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5

ANGLE

MAXIMUM CAPACITY OF CUT

RESULT

0° miter

Height

112 mm (4.4")

Width

231 mm (9.1")

Width

349 mm (13.75")

Height

76 mm (3.0")

45° miter

Height

112 mm (4.4")

Width

147 mm (5.8")

Width

244 mm (9.6")

Height

76 mm (3.0")

45º bevel – left

Height

79 mm (3.1")

Width

290 mm (11.4")

Width

349 mm (13.75")

Height

43 mm (1.7")

45º bevel – right

Height

56 mm (2.2")

Width

290 mm (11.4")

Width

349 mm (13.75")

Height

28 mm (1.1")

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")

Width 409 mm (16.1")

45º miter

Height 38 mm (1.5")

Width 297 mm (11.7")

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),   

FIG. 9

 

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.

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.

PP

FIG. 10B

B

CC

FIG. 10A

A

QQ

  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      

I

FIG. 10C

PP

RR

SS

TT

 

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).

Summary of Contents for DWS780-XE

Page 1: ...DWS780 XE 305 mm 12 DOUBLE BEVEL SLIDING COMPOUND MITER SAW INSTRUCTION MANUAL ...

Page 2: ......

Page 3: ...sly close to the blade within 6 It is safer than using your hand and it frees both hands to operate tool DON T OVERREACH Keep proper footing and balance at all times Loss of balance may cause personal injury MAINTAIN TOOLS WITH CARE Keep tools sharp and clean for best and safest performance Follow instructions for lubricating and changing accessories Poorly maintained tools and machines can furthe...

Page 4: ...THIS PLATE WHEN DAMAGED Small chip accumulation under the saw may interfere with the saw blade or may cause instability of workpiece when cutting USE ONLY BLADE CLAMPS specified for this tool to prevent damage to the machine and or serious injury CLEAN THE MOTOR AIR SLOTS of chips and sawdust Clogged motor air slots can cause the machine to overheat damaging the machine and possibly causing a shor...

Page 5: ... supply cord If the supply cord is damaged it must be replaced by the manufacturer or an authorised DEWALT Service Centre in order to avoid a hazard Accessories WARNING Since accessories other than those offered by DEWALT have not been tested with this product use of such accessories with this tool could be hazardous To reduce the risk of injury only DEWALT recommended accessories should be used w...

Page 6: ...e width of the saw OO DW7025 Clamp brackets The clamp brackets are used for mounting the saw to a stand SAW BLADES ALWAYS USE 305 mm 12 SAW BLADES WITH EITHER 1 25 4 mm OR 5 8 15 88 mm ARBOR HOLES SPEED RATING MUST BE AT LEAST 4800 RPM Never use a smaller diameter blade It will not be guarded properly Use crosscut blades only Do not use blades designed for ripping combination blades or blades with...

Page 7: ...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...

Page 8: ...erate 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 Whe...

Page 9: ...e maximum rotation speed of the tool must not exceed that of the saw blade Do not use any abrasive blades 7 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 measurement 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 m...

Page 10: ... table and the fence when cutting Keep hands in position until the trigger has been released and the blade has completely stopped ALWAYS MAKE DRY RUNS UNPOWERED BEFORE FINISH CUTS SO THAT YOU CAN CHECK THE PATH OF THE BLADE DO NOT CROSS HANDS AS SHOWN IN Figure 17B Keep both feet firmly on the floor and maintain proper balance As you move the mitre arm left and right follow it and stand slightly t...

Page 11: ...f the blade during the cut Use the material clamp KK provided with your saw Other aids such as spring clamps bar clamps or C clamps may be appropriate for certain sizes and shapes of material The left or right fence will slide from side to side to aid in clamping TO INSTALL CLAMP 1 Insert it into the hole behind the fence The clamp should be facing toward the back of the mitre saw The groove on th...

Page 12: ... Right side Bevel right 33 9 Mitre table set at left 31 62 Save right end of cut Bevel left 33 9 Mitre table set at right 31 62 Save right end of cut FIG 24A N Q Q N FIG 24B II FIG 25A SS N FIG 25B SS N Set your saw to the prescribed angles and make a few trial cuts Practise fitting the cut pieces together Example To make a 4 sided box with 26º exterior angles Angle A fig 22 use the upper right ar...

Page 13: ...own in figure 26A and never like that shown in figure 26B Positioning the material incorrectly will cause it to pinch the blade CUTTING PLASTIC PIPE OR OTHER ROUND MATERIAL Plastic pipe can be easily cut with your saw It should be cut just like wood and clamped or held firmly to the fence to keep it from rolling This is extremely important when making angle cuts CUTTING LARGE MATERIAL FIG 1 27 Occ...

Page 14: ...s Wear approved eye protection and approved dust mask when performing this procedure WARNING Never use solvents or other harsh chemicals for cleaning the non metallic parts of the tool These chemicals may weaken the materials used in these parts Use a cloth dampened only with water and mild soap Never let any liquid get inside the tool never immerse any part of the tool into a liquid WORKLIGHT CLE...

Page 15: ...COMPOUND MITER CUT POSITION WOOD WITH BROAD FLAT SIDE ON THE TABLE AND THE NARROW EDGE AGAINST THE FENCE SET THIS MITER ANGLE ON SAW ANGLE OF SIDE OF BOX ANGLE A S Q U A R E B O X 6 S I D E D B O X MITER DEGREE SETTING BEVEL DEGREE SETTING SET THIS BEVEL ANGLE ON SAW 8 S I D E D B O X ...

Page 16: ... dewalt com au www dewalt com nz SEP11 Part No N137372 DWS780 XE Copyright 2011 DEWALT The following are trademarks for one or more DEWALT power tools the yellow and black color scheme the D shaped air intake grill the array of pyramids on the handgrip the kit box configuration and the array of lozenge shaped humps on the surface of the tool ...

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