Wen 4282 User manual

8-INCH BENCH GRINDER
WITH LED LIGHTS
Instruction Manual
IMPORTANT: Your new tool has been engineered and manufactured to WEN’s highest standards for dependability,
ease of operation, and operator safety. When properly cared for, this product will supply you years of rugged,
trouble-free performance. Pay close attention to the rules for safe operation, warnings, and cautions. If you use
your tool properly and for its intended purpose, you will enjoy years of safe, reliable service.
NEED HELP? CONTACT US!
Have product questions? Need technical support? Please feel free to contact us:
TECHSUPPOR[email protected]1-800-232-1195 (M-F 8AM-5PM CST)
For replacement parts and the most up-to-date instruction manuals, visit WENPRODUCTS.COM
MODEL 4282, BG4282

CONTENTS
WELCOME 3
Introduction ..................................................................................................... 3
Specifications................................................................................................... 3
SAFETY 4
General Safety Rules........................................................................................ 4
Impact Wrench Safety Warnings...................................................................... 6
Electrical Information....................................................................................... 8
BEFORE OPERATING 9
Unpacking & Packing List.................................................................................9
Know Your Impact Wrench ............................................................................ 10
Assembly & Adjustments............................................................................... 11
OPERATION & MAINTENANCE 13
Operation ....................................................................................................... 13
Maintenance....................................................................................................15
Exploded View & Parts List.............................................................................17
Warranty Statement ........................................................................................19
To purchase accessories and replacement parts for your tool, visit WENPRODUCTS.COM
Cast Iron Bench Grinder Stand (Model 4288T)
2

SPECIFICATIONS
INTRODUCTION
Thanks for purchasing the WEN Bench Grinder. We know you are excited to put your tool to work, but first, please
take a moment to read through the manual. Safe operation of this tool requires that you read and understand this
operator’s manual and all the labels affixed to the tool. This manual provides information regarding potential safety
concerns, as well as helpful assembly and operating instructions for your tool.
NOTE: The following safety information is not meant to cover all possible conditions and situations that may occur.
WEN reserves the right to change this product and specifications at any time without prior notice.
At WEN, we are continuously improving our products. If you find that your tool does not exactly match this manual,
please visit wenproducts.com for the most up-to-date manual or contact our customer service at 1-800-232-1195.
Keep this manual available to all users during the entire life of the tool and review it frequently to maximize
safety for both yourself and others.
Indicates danger, warning, or caution. The safety symbols and the explanations with them deserve your
careful attention and understanding. Always follow the safety precautions to reduce the risk of fire, electric shock
or personal injury. However, please note that these instructions and warnings are not substitutes for proper ac-
cident prevention measures.
Model Number 4282, BG4282
Motor 120V, 60 Hz, 4.8A
Wheel Speed 3450 RPM (No Load)
Grinding Wheel Size 8 in. x 1 in.
Arbor Size 5/8 Inch
Arbor Thread M16-2.0
Wheel Grits #60 (Medium Grit, Left Wheel) and #36 (Coarse Grit, Right Wheel)
Product Weight 30.5 Pounds
Product Dimensions 14 in. x 10 in. x 11.75 in.
3

GENERAL SAFETY RULES
WORK AREA SAFETY
1. Keep work area clean and well lit. Cluttered or dark
areas invite accidents.
2. Do not operate power tools in explosive atmo-
spheres, such as in the presence of flammable liquids,
gases or dust. Power tools create sparks which may ig-
nite the dust or fumes.
3. Keep children and bystanders away while operating
a power tool. Distractions can cause you to lose control.
ELECTRICAL SAFETY
1. Power tool plugs must match the outlet. Never mod-
ify the plug in any way. Do not use any adapter plugs
with earthed (grounded) power tools. Unmodified plugs
and matching outlets will reduce risk of electric shock.
2. Avoid body contact with earthed or grounded surfac-
es such as pipes, radiators, ranges and refrigerators.
There is an increased risk of electric shock if your body
is earthed or grounded.
3. Do not expose power tools to rain or wet conditions.
Water entering a power tool will increase the risk of elec-
tric shock.
4. Do not abuse the cord. Never use the cord for car-
rying, pulling or unplugging the power tool. Keep cord
away from heat, oil, sharp edges or moving parts.
Damaged or entangled cords increase the risk of electric
shock.
5. When operating a power tool outdoors, use an ex-
tension cord suitable for outdoor use. Use of a cord
suitable for outdoor use reduces the risk of electric
shock.
6. If operating a power tool in a damp location is un-
avoidable, use a ground fault circuit interrupter (GFCI)
protected supply. Use of a GFCI reduces the risk of elec-
tric shock.
PERSONAL SAFETY
1. Stay alert, watch what you are doing and use com-
mon sense when operating a power tool. Do not use a
power tool while you are tired or under the influence
of drugs, alcohol or medication. A moment of inatten-
tion while operating power tools may result in serious
personal injury.
2. Use personal protective equipment. Always wear
eye protection. Protective equipment such as a respira-
tory mask, non-skid safety shoes and hearing protection
used for appropriate conditions will reduce the risk of
personal injury.
3. Prevent unintentional starting. Ensure the switch is
in the off-position before connecting to power source
and/or battery pack, picking up or carrying the tool.
Carrying power tools with your finger on the switch or
energizing power tools that have the switch on invites
accidents.
4. Remove any adjusting key or wrench before turning
the power tool on. A wrench or a key left attached to a
rotating part of the power tool may result in personal
injury.
5. Do not overreach. Keep proper footing and balance
at all times. This enables better control of the power
tool in unexpected situations.
6. Dress properly. Do not wear loose clothing or jew-
elry. Keep your hair and clothing away from moving
parts. Loose clothes, jewelry or long hair can be caught
in moving parts.
Safety is a combination of common sense, staying alert and knowing how your item works. The term “power tool”
in the warnings refers to your mains-operated (corded) power tool or battery-operated (cordless) power tool.
SAVE THESE SAFETY INSTRUCTIONS.
WARNING! Read all safety warnings and all instructions. Failure to follow the warnings and instructions may
result in electric shock, fire and/or serious injury.
4

