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Unpacking Your Saw
Check the contents of your miter saw carton to make sure that you have received all parts. In
addition to this instruction manual, the carton should contain:
1 DHS790 miter saw
1 Base extension (right)
1 Base extension (left)
May include:
1 D
WALT Corded power supply (excluding N version)
e
2 60V batteries (excluding N version)
1 Dual port charger (excluding N version)
In bag:
1 Blade wrench
2 Clamps
2 Lock washers
2 Wing nuts
1 Material clamp
1 Dustbag
1 Instruction manual
Intended Use
This miter saw is designed for professional sawing applications.
DO nOT use under wet conditions or in presence of flammable liquids or gases.
This miter saw is a professional power tool. DO nOT let children come into contact with the tool.
Supervision is required when inexperienced operators use this tool.
Familiarization (Fig. A, E)
Your miter saw is not fully assembled in the carton. Refer to the Assembly section for assembly
instructions. Open the box and lift the saw out by the convenient lifting handle
Figure E. Place the saw on a smooth, flat surface such as a workbench, strong table or D
miter saw stand. Examine Figure A 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.
Fig. E
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 handle
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is pulled down which could cause pinching.The handle is placed close to the guard for
special cuts.
Press down lightly on the operating handle
the downward pressure and hold the arm 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
hand indentations
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to transport the saw.
Transporting the Saw (Fig. A, H)
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.
WARNING: To reduce the risk of serious personal injury, ALWAYS lock the rail lock
knob
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, miter lock lever
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, bevel lock knob
adjustment knobs (
, Fig. H) before transporting saw.
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In order to conveniently carry the miter saw from place to place, a lifting handle
included on the top of the saw arm and hand indentations
To transport the saw, lower the arm of the saw and press in the lock down pin
the arm.
Head 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 head down, push the lock down pin
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.
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18
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and pull out the lock down pin
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. Gently release
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, lock down pin
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and fence
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in the base.
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to secure
ASSEMBLY
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.
nOTE: Your miter 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 steps
below to adjust your saw.
Once made, these adjustments should remain accurate. Take a little time now to follow these
directions carefully to maintain the accuracy of which your saw is capable.
Assembling the Base Extensions (Fig. F)
WARNING: Base extensions must be assembled to both sides of the saw's base before using
the saw.
1. Locate the preassembled threaded stud
2. The extension
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U-shaped supports.
3. Clamp the extension's rods against the miter saw base by inserting the clamp
threaded stud, followed by the washer
extension is secure by pulling on the extension to verify no movement.
4. Repeat steps 1 through 3 on the other side.
Fig. F
, as shown in
WALT
e
13
Bench Mounting (Fig. A)
Mounting holes
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are provided in all 4 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 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
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or the
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.
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. An accidental
has been
start-up can cause injury.
Use of CUTLINE™ LED Worklight (Fig. A)
CAUTION: Do not stare into worklight. Serious eye injury could result.
The CUTLINE™ LED Worklight can be turned on by the momentary switch
automatically turn off within 20 seconds if the saw is not in use. The light is also activated
automatically every time the tool's main trigger
in
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To cut through an existing pencil line on a piece of wood, turn on the CUTLINE™ worklight
using the momentary switch
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underneath the saw's base.
should be oriented as shown in the illustration, sliding fully rearward in the
, and tightening the wing nut
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58
2
is pulled.
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(not with the main trigger), then pull down on the operating
English
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over the
. Ensure the
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57
19
. The light will
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