Removing And Replacing Belt; Maintenance - DeWalt DW717 Instruction Manual

- EXAMPLES-
NO. SIDES ANGLE MITER OR BEVEL
4 45 °
5 36 °
6 30 °
7 25.7 °
8 22.5 °
9 20 °
10 18°
(The chart assumes that all sides are of equal length.) For a shape that is not shown in the chart,
use the following formula. 180° divided by the number of sides equals the miter (if the material is
cut vertically) or bevel angle (if the material is cut laying flat).
CUTTING COMPOUND MITERS
A compound miter is a cut made using a miter angle and a bevel angle at the same time. This is
the type of cut used to make frames or boxes with slanting sides like the one shown in Figure 16.
NOTE: If the cutting angle varies from cut to cut, check that the bevel clamp knob and the miter
lock knob are securely tightened. These knobs must be tightened after making any changes in
bevel or miter.
The chart (Table 1) shown will assist you in selecting the proper bevel and miter settings for
common compound miter cuts. To use the chart, select the desired angle "A" (Fig. 16) of your
project and locate that angle on the appropriate arc in the chart. From that point follow the chart
straight down to find the correct bevel angle and straight across to find the correct miter angle.
Set your saw to the prescribed angles and make a few trial cuts. Practice fitting the cut pieces
together until you develop a feel for this procedure and feel comfortable with it.
EXAMPLE: To make a 4 sided box with 26 ° exterior angles (Angle A, Fig. 16), use the upper right
arc. Find 26 ° on the arc scale. Follow the horizontal intersecting line to either side to get miter
angle setting on saw (42°). Likewise, follow the vertical intersecting line to the top or bottom to
get the bevel angle setting on the saw (18°). Always try cuts on a few scrap pieces of wood to
verify settings on saw.
CUTTING BASE MOLDING
ALWAYS MAKE A DRY RUN WITHOUT POWER BEFORE MAKING ANY CUTS.
Straight 90° cuts:
Position the wood against the fence and hold it in place as shown in Figure 11. Turn on the
saw, allow the blade to reach full speed and lower the arm smoothly through the cut.
CUTTING BASE MOLDING UP TO 4.75" (121 mm) HIGH VERTICALLY AGAINST THE
FENCE
Position material as shown in Figure 11.
All cuts made with the back of the molding against the fence and bottom of the molding against
the base.
INSIDE CORNER:
Left side
1. Miter left 45 °
2. Save left side of cut
Right side
1. Miter Right 45 °
2. Save right side of cut
Material up to 6.5" (159 mm) can
CUTTING CROWN MOLDING
OUTSIDE CORNER:
Left side
1. Miter right at 45 °
2. Save left side of cut
Right side
1. Miter left at 45 °
2. Save right side of cut
be cut as described above.
Your miter saw is better suited to the task of cutting crown molding than any other type tool
made. In order to fit properly, crown molding must be compound mitered with extreme accuracy.
The two flat surfaces on a given piece of crown molding are at angles that, when added together,
equal exactly 90°. Most, but not all, crown molding has a top rear angle (the section that fits flat
against the ceiling) of 52° and a bottom rear angle (the part that fits flat against the wall) of 38°.
Your miter saw has special pre-set miter latch points at 31.62 ° left and right for cutting crown
molding at the proper angle and bevel stop pawls at 33.85 ° left and right. There is also a mark on
the Bevel scale at 33.85 °.
The chart below gives the proper settings for cutting crown molding. (The numbers for the miter
and bevel settings are very precise and are not easy to accurately set on your saw.) Since most
rooms do not have angles of precisely 90 °, you will have to fine tune your settings anyway.
PRETESTING WITH SCRAP MATERIAL IS EXTREMELY IMPORTANT!
INSTRUCTIONS FOR CUTTING CROWN MOLDING LAYING FLAT AND USING THE
COMPOUND FEATURES
1. Molding laying with broad back surface down flat on saw table (Fig. 17).
2. The settings below are for All Standard (U.S.) crown molding with 52° and 38 ° angles.
BEVEL SE'rI'ING
33.85 ° Left
33.85 ° Right
33.85 ° Right
33.85 ° Left
TYPE OF CUT
LEFT SIDE, INSIDE CORNER:
1. Top of molding against fence
2. Miter table set right 31.62 °
3. Save left end of cut
RIGHT SIDE, INSIDE CORNER:
1. Top of molding against fence.
2. Miter table set at left 31.62 °
3. Save right end of cut
LEFT SIDE, OUTSIDE CORNER:
1. Top of molding against fence.
2. Miter table set at left 31.62 °
3. Save left end of cut
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 cu'rI'ING 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 90 ° 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
saw.
INSIDE CORNER:
Left side
1. Miter right at 45 °
2. Save right side of cut
Right side
1. Miter left at 45 °
2. Save left side of cut
molding must rest squarely on the fence and base of the
OUTSIDE CORNER:
Left side
1. Miter left at 45 °
2. Save right side of cut
Right side
1. Miter right at 45 °
2. Save left side of cut
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.
cu'n'ING 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.
CU'I-I'ING 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 15.4" (391 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 0° miter.
2. Remove backfence screws from right rear foot and install them into the right hand fence screw
holes (Fig. 25).
_WARNING: Do not cut material using the special setup without properly installing the backfence
screws, otherwise the material will not be supported properly and may cause loss of control and
possible injury.
3. 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.
4. Mount the 14.5" x 26" (368 x 660 mm) platform to the saw using 4 three-inch 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.
AWARNING: 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.
5. Place the workpiece to be cut on top of the platform mounted to the table. Ensure the
workpiece is firmly against the backfence screws (Fig. 25).
6. 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 0°, the platform may weaken and not
properly support the work. Install a new, unused platform to the saw after presetting the desired
miter angle.
ACAUTION: 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 lubricantsor 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 on 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 informationavailable 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 DEWALT factory service center, a DEWALT authorized service center or other
qualified service personnel. Always use identical replacement parts.
Three Year Limited Warranty
DEWALT 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-DEWALT (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, DEWALT tools are covered by our:
1 YEAR FREE SERVICE
DEWALT 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 DEWALT 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-DEWALT (1-800-433-9258) for a free replacement.
y ...... ,
_PNOPE_LY SECUNE BRACI(ET
WiTH BOTH $C_£WS BEFORE USE. ALWAYS AOJtlST FENCE PROFEREY BEFORE OSE,
_1 CLAM P S MALL PIECES BEF0_E CUTTIN _. SEE MANUAL,
ASEGURE LA MENSULA AJ_STE LAG_iA DEBiOAMEN_ ANTES 0E UTILIZAR LA
OEBIBAMEN3'E C0_ AMIBOS HE_AMBEt_TA.A_EGURE LAS pIEZAS PEOUE_AS ANTESOE
TOXNJLLOS ANTES _)E PONER EN C0_ARLA$. CONSULT_ ELMANUAL,
MA_CHA LA HERf_AMIENTA.
_IIEN FIXER LESUPPORT
A EAiOE DES DEUX VIS
%AVAST tlJTIIISATION.
DW717 ................
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 DEWALT retailer or DEWALT 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.