DeWalt Miter Saw DW 718 - Manual (Page 6)

BEVEL SETTING TYPE OF CUT
33.85° Right
RIGHT SIDE, INSIDE CORNER:
1. Top of molding against fence.
2. Miter table set at left 31.62°
3. Save right end of cut
33.85° Right
LEFT SIDE, OUTSIDE CORNER:
1. Top of molding against fence.
2. Miter table set at left 31.62°
3. Save left end of cut
33.85° Left
RIGHT SIDE, OUTSIDE CORNER:
1. Top of molding against fence
2. Miter table set right 31.62°
3. Save right end of cut
When setting bevel and miter angles for all compound miters, remember that:
The angles presented for crown moldings are very precise and difficult to set exactly. Since
they can easily shift slightly and very few rooms have exactly square corners, all settings
should be tested on scrap molding.
PRETESTING WITH SCRAP MATERIAL IS EXTREMELY IMPORTANT!
ALTERNATIVE METHOD FOR CUTTING CROWN MOLDING
Place the molding on the table at an angle between the fence and the saw table, as shown
in Figure 18. Use of the crown molding fence accessory (DW7084) is highly recommended
because of its degree of accuracy and convenience. The crown molding fence accessory is
available for purchase from your local dealer.
The advantage to cutting crown molding using this method is that no bevel cut is required.
Minute changes in the miter angle can be made without affecting the bevel angle. This way,
when corners other than 90º are encountered, the saw can be quickly and easily adjusted for
them. Use the crown molding fence accessory to maintain the angle at which the molding will
be on the wall.
INSTRUCTIONS FOR CUTTING CROWN MOLDING ANGLED BETWEEN THE FENCE
AND BASE OF THE SAW FOR ALL CUTS:
1. Angle the molding so the bottom of the molding (part which goes against the wall when
installed) is against the fence and the top of the molding is resting on the base of the saw,
as shown in Figure 18.
2. The angled “flats” on the back of the molding must rest squarely on the fence and base of
the saw.
INSIDE CORNER: OUTSIDE CORNER:
Left side Left side
1. Miter right at 45° 1. Miter left at 45°
2. Save right side of cut 2. Save right side of cut
Right side Right side
1. Miter left at 45° 1. Miter right at 45°
2. Save left side of cut 2. Save left side of cut
Special Cuts
NEVER MAKE ANY CUT UNLESS THE MATERIAL IS SECURED ON THE TABLE AND
AGAINST THE FENCE.
ALUMINUM CUTTING
ALWAYS USE THE APPROPRIATE SAW BLADE MADE ESPECIALLY FOR CUTTING
ALUMINUM. These are available at your local D
E WALT retailer or D E WALT service center.
Certain workpieces, due to their size, shape or surface finish, may require the use of a clamp
or fixture to prevent movement during the cut. Position the material so that you will be cutting
the thinnest cross section, as shown in Figure 19. Figure 20 illustrates the wrong way to cut
these extrusions. Use a stick wax cutting lubricant when cutting aluminum. Apply the stick wax
cutting lubricant directly to the saw blade before cutting. Never apply stick wax to a moving
blade.
The wax, available at most hardware stores and industrial mill supply houses, provides proper
lubrication and keeps chips from adhering to the blade.
Be sure to properly secure workpiece.
Refer to Saw Blades under Optional Accessories for correct saw blade.
BOWED MATERIAL
When cutting bowed material always position it as shown in Figure 21 and never like that
shown in Figure 22. Positioning the material incorrectly will cause it to pinch the blade near the
completion of the cut.
CUTTING PLASTIC PIPE OR OTHER ROUND MATERIAL
Plastic pipe can be easily cut with your saw. It should be cut just like wood and CLAMPED OR
HELD FIRMLY TO THE FENCE TO KEEP IT FROM ROLLING. This is extremely important
when making angle cuts.
CUTTING LARGE MATERIAL
Occasionally you will encounter a piece of wood a little too large to fit beneath the blade 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 23. 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.
SPECIAL SET-UP FOR WIDE CROSSCUTS
Your saw can cut very wide [up to 16" (406 mm)] workpieces when a special set up is used. To
set the saw up for these workpieces, follow these steps:
1. Remove both left and right sliding fences from the saw and set aside. To remove them,
unscrew the fence knobs several turns and slide each fence outward. Adjust and lock the
miter control so that it is at 0º miter.
2. Make a platform using a piece of 1.5" (38 mm) thick particleboard or similar flat strong
1.5" thick wood to the dimensions: 14.5" x 26" (368 x 660 mm). The platform must be flat
otherwise the material could move during cutting and cause injury.
3. Mount the 14.5" x 26" (368 x 600 mm) platform to the saw using four 3" (76.2 mm) long
wood screws through the holes in the base fence (Fig. 24). Four screws must be used to
properly secure the material. When the special set up is used, the platform will be cut into
two pieces. Ensure the screws are tightened properly otherwise material could loosen and
cause injury. Ensure the platform is firmly flat on the table, against the fence, and centered
evenly from left to right.
WARNING: Ensure the saw is mounted firmly to a stable flat surface. Failure to do so could
cause the saw to be unstable and fall causing personal injury.
