DeWalt DWS780 Instruction Manual page 8

English

WARNING:
• The guard bracket must be returned to its original position and the screw
tightened before activating the saw.
• Failure to do so may allow the guard to contact the spinning saw blade resulting
in damage to the saw and severe personal injury.
Miter Scale Adjustment (Fig. A, G)
Unlock the miter lock handle and swing the miter arm until the miter latch button
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the 0° miter position. Do not lock the miter lock handle. 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.) If the saw blade is not exactly perpendicular to the fence
four miter scale screws 8 that hold the miter scale and move the miter lock handle and the scale
left or right until the blade is perpendicular to the fence, as measured with the square. Retighten
the four screws. Pay no attention to the reading of the miter pointer at this time.
Fig. G
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Miter Pointer Adjustment (Fig. A)
Unlock the miter lock handle 5 to move the miter arm to the zero position. With the miter lock
handle unlocked, allow the miter latch to snap into place as you rotate the miter arm to zero.
Observe the miter pointer and miter scale
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indicate exactly zero, loosen the miter pointer screw
the pointer and tighten the screw.
Bevel Square to Table (Fig. A, H, I)
To align the blade square to the
Fig. H
table 16 , lock the arm in the
down position with the lock
17
down pin 17 . Place a square
against the blade, ensuring
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the square is not on top of a
tooth. Loosen the bevel lock
knob and ensure the arm is
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firmly against the 0° bevel stop.
Rotate the 0° bevel adjustment
screw 41 with the 1/2" blade
wrench as necessary so that the
blade is at 0° bevel to the table.
Fig. I
43
42
45
49
46
50
44
6
6
10
6
shown in Figure A. If the pointer does not
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holding the pointer in place, reposition
26
41
Bevel Pointer (Fig. I)
If the bevel pointer does not indicate zero, loosen the screw
42
move the pointer as necessary. Ensure the 0° bevel is correct and the bevel pointers are set before
adjusting any other bevel angle screws.
Adjusting the Bevel Stop to 45° Left or Right (Fig. A, I)
To adjust the right 45° bevel angle, loosen the bevel lock knob
locks it at
to override the 0° bevel stop. When the saw is fully to the right, if the bevel pointer does not
indicate exactly 45°, turn the left 45° bevel adjustment screw
until the bevel pointer indicates 45°.
, loosen the
To adjust the left 45° bevel stop, first loosen the bevel lock knob and tilt the head to the left. If the
bevel pointer does not indicate exactly 45°, turn the right 45° bevel adjustment screw
the bevel pointer 42 reads 45°.
Adjusting the Bevel Stop to 22.5° (or 33.9°)
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
knob and tilt the head fully to the left. If the bevel pointer does not indicate exactly 22.5°,
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turn the crown adjustment screw
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 to override the 0° bevel stop. When the saw is fully to the
right, if the bevel pointer does not indicate exactly 22.5°, turn the crown adjustment screw
contacting the pawl with a 7/16" wrench until the bevel pointer indicates exactly 22.5°.
5
Fence Adjustment (Fig. A)
In order that the saw can bevel to many bevel positions, one of the fences may have to be
adjusted to provide clearance. To adjust each fence, loosen the fence adjustment knob
and slide the fence outward. Make a dry run with the saw turned off and check for clearance.
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. Tighten the fence adjustment knob
securely. When the bevel operations are complete, don't forget to relocate the fence.
For certain cuts, it may be desirable to bring the fences closer to the blade. To use this feature,
back the fence adjustment knobs out two turns and move the fences closer to the blade past the
normal limit, then tighten the fence adjustment knobs to keep the fences in this location. When
using this feature, make a dry cut first to ensure the blade does not contact the fences.
nOTE: The tracks of the fences can become clogged with sawdust. If you notice that they are
becoming clogged, use a brush or some low pressure air to clear the guide grooves.
Guard Actuation and Visibility (Fig. A, Z)

CAUTION: Pinch Hazard. To reduce the risk of injury, keep thumb underneath the handle
when pulling the handle down. The lower guard will move up as the handle is pulled down
which could cause pinching.
The lower guard 4 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.
nOTE: Certain special cuts of large material will require that you manually raise the guard. Refer
to Cutting large Material under Special Cuts.
The front section of the guard is louvered for visibility while cutting. Although the louvers
dramatically reduce flying debris, they are openings in the guard and safety glasses should be
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worn at all times when viewing through the louvers.
Rail Guide Adjustment (Fig. A)
Periodically check the rails
rail set screw adjustment
and rotate the rail set screw clockwise gradually while sliding the saw head back and forth.
Reduce play while maintaining minimum slide force.
Miter Lock Adjustment (Fig. A, J)
The miter lock rod 47 should be adjusted if the table of the saw can be moved when the
miter lock handle 5 is locked (down). To adjust the miter lock, put the miter lock handle in the
unlocked (up) position. Using a 1/2" open end wrench, loosen the lock nut
rod. Using a slotted screwdriver, tighten the miter lock rod by turning it clockwise. Turn the lock
rod until it is snug, then turn counterclockwise one turn. To ensure the miter lock is functioning
properly, re-lock the miter lock to a non-detented measurement on the miter scale – for example,
34º – and make sure the table will not rotate. Tighten lock nut.
Fig. J
48
47
43
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44 with the 1/2" blade wrench
(Fig. A, I)
contacting the pawl with a 7/16" wrench until the
45
23 for any play or clearance. The right rail can be adjusted with the
31 shown in Figure A. To reduce clearance, use a 4 mm hex wrench
that holds it in place and
and pull the 0° bevel stop
44 until
46 . Loosen the bevel lock
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48 on the miter lock