GENERAL SAFETY RULES
7. If devices are provided for the connection of dust
extraction and collection facilities, ensure these are
connected and properly used. Use of dust collection
can reduce dust-related hazards.
POWER TOOL USE AND CARE
1. Do not force the power tool. Use the correct power
tool for your application. The correct power tool will
do the job better and safer at the rate for which it was
designed.
2. Do not use the power tool if the switch does not turn
it on and off. Any power tool that cannot be controlled
with the switch is dangerous and must be repaired.
3. Disconnect the plug from the power source and/or
the battery pack from the power tool before making
any adjustments, changing accessories, or storing
power tools. Such preventive safety measures reduce
the risk of starting the power tool accidentally.
4. Store idle power tools out of the reach of children
and do not allow persons unfamiliar with the power
tool or these instructions to operate the power tool.
Power tools are dangerous in the hands of untrained us-
ers.
5. Maintain power tools. Check for misalignment or
binding of moving parts, breakage of parts and any
other condition that may affect the power tool’s opera-
tion. If damaged, have the power tool repaired before
use. Many accidents are caused by poorly maintained
power tools.
6. Keep cutting tools sharp and clean. Properly main-
tained cutting tools with sharp cutting edges are less
likely to bind and are easier to control.
7. Use the power tool, accessories and tool bits, etc.
in accordance with these instructions, taking into ac-
count the working conditions and the work to be per-
formed. Use of the power tool for operations different
from those intended could result in a hazardous situa-
tion.
8. Use clamps to secure your workpiece to a stable
surface. Holding a workpiece by hand or using your
body to support it may lead to loss of control.
9. KEEP GUARDS IN PLACE and in working order.
SERVICE
1. Have your power tool serviced by a qualified repair
person using only identical replacement parts. This
will ensure that the safety of the power tool is main-
tained.
CALIFORNIA PROPOSITION 65 WARNING
Some dust created by power sanding, sawing, grinding,
drilling, and other construction activities may contain
chemicals, including lead, known to the State of Califor-
nia to cause cancer, birth defects, or other reproductive
harm. Wash hands after handling. Some examples of
these chemicals are:
• Lead from lead-based paints.
• Crystalline silica from bricks, cement, and other
masonry products.
• 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 ex-
posure to these chemicals, work in a well-ventilated area
with approved safety equipment such as dust masks
specially designed to filter out microscopic particles.
Safety is a combination of common sense, staying alert and knowing how your item works. The term “power tool”
in the warnings refers to your mains-operated (corded) power tool or battery-operated (cordless) power tool.
SAVE THESE SAFETY INSTRUCTIONS.
WARNING! Read all safety warnings and all instructions. Failure to follow the warnings and instructions may
result in electric shock, fire and/or serious injury.
5

