DeWalt DWS780 instruction manual Features and Controls

FIG. 4			LIFTING
RAIL LOCK
			HANDLE
KNOB
				OPERATING
			MOTOR
				HANDLE
			HOUSING
RAIL SET
SCREW		MOTOR		LOWER
ADJUSTMENT				GUARD
		ENDCAP
RAILS				KERF
				PLATE
BEVEL SCALE
LOCK DOWN				MITER
PIN				LATCH
				BUTTON
FENCE			DUST DUCT	MITER LATCH
ADJUSTMENT			INLET
KNOB				OVERRIDE
(one each side)			MITER
		TABLE	SCALE
	HAND			MITER LOCK
	INDENTATION		BENCH MOUNTING HOLES	HANDLE
FENCE
			TRIGGER
			SWITCH
XPSTM ON/OFF
DEPTH	SWITCH
ADJUSTMENT
SCREW				BELT COVER
WING NUT
DEPTH STOP
				0° BEVEL
FENCE				STOP
ADJUSTMENT
KNOB
(one each side)
				BEVEL LOCK
BLADE WRENCH			BASE	KNOB

FIG. 5		MITER POINTER SCREW
			MITER
			LATCH
			BUTTON
SCREW		MITER
(4 places)	MITER	POINTER
	SCALE	MITER LATCH
			MITER LOCK
		OVERRIDE
			HANDLE

FIG. 6

BEVEL POINTER SCREW

(one each side)

BEVEL POINTER

(one each side)

BEVEL SCALE

CROWN ADJUSTMENT SCREW

(one each side)

45° BEVEL OVERRIDE LEVER

(one each side)

22.5º BEVEL PAWL

(one each side)

CROWN BEVEL PAWL

(one each side)

45° BEVEL
ADJUSTMENT SCREW	0° BEVEL ADJUSTMENT
(one each side)
	SCREW

NOTE: Your saw is capable of cutting the following once a special setup procedure is followed. Refer to Special Cuts.

0° miter	Height 1.5" (38 mm)	Width 16.1" (409 mm)
45º miter	Height 1.5" (38 mm)	Width 11.7" (297 mm)

Familiarization

Your miter saw is fully assembled in the carton. Open the box and lift the saw out by the convenient lifting handle, as shown in Figure 2.

Place the saw on a smooth, flat surface such as a workbench or strong table.

Examine Figure 4 to become familiar with the saw and its various parts. The section on adjustments will refer to these terms and you must know what and where the parts are.

CAUTION: Pinch hazard. To reduce the risk of injury, keep thumb underneath the operating handle when pulling the handle down. The lower guard will move up as the operating handle is pulled down, which could cause pinching. The operating handle is placed close to the guard for special cuts.

Press down lightly on the operating handle and pull out the lock down pin. Gently release the downward pressure and hold the operating handle, allowing it to rise to its full height. Use the lock down pin when carrying the saw from one place to another. Always use the lifting handle to transport the saw, or use the hand indentations shown in Figure 4.

Bench Mounting

Holes are provided in all 4 feet to facilitate bench mounting, as shown in Figure 4. (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 1/2" (12.7 mm) 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.

IMPORTANT SAFETY INSTRUCTIONS

Changing or Installing a New Saw Blade (Fig. 3)

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.

Removing the Blade (Fig. 3)

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 (E). Lower guard will remain raised due to the position of the guard bracket screw.

4.Depress the spindle lock button (C) 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 (D) to loosen the blade screw. (Turn clockwise, left-hand threads.)

6.Remove the blade screw (E), outer clamp washer (F), blade (G) and blade adapter (H), if used. The inner clamp washer (I) may be left on the spindle.

NOTE: For blades with a blade hole of 5/8" (15.88 mm), the 1" (25.4 mm) blade adapter (H) is not used.

Installing a Blade (Fig. 3)

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).

NOTE: When using blades with a 5/8" (15.88 mm) diameter blade hole, the blade adapter will not be used and should be stored in a safe place for future use. The separate blade adapter is not available on all models.

5.Return the guard bracket to its original position and firmly tighten the guard bracket screw to hold bracket in place.

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.

Transporting the Saw

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.

WARNING: To reduce the risk of serious personal injury, ALWAYS lock the rail lock knob, miter lock handle, bevel lock handle, lock down pin and fence adjustment knobs before transporting saw.

In order to conveniently carry the miter saw from place to place, a lifting handle has been included on the top of the saw arm and hand indentations in the base, as shown in Figure 4.

FEATURES AND CONTROLS

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.

MITER CONTROL (FIG. 5)

The miter lock handle and miter latch button allow you to miter your saw to 60° right and 50° left. To miter the saw, lift the miter lock handle, push the miter latch button and set the miter angle desired on the miter scale. Push down on the miter lock handle to lock the miter angle.

TRIGGER SWITCH (FIG. 4)

The trigger switch turns your saw on and off. A hole is provided in the trigger for insertion of a padlock to secure the saw.

MITER LATCH OVERRIDE (FIG. 5)

The miter latch override allows your saw to override the common stop angles. To override the common stop angles, push the miter latch button and flip the miter latch override lever to the vertical position.

BEVEL LOCK KNOB (FIG. 4)

The bevel lock allows you to bevel the saw 49° left or right. To adjust the bevel setting, turn the knob 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. 4)

The bevel stop override allows you to bevel the saw to the right past the 0° mark.

FIG. 7

FIG. 8

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. 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. 6)

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 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. 6)

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 can be rotated to contact the crown adjustment screw. The saw is factory set to be used for typical crown in North America (52/38), but can be reversed to cut non-typical (45/45) crown. To reverse the crown bevel pawl, remove the retaining screw, the 22.5° bevel pawl and the 33.86° crown bevel pawl. Flip the crown bevel pawl so the 30° 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.