DeWalt XR DCS438 Original Instructions Manual page 44

EngLIsh
To reduce the risk of injury, only D
accessories should be used with this product.
A dull wheel will cause slow inefficient cutting, overload the
motor, could cause excessive splintering, and could increase
the possibility of kickback. Please refer to the table below to
determine the correct wheel for your application.
Wheel type
Diamond Multi‑Material Wheel Drywall, fiber cement, plastic, steel, non ferrous
(DT20590‑QZ) materials
Bonded Abrasive Wheel Steel, stainless steel, non‑ferrous materials
(DT20592‑QZ)
Diamond Tile Wheel Ceramic Tile, Porcelain and Granite/Marble/
(DT20591‑QZ) Stone
Installing Wheels (Fig. A, C)

WARNING: Burn Hazard. Sharp parts. ALWAYS wear
gloves when changing wheels. Wheels have sharp edges
or may get extremely hot during operation, and may
damage bare hands.

WARNING: To reduce the risk of injury, only use wheels
that are no greater than 76 mm in diameter, have an inner
diameter of 10 mm, and without cutting teeth. Thickness
of wheel not to exceed 0.09". Type 1 wheels are for side
grinding only, not surface grinding. Never force a wheel
onto the machine or alter the size of the arbor hole.
1. Remove the battery.
2. Lay unit on a firm surface, with the spindle
facing upward.
3. Hold spindle lock button
from turning. Spindle threads are left hand.
4. Using supplied 6 mm wrench
screw , outer flange
18
installed and inner flange
5. Slip the inner flange over the spindle.
6. Slip wheel over spindle. Make sure wheel goes over pilot
diameter of inner flange.
nOTE: When installing diamond wheels, always match
direction of rotation of the wheel to the desired direction of
rotation of the tool. Diamond wheels will not cut effectively
unless the direction marked on the wheel matches the
direction of rotation. Check the setting of the forward/
reverse/lock off button
direction marked on the wheel.
7. Slip on outer flange with the flat side towards the
cut‑off wheel.
nOTE: The text "LOOSE TIGHTEN" will be visible when
installed correctly.
8. Start threading on spindle screw which will self align
outer flange. Make sure the wheel is fitted in the
correct orientation.
9. Engage spindle lock button and tighten nut with wrench.
Do not over tighten spindle screw.
10. Turn wheel by hand to ensure it is properly centered. The
wheel should not hit the shoe, guard or spindle screw. The
spindle screw and flanges should be tight.
42
WALT recommended
e
Application
15
6 to keep the spindle
13 , remove spindle
, used wheel if one is
17 19
16 . Spindle threads are left hand.
5 to make sure it matches the

WARNING: If the spindle screw has not been tightened
securely, it can loosen with the F (forward) direction
of rotation.
Adjusting the Guard Angle (Fig. D)

WARNING: There is a higher risk of kickback when guard
is moved backwards leading to wider opening. The guard
must be opened wider only when required.
You can adjust the angle of the guard.
1. Remove the battery.
2. Grasp the guard firmly and rotate to desired angle. The
12
guard can rotate 30 degrees, forward or backward.
Mounting, Removing and Adjusting the Dust
Shroud (Fig. A, E)
nOTE: The dust shroud is only for tile/concrete and drywall
cutting applications to connect to a vacuum for dust
collecting. We do not recommend use of the shroud for metal
cutting applications.
1. Remove the battery.
2. With the wheel properly installed, rotate the guard
the way forward.
3. Loosen the depth of cut wing nut
shoe. Hand‑tighten the depth of cut knob.
4. Maneuver the upper guard and wheel into the dust shroud
assembly 9 and rotate tool to lock in place. The front of the
guard will rest against the stop inside the assembly, and the
back of the guard will catch the release tab
To Remove the Dust Shroud
1. Remove the battery.
2. Loosen the depth of cut wing nut and fully extend the shoe.
Hand‑tighten the depth of cut wing nut.
3. Press in the shroud release button
out of the dust shroud assembly.
To Adjust the Depth of Cut
1. Loosen the depth of cut wing nut and slide the shroud up
or down. Use the markings on the depth of cut gauge to
help determine proper depth. Adjust the cutting depth to
the thickness of the workpiece. Less than 1/4" of the wheel
should be visible below the workpiece.
Attaching an AirLock
Extractor (Fig. F)

WARNING: Do not use dust extraction when cutting
metal. Swarf from metal cutting may be hot and may
spark which can melt vacuum hoses and may cause a fire
inside the vacuum.

WARNING: When using dust extraction, empty vacuum
before work begins and often during work. Use care in
disposing of dust. Dust can be hazardous to health if
inhaled, ingested or in contact with the skin. Materials in
fine dust can be explosive.
Your tool is compatible with the D
system. The AirLock™ allows for a fast, secure connection
12
11 and fully extend the
20 .
21 and rotate the tool
Compatible Dust
™
WALT AirLock™ connection
e
all