the fences closer to the
blade. To do so, back the fence adjustment knobs (M) out two turns and
move the fences closer to the blade past the normal limit, then tighten the
fence adjustment knobs. Make a dry cut first to ensure the blade does not
U
contact the fences.
NOTE: The tracks of the fences can become clogged with sawdust. Use a
brush or some low pressure air to clear the guide grooves.
GUARD ACTUATION AND VISIBILITY (FIG. 1)
The lower guard (A) on your saw has been designed to automatically
uncover the blade when the arm is brought down and to cover the blade
when the arm is raised.
The guard can be raised by hand when installing or removing saw
blades or for inspection of the saw. NEVER RAISE THE LOWER GUARD
MANUALLY UN LESS THE BLADE IS STOPPED.
KERF PLATE ADJUSTMENT (FIG. 1)
To adjust the kerf plates (W), loosen the screws holding the kerf plates
in place. Adjust so that the kerf plates are as close as possible without
interfering with the blade's movement.
If a zero kerf width is desired, adjust the kerf plates as close to each
other as possible. They can now be cut slowly with the saw blade to give
the smallest gap possible between the blade and the kerf plates.
RAIL GUIDE ADJUSTMENT (FIG. 1)
Regularly check the rails (J) for play or clearance.
The right rail can be adjusted with the set screw (H). To reduce clearance,
U
use a 4 mm hex wrench and rotate the set screw clockwise gradually
while sliding the saw head back and forth.
MITRE LOCK ADJUSTMENT (FIG. 1, 16)
The mitre lock rod (A7) should be adjusted if the table of the saw can be
moved when the mitre lock handle is locked (down).
1. Put the mitre lock handle (U) in the unlocked (up) position.
2. Using a 13 mm (1/2") open end wrench, loosen the lock nut (A8) on
the mitre lock rod.
3. Using a slotted screwdriver, tighten the mitre lock rod by turning it
clockwise as shown in figure 16. Turn the lock rod until it is snug,
then turn counterclockwise one turn.
4. Re-lock the mitre lock to a non-detented measurement on the mitre
scale – for example, 34º – and make sure the table will not rotate.
5. Tighten lock nut.
Prior to Operation
• 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. Do not use any abrasive blades.

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