DeWalt DHS790 - Installing a Blade (Fig. L-N); Miter Scale and Pointer Adjustment; Miter Lock Adjustment (Fig. G, P)

9
ENGLISH
If the condition persists, there may be a fault condition. Have the tool serviced by an authorized
DeWALT servicecenter.
Always be sure the blade has stopped before raising the arm and removing the blade from the
kerf plate. The brake is not a substitute for guards. Ensure your own safety by giving the saw your
completeattention.
Guard Actuation and Visibility

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 blade guard on your saw has been designed to automatically raise when the arm is brought
down and to lower over 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 BLADE GUARD MANUALLY UN LESS THE SAW IS TURNEDOFF.
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
worn at all times when viewing through thelouvers.
ADJUSTMENTS

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. An accidental
start-up can causeinjury.
Changing or Installing a New Saw Blade (Fig.A, L–N)

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.
• Do not use abrasive wheels orblades.
Removing the Blade (Fig.L, M)
1. Remove the battery packs or powersupply.
2. Raise the arm to the upper position and raise the lower guard
4
as far aspossible.
3. Loosen, but do not remove guard bracket screw
43
until the guard bracket
42
can be raised
far enough to access the blade screw
44
(with integral washer). Lower guard will remain
raised due to the position of the guard bracketscrew.
4. Depress the spindle lock button
45
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
25
to loosen
the blade screw
44
. (Turn clockwise, left-hand threads.)
6. Remove the blade screw
44
, outer blade washer
46
and blade
47
. The inner blade
washer
48
, and if used, the 1" (25.4mm) blade adapter, 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is
notused.
Installing a Blade (Fig.L–N)
1. Remove the battery packs or powersupply.
2. With the arm raised, the lower guard
4
held open and the guard bracket
42
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
44
(with integral washer) and, engaging the spindle lock, tighten the
screw firmly with wrench
25
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
42
to its original position and firmly tighten the guard bracket
screw
43
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.
25
4
43
44
42
Fig. L
45
Fig. M
Fig. N
46 47
48
44
Miter Scale Adjustment (Fig.G, O)
Unlock the miter lock lever
6
, press the miter release button
7
and swing the miter arm until
it locks at the 0° miter position. Do not lock the miter lock lever. Place a square against the saw’s
fence and blade, as shown in FigureO. (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, loosen the four screws
12
that hold the miter scale
11
and move the miter lock
lever
6
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.