BENCH GRINDER SAFETY
1. This bench grinder is designed for sharpening and
honing cutting tools, using the appropriate accessories.
Using the machine for any other purpose for which it
is not designed may result in serious injuries, machine
damage and voiding of the warranty.
2. Grinding wheel safety:
• Only use grinding wheels rated for a speed higher
than 3450 RPM (maximum RPM of the tool).
• Inspect wheels for cracks or fragments before start-
ing the machine. Replace damaged wheels immedi-
ately. Never use a questionable grinding wheel, as
the RPM of the machine can send broken wheel frag-
ments flying at high speeds.
• Do not use a wheel that vibrates. If a wheel vibrates,
it may be that the bearings of the shaft need replac-
ing.
• Check that the grinding stone can rotate smoothly
before starting the machine.
• The grinding wheel is for grinding. Never attempt to
cut anything with the grinding wheel.
3. The use of accessories or attachments not recom-
mended by the manufacturer may result in a risk of per-
sonal injury.
4. DANGER! Fire Hazard. Do not grind or polish magne-
sium or magnesium alloys.
5. Preventing accidental starting. Make sure the power
switch is in the OFF position prior to plugging in the ma-
chine. Always make sure the power switch is in the OFF
position and the machine is unplugged when doing any
cleaning, adjustments, assembly, setup operations, or
when not in use.
PERSONAL SAFETY
1. Operate in a well ventilated area. Keep the floor
area around the bench grinder level and free of
slippery substances or other tripping hazards.
2. Wear ANSI-approved safety goggles to protect your
eyes from sparks and chips. Use hearing protection to
protect yourself from hearing loss.
3. DO NOT wear loose clothing or jewelry as they might
get drawn in by the tool. Tie back long hair.
4. People with pacemakers should consult their
physician(s) before use. Electromagnetic fields in close
proximity to pacemakers could cause pacemaker inter-
ference or pacemaker failure.
5. Chips are harmful to your health. Use NIOSH-approved
dust masks or other respiratory protection during opera-
tion and cleaning.
6. Always turn off and unplug the bench grinder before
making any adjustments or repair tasks. Never adjust the
bench grinder or the workpiece while the tool is running.
PREPARING THE BENCH GRINDER
When transporting the bench grinder, carry it by the
base. Never carry the device by its guards or its acces-
sories.
1. Examine the bench grinder for any damaged or miss-
ing parts. Replace or repair damaged parts before op-
eration. Periodically check that all nuts, bolts and other
fasteners are properly tightened.
2. Do not operate this tool until it is completely assem-
bled and installed according to the instructions. Make
sure all adjustments are correct and all connections are
tight. Keep all guards in place.
DURING OPERATION
1. Never start the machine with any load already applied
to either grinding wheel. Stand to the side of the bench
grinder during start-up. Switch it ON and let the bench
grinder reach full speed for roughly one minute to warm
up the wheel and to ensure proper operation.
2. Never grind on a cold wheel. Run the bench grinder
for one full minute before applying the workpiece. Cold
wheels have an increased likelihood of chipping during
operation.
3. Only grind on the face of the grinding wheel. Do not
grind on the side of the wheel.
BENCH GRINDER SAFETY WARNINGS
WARNING! Do not operate the power tool until you have read and understood the following instructions and
the warning labels.
6

BENCH GRINDER SAFETY WARNINGS
WARNING! Do not operate the power tool until you have read and understood the following instructions and
the warning labels.
DURING OPERATION (CONT.)
4. Keep clear of moving parts. Keep arms, hands and
other vital appendages away from the grinding and hon-
ing wheel. Do not reach behind or beneath the rotating
wheel. Avoid awkward operation and hand positions. An
accident could easily send the operator’s hand into the
wheel.
5. If you are interrupted when operating the bench grind-
er, complete the process and switch the bench grinder
off before looking up.
6. Always hold the workpiece firmly against the tool rest.
7. Never attempt to cut anything with the grinding wheel.
8. Do not use the bench grinder unless all guards are in
place. Do not operate with any guard disabled, damaged,
or removed. Moving guards must move freely and close
instantly.
9. Disconnect the power source and allow the wheels to
come to a complete stop before making any adjustments
to either the machine or the grinding wheels.
10. Clean the machine thoroughly when changing ma-
terial types in workpieces. Combining certain materials
can increase the chances of an explosion or fire hazard.
11. Should any component of your bench grinder be
missing/damaged or fail in any way, shut off the switch
and remove the plug from power supply outlet. Have a
certified technician replace the missing, damaged, or
failed parts using only identical replacement parts before
resuming operation.
7