4. Place the workpiece to be cut on top of the platform mounted to the table. Ensure the
workpiece is firmly against the backfence (Fig. 25).
5. Secure the material before cutting. Cut slowly through the material using a out-down-and-
back motion. Failure to clamp securely or cut slowly could result in the material coming
loose and causing injury.
After several cuts are made at various miter angles other than 0º, the platform may weaken
and not properly support the work. Install a new, unused platform to the saw after presetting
the desired miter angle.
CAUTION: Continued use of a platform with several kerfs may cause loss of material control
and possible injury.
Removing and Replacing Belt
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 as shown in Figure 26. 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 Phillips head screws shown. Then rotate the set screw on
the top of the motor plate casting until the proper tension is achieved. Tighten the four screws
securely and replace the belt cover.
NOTE: Over tightening the belt will cause premature motor failure.
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.
1. All bearings are sealed. They are lubricated for life and need no further maintenance.
2. 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.
3. The brushes are designed to give you several years of use. If they ever need replacement
follow the instructions under Brushes or return the tool to the nearest service center for
repair. Service center locations are packed with your tool.
Service Information
Please have the following information available for all service calls:
Model Number __________________ Serial Number _____________________________________
Date and Place of Purchase __________________________________________________________
Repairs
To assure product SAFETY and RELIABILITY, repairs, maintenance and adjustment should be
performed by a D
E WALT factory service center, a D E WALT authorized service center or other
qualified service personnel. Always use identical replacement parts.
Three Year Limited Warranty
D E WALT will repair, without charge, any defects due to faulty materials or workmanship for
three years from the date of purchase. This warranty does not cover part failure due to normal
wear or tool abuse. For further detail of warranty coverage and warranty repair information, visit
www.dewalt.com or call 1-800-4-D
E WALT (1-800-433-9258). This warranty does not apply to
accessories or damage caused where repairs have been made or attempted by others. This
warranty gives you specific legal rights and you may have other rights which vary in certain
states or provinces.In addition to the warranty, D
E WALT tools are covered by our:
1 YEAR FREE SERVICE
D E WALT will maintain the tool and replace worn parts caused by normal use, for free, any time
during the first year after purchase.
90 DAY MONEY BACK GUARANTEE
If you are not completely satisfied with the performance of your D E WALT Power Tool, Laser, or
Nailer for any reason, you can return it within 90 days from the date of purchase with a receipt
for a full refund – no questions asked.
LATIN AMERICA: This warranty does not apply to products sold in Latin America. For
products sold in Latin America, see country specific warranty information contained either in
the packaging, call the local company or see website for warranty information.
FREE WARNING LABEL REPLACEMENT: If your warning labels become illegible or are
missing, call 1-800-4-D
E WALT (1-800-433-9258) for a free replacement.
Patent Notification
Manufactured under one or more of the following U.S. patents:
6,823,765 6,101,914 5,907,987 5,375,495
6,810,780 6,035,754 5,862,734 5,285,708
6,520,059, 6,032,563 5,582,089 5,199,343
Other patents may be pending.
Troubleshooting Guide
BE SURE TO FOLLOW SAFETY RULES AND INSTRUCTIONS
TROUBLE! WHAT’S WRONG? WHAT TO DO
Saw will not start 1. Saw not plugged in 1. Plug in saw.
2. Fuse blown or circuit breaker tripped 2. Replace fuse or reset circuit breaker.
3. Cord damaged 3. Have cord replaced by authorized service center.
4. Brushes worn out 4. Have brushes replaced by authorized service center or replace them yourself. Refer to Brushes.
Saw makes
unsatisfactory cuts 1. Dull blade 1. Replace blade. Refer to Changing or Installing a New Saw Blade.
2. Blade mounted backwards 2. Turn blade around. Refer to Changing or Installing a New Saw Blade.
3. Gum or pitch on blade 3. Remove blade and clean with turpentine and coarse steel wool or household oven cleaner
4. Incorrect blade for work being done 4. Change the blade type. Refer to Saw Blades.
Blade does not come up to
speed 1. Extension cord too light or too long 1. Replace with adequate size cord. Refer to Use Proper Extension Cord under Important
Safety Instructions.
2. Low house current 2. Contact your electric company.
Machine vibrates excessively 1. Saw not mounted securely to stand or work
bench
1. Tighten all mounting hardware. Refer to Bench Mounting.
2. Stand or bench on uneven floor 2. Reposition on flat level surface. Refer to Familiarization.
3. Damaged saw blade 3. Replace blade. Refer to Changing or Installing a New Saw Blade.
Does not make accurate
miter cuts 1. Miter scale not adjusted correctly 1. Check and adjust. Refer to Miter Scale Adjustment under Adjustments.
2. Blade is not square to fence 2. Check and adjust. Refer to Miter Scale Adjustment under Adjustments.
3. Blade is not perpendicular to table 3. Check and adjust fence. Refer to Bevel Square to Table Adjustment under Adjustments.
4. Workpiece moving 4. Clamp workpiece securely to fence or glue 120 grit sandpaper to fence with rubber cement.
Material pinches blade 1. Cutting bowed material 1. Refer to Bowed Material under Special Cuts.