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h) Use extra caution when making a "pocket cut" into existing walls or other blind
areas. The protruding wheel may cut gas or water pipes, electrical wiring or objects that can
cause kickback.
Additional Safety Information
• Do not use Type 11 (flaring cup) wheels on this tool. Using inappropriate accessories can
result in injury.
• Air vents often cover moving parts and should be avoided. Loose clothes, jewelry or long
hair can be caught in moving parts.
• An extension cord must have adequate wire size (AWG or American Wire Gauge) for
safety. The smaller the gauge number of the wire, the greater the capacity of the cable, that is
16 gauge has more capacity than 18 gauge. An undersized cord will cause a drop in line voltage
resulting in loss of power and overheating. When using more than one extension to make up
the total length, be sure each individual extension contains at least the minimum wire size. The
following table shows the correct size to use depending on cord length and nameplate ampere
rating. If in doubt, use the next heavier gauge. The smaller the gauge number, the heavier the
cord.
Minimum Gauge for Cord Sets
Volts
Ampere Rating
120V
240V
More
Not More
Than
Than
0
6
6
10
10
12
12
16
WARNING: ALWAYS use safety glasses. Everyday eyeglasses are NOT safety glasses. Also use
face or dust mask if cutting operation is dusty. ALWAYS WEAR CERTIFIED SAFETY EQUIPMENT:
• ANSI Z87.1 eye protection (CAN/CSA Z94.3),
• ANSI S12.6 (S3.19) hearing protection,
• NIOSH/OSHA/MSHA respiratory protection.
WARNING: Some dust created by power sanding, sawing, grinding, drilling, and other
construction activities contains chemicals known to the State of California to cause cancer, birth
defects or other reproductive harm. Some examples of these chemicals are:
• lead from lead-based paints,
• crystalline silica from bricks and cement and other masonry products, and
• arsenic and chromium from chemically-treated lumber.
Your risk from these exposures varies, depending on how often you do this type of work. To reduce
your exposure to these chemicals: work in a well ventilated area, and work with approved safety
equipment, such as those dust masks that are specially designed to filter out microscopic particles.
• Avoid prolonged contact with dust from power sanding, sawing, grinding, drilling, and
other construction activities. Wear protective clothing and wash exposed areas with
soap and water. Allowing dust to get into your mouth, eyes, or lay on the skin may promote
absorption of harmful chemicals.
WARNING: Use of this tool can generate and/or disperse dust, which may cause serious and
permanent respiratory or other injury. Always use NIOSH/OSHA approved respiratory protection
appropriate for the dust exposure. Direct particles away from face and body.
WARNING: Always wear proper personal hearing protection that conforms to ANSI
S12.6 (S3.19) during use. Under some conditions and duration of use, noise from this product
may contribute to hearing loss.
WARNING: Always use eye protection. All users and bystanders must wear eye protection
that conforms to ANSI Z87.1.
WARNING: When not in use, place grinder on a stable surface where it will not move
inadvertantly, roll or cause a tripping or falling hazard. Serious personal injury may result.
CAUTION: To reduce the risk of personal injury, use extra care when working into a corner or
edge because a sudden, sharp movement of the tool may be experienced when the wheel or other
accessory contacts a secondary surface or a surface edge.
• The label on your tool may include the following symbols. The symbols and their definitions are
as follows:
V .....................volts
Hz ...................hertz
min .................minutes
or DC .....direct current
...................Class I Construction
.......................(grounded)
...................Class II Construction
(double insulated)
.../min ............per minute
IPM .................impacts per minute
SPM ...............strokes per minute
SAVE THESE INSTRUCTIONS FOR FUTURE USE
Motor
Be sure your power supply agrees with the nameplate marking. Voltage decrease of more than 10%
will cause loss of power and overheating. All D
operate, check the power supply.
COMPONENTS (Fig. 1, 2)
WARNING: Never modify the power tool or any part of it. Damage or personal injury could result.
A. Paddle switch (DWE4887, DWE4887N)
B. Lock-on button (DWE4887, DW888)
C. Lock-off lever (DWE4887, DWE4887N)
D. Trigger switch (DW888)
E. Spindle
INTENDED USE
The DWE4887, DWE4887N and DW888 heavy-duty die grinders have been designed for
professional grinding. DO NOT use under wet conditions or in presence of flammable liquids or
gases.
These heavy-duty die grinders are professional power tools. DO NOT let children come into contact
with the tool. Supervision is required when inexperienced operators use this tool.