ELECTRICAL INFORMATION
AMPERAGE REQUIRED GAUGE FOR EXTENSION CORDS
25 ft. 50 ft. 100 ft. 150 ft.
4.8A 18 gauge 16 gauge 16 gauge 14 gauge
3. Check
with a licensed electrician or service personnel if you do not completely
understand the grounding instructions or whether the tool is properly grounded.
4. Use only three-wire extension cords that have three-pronged plugs and outlets
that accept the tool’s plug (INSERT CR). Repair or replace a damaged or worn cord
immediately.
CAUTION! In all cases, make certain the outlet in question is properly grounded. If
you are not sure, have a licensed electrician check the outlet.
GUIDELINES AND RECOMMENDATIONS FOR EXTENSION CORDS
GROUNDING INSTRUCTIONS
In the event of a malfunction or breakdown , grounding provides the path of least resistance for an electric
current and reduces the risk of electric shock. This tool is equipped with an electric cord that has an
equipment grounding conductor and a grounding plug. The plug MUST be plugged into a matching outlet
that is properly installed and grounded in accordance with ALL local codes and ordinances.
1. Do not modify the plug provided. If it will not fit the outlet, have the proper outlet installed by a licensed
electrician.
2. Improper connection of the equipment grounding conductor can result in electric shock. The conductor
with the green insulation (with or without yellow stripes) is the equipment grounding conductor. If repair or
replacement of the electric cord or plug is necessary, DO NOT connect the equipment grounding conductor
to a live terminal.
1. Examine extension cord before use. Make sure your extension cord is properly wired and in good condition.
Always replace a damaged extension cord or have it repaired by a qualified person before using it.
2. Do not abuse extension cord. Do not pull on cord to disconnect from receptacle; always disconnect by pulling on
plug. Disconnect the extension cord from the receptacle before disconnecting the product from the extension cord.
Protect your extension cords from sharp objects, excessive heat and damp/wet areas.
3. Use a separate electrical circuit for your tool. This circuit must not be less than a 12-gauge wire and should be
protected with a 15A time-delayed fuse. Before connecting the motor to the power line, make sure the switch is in
the OFF position and the electric current is rated the same as the current stamped on the motor nameplate. Running
at a lower voltage will damage the motor.
Fig. 1
When using an extension cord, be sure to use one heavy enough to carry the current your product will draw. An un-
dersized cord will cause a drop in line voltage resulting in loss of power and overheating. The table below shows the
correct size to be used according to cord length and ampere rating. When in doubt, use a heavier cord. The smaller
the gauge number, the heavier the cord.
8

Pre-Installed Accessories
Accessories & Hardware
Components
UNPACKING & PACKING LIST
UNPACKING
Carefully remove the bench grinder from the packaging and place it on a sturdy, flat surface. Make sure to take out
all contents and accessories. Do not discard the packaging until everything is removed. Check the packing list below
to make sure you have all of the parts and accessories. If any part is missing or broken, please contact customer
service at 1-800-232-1195 (M-F 8-5 CST), or email [email protected].
Bench Grinder
Left Spark Deflector with LED
Assembly & Locking Knob
Right Spark Deflector with LED
Assembly & Locking Knob
Left Work Rest, Grooved
Right Work Rest
Left Work Rest Bracket
Right Work Rest Bracket Work Rest Knobs (2)
Coolant Tray
Tools Needed but Not Included
Eye Shields (2)
Carriage Bolts (4)
AAA Batteries (4)
Flat Washers (2)
Eye Shield
Lock Knobs (2)
Phillips Screws with Lock
Washers & Flat Washers (4)
Bracket Knobs (2)
Phillips Screwdriver
Adjustable Wrench
or 15/16 (24 mm) Crescent or Socket Wrench
9
Flat Washers (2)
Bracket Bolts (2)
Spring Washers (2)

Spark Deflector
LED Light Switch
KNOW YOUR BENCH GRINDER
TOOL PURPOSE
Sharpen bits, drill bits, chisels, gouges, and other cutting tools all with your WEN Bench Grinder. Refer to the fol-
lowing diagrams to become familiarized with all the parts and controls of your bench grinder. The components will
be referred to later in the manual for assembly and operation instructions.
Wheel Guard
Grinding Wheel
60 Grit
Left Work Rest
(Grooved)
Coolant Tray
Eye Shield
Grinding Wheel
36 Grit
Right Work Rest
ON / OFF Switch
10

