Blade Descriptions - DeWalt DHS790 Manual De Instrucciones

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Cutting Large Material (Fig. JJ)
Occasionally you will encounter a piece of wood a little too large to fit beneath the lower guard.
If this occurs, simply place your right thumb on the upper side of the guard and roll the guard up
just enough to clear the workpiece, as shown in Figure JJ. Avoid doing this as much as possible,
but if need be, the saw will operate properly and make the bigger cut. NEVER TIE, TAPE, OR
OTHERWISE HOLD THE GUARD OPEN WHEN OPERATING THIS SAW.
Fig. JJ
MAINTENANCE

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, DO NOT touch the sharp
points on the blade with fingers or hands while performing any maintenance.
DO NOT use lubricants or cleaners (particularly spray or aerosol) in the vicinity of the plastic
guard. The polycarbonate material used in the guard is subject to attack by certain chemicals.
All bearings are sealed. They are lubricated for life and need no further maintenance.
Periodically clean all dust and wood chips from around AND UNDER the base and the
rotary table. Even though slots are provided to allow debris to pass through, some dust
will accumulate.
Removing and Replacing Belt (Fig. A, KK)
The belt is designed to last the life of the tool. However, abuse of the tool could cause the belt
to fail.
If the blade does not turn when the motor is running, the belt has failed. To inspect or replace
the belt, remove the belt cover screws. Remove the belt cover. Inspect the ribs of the belt for
wear or failure. Check belt tension by squeezing the belt. The belt halves should almost touch
when squeezing firmly with the thumb and index finger. To adjust the tension, loosen, but do not
remove, the four crosshead screws 
 62 
. Then rotate the set screw 
plate casting until the proper tension is achieved. Tighten the four screws securely and replace
the belt cover.
NOTICE: Overtightening the belt will cause premature motor failure.
Fig. KK
Cleaning

WARNING: Blow dirt and dust out of all air vents and guard mechanisms (if applicable) with
clean, dry air at least once a week. To minimize the risk of eye injury, always wear ANSI Z87.1
approved eye protection and respiratory protection 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 plastic 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.
Cleaning the D
WALT Corded Power Supply
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WARNING: Never use solvents or other harsh chemicals for cleaning the non-metallic parts
of the tool. These chemicals may weaken the plastic materials used in these parts. Use a
 63 
on the top of the motor
62
63
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.
Cleaning the Corded Power Supply Receptacle (Fig. S)

WARNING: Blow debris out of the corded power supply receptacle 
To minimize the risk of eye injury, always wear ANSI Z87.1 approved eye protection and
respiratory protection when performing this.
Dust Duct Cleaning
Depending on your cutting environment, saw dust can clog the dust duct and may prevent dust
from flowing away from the cutting area properly. With the battery pack or corded power supply
removed and the saw head raised fully, low pressure air or a large diameter dowel rod can be
used to clear the dust out of the dust duct.
CUTLINE™ LED Worklight Cleaning
For the best worklight performance, perform the following maintenance regularly with the
battery or corded power supply removed.
Carefully clean sawdust and debris from worklight lens with a cotton swab.
DO NOT use solvents of any kind, they may damage the lens.
Dust build-up can block the worklight and prevent it from accurately indicating the line
of cut.
Follow miter saw's instruction manual to remove and install blade.
With blade removed from saw, clean pitch and build-up from blade. Pitch and debris can
interfere with the worklight and prevent it from accurately indicating the line of cut.
Accessories

WARNING: Since accessories, other than those offered by D
with this product, use of such accessories with this tool could be hazardous. To reduce the
risk of injury, only D
WALT recommended accessories should be used with this product.
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Recommended accessories for use with your tool are available at extra cost from your local dealer
or authorized service center. If you need assistance in locating any accessory, please contact
D
WALT Industrial Tool Co., 701 East Joppa Road, Towson, MD 21286, call 1–800–4-D
e
(1–800–433–9258) or visit our website: www.dewalt.com.
Optional Accessories
The following accessories, designed for your saw, may be helpful. In some cases, other locally
obtained work supports, length stops, clamps, etc., may be more appropriate. Use care in
selecting and using accessories.
Clamp: DW7082
Used for firmly clamping workpiece to the saw fence for precision cutting.
Dust Bag: DW7053
Equipped with a zipper for easy emptying, the dust bag will capture the majority of the
sawdust produced.
Crown Molding Fence: DW7084
Used for precision cutting of crown molding.
sAW BlADEs: ALWAYS USE 12" (305 mm) 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 hook angles in excess of 7°.

BLADE DESCRIPTIONS

APPLICATION
Construction saw Blades (maximum thin kerf with anti-stick rim)
General Purpose
Fine Crosscuts
Woodworking saw Blades (provide smooth, clean cuts)
Fine crosscuts
Non-ferrous metals
nOTE: For cutting non-ferrous metals, use only saw blades with TCG (Triple Chip
Grind) teeth designed for this purpose.
Repairs
The charger, power supply and battery pack are not serviceable. There are no serviceable parts
inside the charger, power supply and battery pack.

WARNING: To assure product SAFETY and RELIABILITY, repairs, maintenance and
adjustment (including brush inspection and replacement) should be performed by a
D
WALT factory service center or a D
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replacement parts.
Service Information
Please have the following information available for all service calls:
Model Number _______________ Serial Number _______________________________
Date and Place of Purchase _________________________________________________
 58 
with clean, dry air.
WALT, have not been tested
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DIAMETER
TEETH
12" (305 mm)
40
12" (305 mm)
60
12" (305 mm)
80
12" (305 mm)
96
WALT authorized service center. Always use identical
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English
WALT
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