Switches
WARNING: Before connecting the tool to a power source depress and release the switch once
without depressing the lock-on button to ensure that the switch is off. Depress and release the
switch as described above after any interruption in power supply to the tool, such as the activation
of a ground fault interrupter, throwing of a circuit breaker, accidental unplugging, or power failure. If
the switch is locked on, the tool will start unexpectedly when it is reconnected.
WARNING: Grasp tool firmly with both hands to maintain control of the tool at start up and
during use and until the wheel or accessory stops rotating. Make sure the wheel has come to a
complete stop be fore laying the tool down.
WARNING: To reduce unexpected tool movement, do not switch the tool on or off while under
load conditions. Allow the grinder to run up to full speed before touching the work surface. Lift the
tool from the surface before turning the tool off.
PADDLE SWITCH – DWE4887, DWE4887N (FIG. 1)
The lock-off lever (C), located on the paddle switch, is a safety feature that prevents accidental
activation of the grinder.
To turn the tool on, push the lock-off lever (C) toward the back of the tool, then depress the paddle
switch (A). The tool will run while the switch is depressed. Turn the tool off by releasing the paddle
switch.
WARNING: Do not disable the lock-off lever. If the lock-off lever is disabled, the tool may start
unexpectedly when it is laid down.
TRIGGER SWITCH – DW888 (FIG. 2)
Depressing the trigger switch turns the tool on. Releasing it turns the tool off. To lock the switch on,
fully depress the trigger switch, press and hold in the lock-on button (B), release the trigger switch
and the lock-on button. The tool will now remain on. To turn turn the tool off, depress and release
the trigger switch.
Lock-on Button – DWE4887, DW888 (Fig. 1, 2)
The lock-on button offers increased comfort in extended use applications. To lock the tool on, push
the lock-off lever (C, DWE4887) then depress the paddle switch/trigger switch.
With the tool running, depress the lock-on button (B). The tool will continue to run after the paddle
switch is released.
To unlock the tool, depress and release the paddle switch/trigger switch. This will cause the tool
to stop.
WARNING: Allow the tool to reach full speed before touching tool to the work surface. Lift the
tool from the work surface before turning the tool off.
REMOVAL OF LOCK-ON FEATURE (DW888)
The lock-on button (B) can be permanently removed without compromising compliance with
regulatory agencies shown on the tool's nameplate. Removal of the lock pin must be done by a
D
WALT Service Center.
E
OPERATION
WARNING: To reduce the risk of serious personal injury, turn tool off and disconnect tool
from power source before making any adjustments or removing/installing attachments
or accessories. Before reconnecting the tool, depress and release the trigger switch to
ensure that the tool is off.
Total Length of Cord in Feet (meters)
25 (7.6)
50 (15.2)
100 (30.5)
50 (15.2)
100 (30.5)
200 (61.0)
AWG
18
16
16
18
16
14
16
16
14
14
12
Not Recommended
A .........................amperes
W ........................watts
or AC .............alternating current
or AC/DC......alternating or direct current
n o .......................no load speed
n .........................rated speed
.......................earthing terminal
........................safety alert symbol
BPM ...................beats per minute
RPM ...................revolutions per minute
sfpm ...................surface feet per minute
WALT tools are factory tested; if this tool does not
E
F. Collet nut
G. Small spanner (13 mm)
H. Large spanner (17 mm)
I. Collet [1/4" (6.35 mm)]
FIG. 1
F
E
I
F
E
150 (45.7)
A
300 (91.4)
FIG. 2
14
I
12
12
E
F
FIG. 3
WARNING: Grasp tool firmly with both hands to maintain control of the tool at start up
and during use and until the wheel or accessory stops rotating. Make sure the wheel has
come to a complete stop be fore laying the tool down.
Put the work in a vise or clamp it securely. Use a face mask over the nose and mouth if the
operation raises dust. Treat the wheel with respect. Do not jam the wheel into the work or use
unnecessary pressure. Grind only on the edge of the wheel (Fig. 3), unless you have a special wheel
specifically made to permit grinding on the face of the wheel.
Mounting an Accessory (Fig. 1, 2)
WARNING: Accessories must be rated at least equal to the maximum speed marked on the
tool. Accessories running faster than their rated speed can break and fly apart.
WARNING: Accessories must be within the capacity rating marked on the tool. Incorrectly sized
accessories cannot be adequately controlled.
WARNING: Do not use accessories with a mandrel length exceeding 2.0" (50mm). Ensure that
the exposed mandrel length is no more than 1.0" (25mm) after inserting accessory into collet.
WARNING: Projectile hazard. Only use bits with shanks that match the installed collet.