12
A - Work rest (right)
B - Work rest, grooved (left)
C - Work rest bracket (left)
D - Work rest bracket (right)
E - Philips screw
F - Spark deflector with LED assembly (left)
G - Spark deflector with LED assembly (right)
H - Eye shield
-
Fig. 3 LOOSE PARTS
D
I Eye shield lock knob- Work rest knob
J - Bolt
K - Bracket konb
L - Coolant tray
M - Lock washer
N Flat washer -
O -
P
Q
- Flat washer
Batteries AAA
A
B
C
Q
E
F
H
G0
L
Fig. 5
Fig. 4
A Spark deflector with LED assembly
B - Philips Screw
A
A - Spark shield knob
B - Spark shield with eyeshield
C - Spark deflector with LED assembly
D - Bolt
B
A
D
C
B
I
K
M
N
NM
K
P
P
J
12
A - Work rest (right)
B - Work rest, grooved (left)
C - Work rest bracket (left)
D - Work rest bracket (right)
E - Philips screw
F - Spark deflector with LED assembly (left)
G - Spark deflector with LED assembly (right)
H - Eye shield
-
Fig. 3 LOOSE PARTS
D
I Eye shield lock knob- Work rest knob
J - Bolt
K - Bracket konb
L - Coolant tray
M - Lock washer
N Flat washer -
O -
P
Q
- Flat washer
Batteries AAA
A
B
C
Q
E
F
H
G0
L
Fig. 5
Fig. 4
A Spark deflector with LED assembly
B - Philips Screw
A
A - Spark shield knob
B - Spark shield with eyeshield
C - Spark deflector with LED assembly
D - Bolt
B
A
D
C
B
I
K
M
N
NM
K
P
P
J
12
A - Work rest (right)
B - Work rest, grooved (left)
C - Work rest bracket (left)
D - Work rest bracket (right)
E - Philips screw
F - Spark deflector with LED assembly (left)
G - Spark deflector with LED assembly (right)
H - Eye shield
-
Fig. 3
LOOSE PARTS
D
I Eye shield lock knob-
Work rest knob
J - Bolt
K - Bracket konb
L - Coolant tray
M - Lock washer
N Flat washer -
O -
P
Q
- Flat washer
Batteries AAA
A
B
C
Q
E
F
H
G0
L
Fig. 5
Fig. 4
A Spark deflector with LED assembly
B - Philips Screw
A
A - Spark shield knob
B - Spark shield with eyeshield
C - Spark deflector with LED assembly
D - Bolt
B
A
D
C
B
I
K
M
N
NM
K
P
P
J
12
A - Work rest (right)
B - Work rest, grooved (left)
C - Work rest bracket (left)
D - Work rest bracket (right)
E - Philips screw
F - Spark deflector with LED assembly (left)
G - Spark deflector with LED assembly (right)
H - Eye shield
-
Fig. 3
LOOSE PARTS
D
I Eye shield lock knob-
Work rest knob
J - Bolt
K - Bracket konb
L - Coolant tray
M - Lock washer
N Flat washer -
O -
P
Q
- Flat washer
Batteries AAA
A
B
C
Q
E
F
H
G0
L
Fig. 5
Fig. 4
A Spark deflector with LED assembly
B - Philips Screw
A
A - Spark shield knob
B - Spark shield with eyeshield
C - Spark deflector with LED assembly
D - Bolt
B
A
D
C
B
I
K
M
N
NM
K
P
P
J
12
A - Work rest (right)
B - Work rest, grooved (left)
C - Work rest bracket (left)
D - Work rest bracket (right)
E - Philips screw
F - Spark deflector with LED assembly (left)
G - Spark deflector with LED assembly (right)
H - Eye shield
-
Fig. 3 LOOSE PARTS
D
I Eye shield lock knob-
Work rest knob
J - Bolt
K - Bracket konb
L - Coolant tray
M - Lock washer
N Flat washer -
O -
P
Q
- Flat washer
Batteries AAA
A
B
C
Q
E
F
H
G0
L
Fig. 5
Fig. 4
A Spark deflector with LED assembly
B - Philips Screw
A
A - Spark shield knob
B - Spark shield with eyeshield
C - Spark deflector with LED assembly
D - Bolt
B
A
D
C
B
I
K
M
N
NM
K
P
P
J
12
A - Work rest (right)
B - Work rest, grooved (left)
C - Work rest bracket (left)
D - Work rest bracket (right)
E - Philips screw
F - Spark deflector with LED assembly (left)
G - Spark deflector with LED assembly (right)
H - Eye shield
-
Fig. 3 LOOSE PARTS
D
I Eye shield lock knob-
Work rest knob
J - Bolt
K - Bracket konb
L - Coolant tray
M - Lock washer
N Flat washer -
O -
P
Q
- Flat washer
Batteries AAA
A
B
C
Q
E
F
H
G0
L
Fig. 5
Fig. 4
A Spark deflector with LED assembly
B - Philips Screw
A
A - Spark shield knob
B - Spark shield with eyeshield
C - Spark deflector with LED assembly
D - Bolt
B
A
D
C
B
I
K
M
N
NM
K
P
P
J
MOUNTING THE SPARK DEFLECTORS (FIG. 1)
1. Position the spark deflector assembly (F) onto the wheel cover
with its lower edge about 1/16 of an inch from the grinding
wheel.
2. Mount the spark deflector assembly using two Phillips screws
(E), lock washers and flat washers from under the spark deflec-
tors plate. Tighten the screws securely using a Phillips screw-
driver.
3. Repeat the steps above for attaching the other spark deflector.
ATTACHING THE EYE SHIELDS (FIG. 2)
NOTE: The carriage bolt and knob used for mounting are pre-
installed on the eye shield. Remove them before installing on the
spark deflector assembly.
1. Place the eye shield (Fig. 2 - H) onto the spark deflector as-
sembly (Fig. 2 - G) and align the holes.
2. Insert the carriage bolt (Fig. 2 - J) through the holes of the
spark deflector (Fig. 2 - G) and eye shield (Fig. 2 - H). Tighten
with the eye shield knob (Fig. 2 - I).
3. Repeat the steps above for installing the other eye shield.
MOUNTING THE WORK RESTS (FIG. 3)
1. Install the wheel bracket (D):
From the outside of the wheel cover, insert the bracket bolt (Fig.
3 - S) through the wheel cover hole and the lower slot of the
work rest bracket (Fig. 3 - D). Secure it with the flat washer (Fig.
3 - N), lock washer (Fig. 3 - M) and bracket knob (Fig. 3 - K).
Tighten the knob.
2. Install the work rest (Fig. 3 - A):
Install the work rest on the inside of the wheel cover by inserting
the work rest screw through the flat washer (Fig. 3 - P), the work
rest (Fig. 3 - A), the upper slot of the work rest bracket and the
wheel cover. Tighten the knob.
3. Repeat the steps above to install the other work rest.
NOTE: Adjust the distance between the wheel and the work rest
to maintain 1/16 in. or less separation as the diameter of the
wheel decreases with use.
ASSEMBLY & ADJUSTMENTS
WARNING! Do not connect to power supply until assembly is complete. Failure to comply could result in
accidental starting and personal injury.
F
E
Fig. 1
G
H
K
MN
D
S
P
Q
A
Fig. 3
11
Fig. 2
J
I

