DeWalt DHS780 Original Instructions Manual page 38

EnGLISH
5. With the tool turned off, plug the corded power supply into a standard 230 V household
electric power outlet. UK 115V units should be plugged into a 115V transformer. Do not
attempt to use the corded power supply on any other voltage.
6. Use the tool according to the tool instructions, making sure the cord is located so that it
will not be stepped on, tripped over, or otherwise subjected to damage or stress.
7. To remove the corded power supply from the tool, first unplug the corded power supply
from the outlet, then press the release button
out of the tool. Firmly press the end of the dust cover
supply receptacle 37 .
Changing or Installing a New Saw Blade
Removing the Blade (Fig. A, G1–G4)

WARNING: To reduce the risk of serious personal injury, turn tool off and remove
the battery packs or power supply before transporting, making any adjustments,
cleaning, repairing, or removing/installing attachments or accessories. 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.
DHS780 (FIG. G1, G2a, G3, G4)
1. Disconnect the saw from the power supply or remove batteries.
2. Depress the head up-lock release lever
lower guard as far as possible.
3. Depress the spindle lock button 48 while carefully rotating the saw blade by hand until
the lock engages.
4. Keeping the button depressed, use the other hand and the wrench
the blade screw. (Turn clockwise, left-hand threads.)
5. Remove the blade screw 43 , outer clamp washer
inner clamp washer 47 may be left on the spindle.
DHS780-XE OnLY (FIG. G1, G2b, G4)
1. Disconnect the saw from the power supply or remove batteries.
2. Depress the head up-lock release lever
lower guard as far as possible.
3. Loosen, but do not remove guard bracket screw
raised far enough to access the blade screw
position of the guard bracket screw.
4. Depress the spindle lock button 48 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
the blade screw 43 . (Turn clockwise, left-hand threads.)
6. Remove the blade screw 43 , outer clamp washer
inner clamp washer may be left on the spindle.
47
nOTE: For blades with a blade hole of 15.88 mm, the 25.4 mm blade adapter is not used.
Installing a Blade (Fig. A, G1–G4)
1. Disconnect the saw from the power supply or remove batteries.
2. With the arm raised and the lower guard held open, place the adapter and 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.
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. DSH780-XE OnLY, GIG G2b: Return the guard bracket
firmly tighten the guard bracket screw

WARNING: The guard bracket must be returned to its original position and the
guard bracket 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.

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 (Fig. A)

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
top of the saw arm.
• To transport the saw, lower the head and depress the lock down pin
• 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
lock knob 28 with the saw head in the vertical position to make the tool as compact
as possible.
• Always use the carrying handle or the hand indentations
4
Features and Controls

WARNING: To reduce the risk of serious personal injury, turn tool off and remove
the battery packs or power supply before transporting, making any adjustments,
cleaning, repairing, or removing/installing attachments or accessories. Be sure
the trigger switch is in the OFF position. An accidental start-up can cause injury.
36
and firmly pull the corded power supply
38
39 into the tool's corded power
2 to release the lower guard 1 , then raise the
provided to loosen
27
44 , adapter 45 and blade 46
2 to release the lower guard 1 , then raise the
67 until the guard bracket 68 can be
43 . Lower guard will remain raised due to the
27
44 , adapter 45 and blade 46
68 to its original position and
67 to hold bracket in place.
4 has been included on the
19 .
16 completely inward and lock the bevel
.
15
Mitre Control (Fig. H)
The mitre lock handle 8 and mitre release button
and 50° left. To mitre the saw, lift the mitre lock handle, push the mitre release button and set
the mitre angle desired on the mitre scale
mitre angle.
Bevel Lock Knob (Fig. A)
The bevel lock allows you to bevel the saw 49° left or right. To adjust the bevel setting, turn
the knob 28 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. A)
The bevel stop override 30
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
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. I)
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
the saw can bevel past these stops. When the 45° stops are needed, pull the 45° bevel override
lever forward.
Crown Bevel Pawls (Fig. I)
nOTE: Crown bevel cuts can be made using hard stops for a fast and accurate setting at 30°
and 33.9°.
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
. The
Using the Compound Features).
The 30° crown bevel pawl 54
To reverse the 30° crown bevel pawl to 33.9°, remove the retaining screw
pawl 53 and the 30° crown bevel pawl
text is facing up. Reattach the retaining screw
crown bevel pawl. The accuracy setting will not be affected.
22.5° Bevel Pawls (Fig. I)
Your saw is equipped to rapidly and accurately set a 22.5° bevel, left or right. The 22.5° bevel
pawl 53 can be rotated to contact the crown adjustment screw
Rail Lock Knob (Fig. A)
to loosen
The rail lock knob 24 allows you to lock the saw head firmly to keep it from sliding on the
rails 23 . This is necessary when making certain cuts or when transporting the saw.
. The
Grooving Stop (Fig. A)
The grooving stop 35 allows the depth of cut of the blade to be limited. The stop is useful
for applications such as grooving and tall vertical cuts. Rotate the grooving stop forward
and adjust the depth adjustment screw
adjustment, tighten the wing nut
bypass the grooving stop feature. If the depth adjustment screw is too tight to loosen by hand,
the provided wrench 27 can be used to loosen the screw.
Lock Down Pin (Fig. A)

WARNING: The lock down pin should be used only when carrying or storing the saw.
NEVER use the lock down pin for any cutting operation.
To lock the saw head in the down position, push the saw head down, push the lock down
pin 19 in and release the saw head. This will hold the saw head safely down for moving the
saw from place to place. To release, press the saw head down and pull the pin out.
Adjustment
Your mitre saw is fully and accurately adjusted at the factory at the time of manufacture.
If readjustment due to shipping and handling or any other reason is required, follow the
instructions below to adjust your saw. Once made, these adjustments should remain accurate.
Mitre Scale Adjustment (Fig. H, L)
1. Unlock the mitre lock handle
locks it at the 0° mitre position. Do not lock the mitre lock handle.
2. Place a square against the saw's fence and blade, as shown in Figure L. (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
hold the mitre scale 13
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
this time.
Mitre Pointer Adjustment (Fig. H)
1. Unlock the mitre lock handle
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
not indicate exactly zero, loosen the mitre pointer screw
reposition the pointer and tighten the screw.
9 allow you to mitre your saw to 60° right
13 . Push down on the mitre lock handle to lock the
allows you to bevel the saw to the right past the 0° mark.
28 . Once the knob is released,
52 rearward. When in the rearward position,
can be rotated to contact the crown adjustment screw
54 . Flip the 30° crown bevel pawl
56 to secure the 22.5° bevel pawl and the 33.9°
51 .
34 to set the desired depth of cut. To secure the
33 . Rotating the grooving stop to the rear of the saw will
8 and swing the mitre arm until the mitre release button
and move the mitre lock handle and the scale left or right until
8 to move the mitre arm to the zero position.
12 and mitre scale 13 shown in Figure H. If the pointer does
holding the pointer in place,
49
51 .
56 , the 22.5° bevel
54 so the 33.9°
9
14 that
at
12