Smaller shank bits will not be secure and could become loose during operation.
CAUTION: Never tighten the collet without first installing a router bit in it. Tightening an empty
collet, even by hand, can damage the collet.
This tool comes with a 1/4" (6.35 mm) collet (I).
1. Hold the spindle (E) using the smaller spanner (G) provided.
2. Loosen the collet nut (F) by turning it counterclockwise.
3. Insert the shank of the accessory into the collet (I).
4. Securely tighten the collet using the larger spanner (H) provided.
To remove the accessory, proceed in reverse order.
When starting the tool (with a new or replacement wheel installed) hold the tool in a well protected
area. If the wheel has an undetected crack or flaw, it should burst in less than one minute. Never
start tool with a person in line with the wheel. This includes the operator.
Precautions To Take When Sanding Paint
1. Sanding of lead based paint is NOT RECOMMENDED due to the difficulty of controlling the
contaminated dust. The greatest danger of lead poisoning is to children and pregnant women.
2. Since it is difficult to identify whether or not a paint contains lead without a chemical analysis,
we recommend the following precautions when sanding any paint:
PERSONAL SAFETY
1. No children or pregnant women should enter the work area where the paint sanding is being
done until all clean up is completed.
2. A dust mask or respirator should be worn by all persons entering the work area. The filter
should be replaced daily or whenever the wearer has difficulty breathing.
NOTE: Only those dust masks suitable for working with lead paint dust and fumes should be
used. Ordinary painting masks do not offer this protection. See your local hardware dealer for
the proper NIOSH-approved mask.
3. NO EATING, DRINKING or SMOKING should be done in the work area to prevent ingesting
contaminated paint particles. Workers should wash and clean up BEFORE eating, drinking or
smoking. Articles of food, drink, or smoking should not be left in the work area where dust
would settle on them.
ENVIRONMENTAL SAFETY
1. Paint should be removed in such a manner as to minimize the amount of dust generated.
2. Areas where paint removal is occurring should be sealed with plastic sheeting of 4 mils
thickness.
3. Sanding should be done in a manner to reduce tracking of paint dust outside the work area.
CLEANING AND DISPOSAL
1. All surfaces in the work area should be vacuumed and thoroughly cleaned daily for the duration
of the sanding project. Vacuum filter bags should be changed frequently.
2. Plastic drop cloths should be gathered up and disposed of along with any dust chips or other
removal debris. They should be placed in sealed refuse receptacles and disposed of through
regular trash pick-up procedures.
During clean up, children and pregnant women should be kept away from the immediate work
area.
3. All toys, washable furniture and utensils used by children should be washed thoroughly before
being used again.
MAINTENANCE
WARNING: To reduce the risk of serious personal injury, turn tool off and disconnect tool
from power source before making any adjustments or removing/installing attachments
or accessories. Before reconnecting the tool, depress and release the trigger switch to
ensure that the tool is off.
Cleaning
WARNING: Blowing dust and grit out of motor and switch actuator using clean, dry compressed
air is a necessary regular maintenance procedure. Dust and grit containing metal particles often
accumulate on interior surfaces and could create an electrical shock or electrocution if not
frequently cleaned out. It is recommended that a ground fault circuit interrupter (GFCI) is utilized to
further protect the user from electric shock resulting from the accumulation of conductive particles.
If the tool is deactivated by the GFCI, unplug the tool and check and clean the tool before resetting
the GFCI. ALWAYS WEAR SAFETY GLASSES (ANSI Z87.1) when cleaning or using this tool.
WARNING: Never use solvents or other harsh chemicals for cleaning the non-metallic parts
of the tool. These chemicals m ay 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.
Lubrication
Your power tool requires no additional lubrication.
Motor Brushes
DWE4887, DWE4887N
Please contact your local service center to inspect brushes.
MEULES À RECTIFIER LES MATRICES DWE4887
ESMERILADORA DE TROQUEL DWE4887
B
MEULES À RECTIFIER LES MATRICES DWE4887
ESMERILADORA DE TROQUEL DWE4887
C
G
B
DW888 2" (50 mm) DIE GRINDER
MEULES À RECTIFIER LES MATRICES DW888 DE 50 mm (2 po)
ESMERILADORA DE TROQUEL DW888 DE 50 mm (2")
DWE4887
1-1/2" (38 mm) DIE GRINDER
DE 38 mm (1-1/2 po)
DE 38 mm (1-1/2")
DWE4887N
1-1/2" (38 mm) DIE GRINDER
DE 38 mm (1-1/2 po)
DE 38 mm (1-1/2")
H
D
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