13
E
F
A
C
D
B
Fig. 6
A - Work rest (right)
B - Washer
C - Star washer
D - Work rest bracket
E - Work rest knob
F - Bracket knob
G - Pin
H - Carriage bolt
I - Washer
Fig. 7
A - Battery cover
B - Batteries AAA
A
B
Fig. 8
Fig. 9
A - Bolt
B - Washers
C - Lock washer
D - Hex nut
D
C
B
A
B
A - Coolant tray bracket
B - Coolant tray
A
B
GH
I
13
E
F
A
C
D
B
Fig. 6
A - Work rest (right)
B - Washer
C - Star washer
D - Work rest bracket
E - Work rest knob
F - Bracket knob
G - Pin
H - Carriage bolt
I - Washer
Fig. 7
A - Battery cover
B - Batteries AAA
A
B
Fig. 8
Fig. 9
A - Bolt
B - Washers
C - Lock washer
D - Hex nut
D
C
B
A
B
A - Coolant tray bracket
B - Coolant tray
A
B
GH
I
13
E
F
A
C
D
B
Fig. 6
A - Work rest (right)
B - Washer
C - Star washer
D - Work rest bracket
E - Work rest knob
F - Bracket knob
G - Pin
H - Carriage bolt
I - Washer
Fig. 7
A - Battery cover
B - Batteries AAA
A
B
Fig. 8
Fig. 9
A - Bolt
B - Washers
C - Lock washer
D - Hex nut
D
C
B
A
B
A - Coolant tray bracket
B - Coolant tray
A
B
GH
I
INSTALLING THE COOLANT TRAY (FIG. 4)
Place the coolant tray (Fig. 4 - L) over the coolant tray bracket
then firmly push tray down onto the bracket to secure it in place.
INSTALLING THE LED BATTERIES (FIG. 5 & 6)
1. The LED light switch is on top of the spark shield assembly.
Make sure that the LED button has been pushed to the OFF posi-
tion when installing batteries.
2. Remove the battery covers from the top of the LED assem-
blies.
3. Install the AAA batteries (O) inside the battery compartments
according to the polarity indicators, then replace the battery
covers.
4. Repeat the steps above for the other LED light.
MOUNTING TO THE WORK SURFACE (FIG. 7)
The bench grinder should be firmly attached to a reliable work
surface using mounting hardware (not included) installed
through the mounting holes on the base of the grinder. This
will prevent the bench grinder from vibration, walking or tipping
during operation.
NOTE: This bench grinder is compatible with the WEN 4288
Cast Iron Bench Grinder Pedestal Stand.
1. Prepare 1/4 in. bolts, flat washers, lock washers and hex nuts
(not included). The bolt length should be 1-1/2 in. longer than
the thickness of the workbench.
2. Locate and mark the holes where the grinder is to be mounted
onto the work surface.
NOTE: If mounting to a work bench, drill two 3/8 in. diameter
holes through the workbench.
3. Place the bench grinder onto the workbench, aligning holes in
base with holes in the workbench.
4. Insert two 1/4 in. diameter bolts and washers and attach with
nuts securely.
ASSEMBLY & ADJUSTMENTS
WARNING! Always make sure your bench grinder is se-
curely mounted to a workbench. Failure to do so could result
in an accident resulting in possible serious personal injury.
L
Coolant Bracket
Fig. 4
14
Fig. 10 Fig. 13
Fig. 14
Fig. 11
A - On/Off switch
A
Fig. 12
A - Work rest
A
C
A
B
A - Vise
B - Lawn mower blade
C - Screwdriver
A
A
CHISEL SHARPENING
A - LED light switch
LED Switch Fig. 5
Battery Cover
O
Fig. 6
Fig. 7
Bolt
Washer
Washer
Hex Nut
Lock Washer
12

