DeWalt DHS790 - Body and Hand Position (Fig. W, X); Through-Cutting Operations; Crosscuts (Fig. A, Y)

12
ENGLISH
Fig. U
Fig. T
60
56
55
Trigger Switch (Fig.V)
To turn the saw on, push the lock-off button
3
to the left, then depress the trigger switch
2
.
The saw will run while the switch is depressed. Allow the blade to spin up to full operating speed
before making the cut. To turn the saw off, release the switch. Allow the blade to stop before
raising the saw head. There is no provision for locking the switch on. A hole
45
is provided in the
trigger for insertion of a padlock to lock the switchoff.
Always be sure the blade has stopped before removing it from thekerf.
Fig. V
2
45
3
Body and Hand Position (Fig. W, X)
Proper positioning of your body and hands is crucial when operating the miter saw. Never place
hands inside the cutting area between the two red lines on the base while the blade is turning.
Clamp or hold the workpiece tightly to the table and the fence when cutting. Keep both 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X.
Keep both feet firmly on the floor and maintain proper balance. As you move the miter arm
left and right, follow it and stand slightly to the side of the saw blade. Sight through the guard
louvers when following a pencilline.
Through-Cutting Operations

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.
If the slide feature is not used, ensure the saw head is pushed back as far as possible and the rail
lock knob (
22
, Fig.A) is tightened. This will prevent the saw from sliding along its rails as the
workpiece isengaged.
NOTE: Although this saw will cut wood and many non-ferrous materials, we will limit our
detailed discussion to the cutting of wood only. The same guidelines apply to the other materials.
DO NOT CUT FERROUS (IRON AND STEEL) MAT ERIALS, MASONRY OR FIBER CEMENT WITH
THIS SAW. Do not use any abrasiveblades.
NOTE: Refer to Guard Actuation and Visibility in the Features and Controls section for
important information about the lower guard beforecutting.
Crosscuts (Fig. A, Y)
A crosscut is made by cutting wood across the grain at any angle. A straight crosscut is made
with the miter arm at the zero degree position. Set and lock the miter arm at zero, hold the wood
firmly on the table and against the fence. With the rail lock knob
22
tightened, turn on the saw
by squeezing the trigger switch shown in FigureA.
When the saw comes up to speed (about 1 second) lower the arm smoothly and slowly to cut
through the wood. Let the blade come to a full stop before raisingarm.
Fig. Y
When cutting anything larger than a 2 x 8 (51 x 203mm [2 x 6 (51 x 152) at 45º miter]) use an
out-down-back motion with the rail lock knob
22
loosened. Pull the saw out, toward you, lower
the saw head down toward the workpiece, and slowly push the saw back to complete the cut.
Do not allow the saw to contact the top of the workpiece while pulling out. The saw may run
toward you, possibly causing personal injury or damage to theworkpiece.
Cutting of multiple pieces is not recommended but can be done safely by ensuring that each
piece is held firmly against the table andfence.
NOTE: To provide greater crosscut capacity with reduced stroke, the blade on the saw extends
deeper into the table. As a result, a greater lifting force on the workpiece may be experienced
during thecut.

CAUTION: Always use a work clamp to maintain control and reduce the risk of workpiece
damage and personal injury, if your hands are required to be within 4" (100 mm) of the blade
during thecut.
NOTE: The rail lock knob
22
shown in FigureA must be loose to allow the saw to slide along
itsrails.
Miter crosscuts are made with the miter arm at some angle other than zero. This angle is often
45º for making corners, but can be set anywhere from zero to 50º left or 60° right. Make the cut as
describedabove.
When performing a miter cut on workpieces wider than a 2 x 6 that are shorter in length, always
place the longer side against thefence.
To cut through an existing pencil line on a piece of wood, match the angle as close as possible.
Cut the wood a little too long and measure from the pencil line to the cut edge to determine
which direction to adjust the miter angle and recut. This will take some practice, but it is a
commonly usedtechnique.
Bevel Cuts
A bevel cut is a crosscut made with the saw blade leaning at an angle to the wood. In order to
set the bevel, loosen the bevel lock (
26
, Fig.A), and move the saw to the left or right as desired.
(It is necessary to move the fence to allow clearance.) Once the desired bevel angle has been set,
tighten the bevel lock firmly. Refer to the Features and Controls section for detailed instructions
on the bevelsystem.
Bevel angles can be set from 49º right to 49º left and can be cut with the miter arm set between
50º left or 60º right. At some extreme angles, the right or left side fence might have to be
removed. To remove the left or right fence, unscrew the fence adjustment knob several turns and
slide the fenceout.
NOTE: Refer to Fence Adjustment in the Adjustments section for important information on
adjusting the fences for certain bevelcuts.
Quality of Cut
The smoothness of any cut depends on a number of variables. Things like material being cut,
blade type, blade sharpness and rate of cut all contribute to the quality of thecut.
When smoothest cuts are desired for molding and other precision work, a sharp (60 tooth
carbide) blade and a slower, even cutting rate will produce the desiredresults.
Ensure that the material does not move or creep while cutting; clamp it securely in place. Always
let the blade come to a full stop before raisingarm.
If small fibers of wood still split out at the rear of the workpiece, stick a piece of masking tape
on the wood where the cut will be made. Saw through the tape and carefully remove tape
whenfinished.
For varied cutting applications, refer to the list of recommended saw blades for your saw and
select the one that best fits your needs. Refer to Saw Blades underAccessories.