14
Fig. 10 Fig. 13
Fig. 14
Fig. 11
A - On/Off switch
A
Fig. 12
A - Work rest
A
C
A
B
A - Vise
B - Lawn mower blade
C - Screwdriver
A
A
CHISEL SHARPENING
A - LED light switch
USING THE COOLANT TRAY (FIG. 8)
The coolant tray allows you to cool overheated workpieces. Fill
the tray half way with water or appropriate coolant before opera-
tion.
Periodically empty out the coolant tray. Rinse it of any metal
filaments and refill it with clean water to prevent buildup on the
wheel itself. Your cleaning schedule should depend on frequen-
cy of use.
BASIC OPERATION
1. To operate the bench grinder, always wear safety glasses and
stand to the side of the grinder (as opposed to in front) before
turning the tool on.
2. Turn the On/Off switch to “I”. Once the tool is up and running,
allow it to reach full speed before grinding. This will take about
15 seconds (Fig. 9).
3. Hold the work piece firmly against the tool rest. Hold very
small pieces with pliers or other suitable clamps.
4. Choose the suitable grinding wheel for you operation. The 60-
grit wheel is good for small material removal and sharpening.
The 36-grit wheel is good for rapid material removal and tool
reshaping.
OPERATION
WARNING! Always wear eye protection with side shields marked to comply with ANSI Z87.1. Failure to do
so could result in objects being thrown into your eyes resulting in possible serious injury.
Fig. 8
Fig. 9
Switch
Coolant
Tray
5. Feed the work piece smoothly and evenly into the grinding wheel. Move the workpiece back and forth at an even
pace to make for even grinding and prevent burning any one area of the surface.
NOTE: Sparks are normal during grinding operations. Protect yourself and the surrounding environment from flying
sparks.
6. Move the work piece slowly and avoid forcing the workpiece against the grinding wheel. If the wheel tends to
slow down from excessive force, you should occasionally release the pressure to let the wheel return to full speed.
NOTE: Excessive pressure may damage the tool, cause the motor to overheat, and prematurely wear down the
grinding wheel.
7. Grind only on the face of the grinding wheel; never on the side of it.
8. Regularly place the hot end of the workpiece into the coolant tray to cool it off.
9. Turn the ON/OFF switch to “O”. The wheels will take about 3 minutes and 20 seconds to come to a full stop. Avoid
contact with the bench grinder’s housing until it has stopped and cooled down completely. Unplug the tool from the
power source.
13

14
Fig. 10 Fig. 13
Fig. 14
Fig. 11
A - On/Off switch
A
Fig. 12
A - Work rest
A
C
A
B
A - Vise
B - Lawn mower blade
C - Screwdriver
A
A
CHISEL SHARPENING
A - LED light switch
Lawn mower
blade
14
Fig. 10 Fig. 13
Fig. 14
Fig. 11
A - On/Off switch
A
Fig. 12
A - Work rest
A
C
A
B
A - Vise
B - Lawn mower blade
C - Screwdriver
A
A
CHISEL SHARPENING
A - LED light switch
14
Fig. 10 Fig. 13
Fig. 14
Fig. 11
A - On/Off switch
A
Fig. 12
A - Work rest
A
C
A
B
A - Vise
B - Lawn mower blade
C - Screwdriver
A
A
CHISEL SHARPENING
A - LED light switch
SHARPENING LAWN MOWER BLADES (FIG. 10)
Lawn mower blades are usually sharpened on only one edge
and dressed up slightly on the other. Perform this sharpening
process on both cutting ends of the blade.
After sharpening, be sure to balance the blade by removing
additional material from the heavy end. Unbalanced blades can
cause serious crank shaft damage to your lawn mower. There
are a number of inexpensive cone balancers on the market for
this purpose. Alternatively, you can balance the blade using a
screwdriver that is secured onto a vise as shown.
NOTE: Always remove spark plug wires or battery from the
mower before servicing the blades to prevent accidental start-
ups.
SHARPENING CHISELS &
FLATHEAD SCREWDRIVERS (FIG. 11)
The end of a properly sharpened chisel or screwdriver will be
a perfectly flat rectangle, perpendicular to the center line of the
shank. The two sides and two faces will taper outward from
the end. Hold each face of the screwdriver against the wheel
to true it up, then ease the end straight into the stone to grind
it true.
SHARPENING DRILL BITS (FIG. 12)
Use the grooved work rest to provide angled support to drill
bits during grinding operation. The angled groove running
through the work rest allows for a cradle for drill bits during
sharpening operations.
For better sharpening results, you can use a sharpening jig
(available at most hardware stores). Begin on one side of the
point at the existing angle, then twist the bit while maintaining
contact with the grinding surface. Sharpen only the tip of the
drill bit.
SHARPENING KNIVES
Working from the heavy end of the blade towards the tip to
remove metal from both faces of the knife.
SHARPENING SCISSORS
If possible, take the scissors apart to make the sharpening op-
eration easier and safer. Remove material only from the out-
side surface and work from the heavy end of the blade toward
the tip.
OPERATION
Vise
Screwdriver
Fig. 10
Fig. 11
Grooved Work Rest
Fig. 12
14

GENERAL CLEANING AND MAINTENANCE
1. Regularly check the tool and use a soft brush to remove accumulated dust. Wear safety goggles to protect your
eyes while cleaning.
2. If the body of the grinder needs cleaning, wipe it down with a soft, damp cloth. A mild detergent can be used.
Do not use alcohol, petrol or other similar cleaning agents. Do not make contact with the grinding wheels with any
damp cloth.
MAINTENANCE
WARNING! For your own safety, turn the switch OFF and remove the plug from the electrical outlet before
adjusting or performing maintenance inspection work on the bench grinder.
WARNING! Do not at any time let brake fluids, gasoline, petroleum based products, penetrating oils, etc.,
come in contact with plastic parts. Chemicals can damage, weaken or destroy plastic which could result in seri-
ous personal injury.
3. Always make sure the eye shields are transparent and not blocking the view of the grinding wheel.
4. All of the bearings in this tool are lubricated with sufficient amount of high grade lubricant for the life of the unit
under normal operating conditions. Therefore, no additional lubrication is required.
POWER CORD REPLACEMENT
If replacement of the power supply cord is necessary, this must be done by an authorized service center in order to
avoid a safety hazard.
CHANGING THE GRINDING WHEEL (FIG. 13)
In normal use, grinding wheels may become cracked, grooved, rounded at the edges, chipped, out of true or loaded
with foreign material. Grinding wheels should be inspected before each use. Cracked wheels should be replaced
immediately. Any of the other conditions can be remedied with a dressing tool (not included).
To replace a grinding wheel:
1. Ensure that the machine is powered off and unplugged.
2. Loosen the bracket knob and remove the work rest bracket assembly from the wheel cover. Repeat for the other
side.
3. Using a Phillips head screwdriver, remove the two remaining bolts and nuts from the wheel cover. Repeat for the
other side.
4. Using two 24 mm wrenches, loosen the arbor hex nut found on the outside edge of the grinding wheel. The left
side hex nut is loosened by using a clockwise wrench rotation while the right side hex nut is loosened with a coun-
terclockwise rotation.
If you are having difficulty with the two-wrench method, you may try holding one wheel while loosening the nut.
Wear gloves if you decide to use this method to avoid scraping your hand or fingers. Remove the arbor hex nut and
outer wheel flange.
15

MAINTENANCE
15
Fig. 15
A - Screw
B - Wheel guard cover
C - Wheel nut
D - Outer flange
E - Grinding wheel
F - Flange nut
G - Inner flange
H - Spindle shaft
A
B
CD
E
F
GH
Fig. 13
Wheel Cover
Grinding Wheel
Hex Nut Outer Flange Inner Flange Arbor Spindle
CHANGING THE GRINDING WHEEL (CONT.) (FIG. 13)
5. Replace the grinding wheel with a new grinding wheel that has a speed rating higher than 3450 RPM. The outer
diamter of the wheel should be 8 inches and the arbor size should be 5/8 of an inch. Do not remove labels from the
grinding wheels.
6. Once the wheel has been replaced, re-attach the outer flange and the arbor hex nut.
Caution: Do not overtighten the nut, or use an impact driver to tighten. This can cause damage to the grinding
wheels, which could cause personal injury.
7. Replace the wheel cover and secure with the bolts and knobs. Replace the work rest assemblies. Make sure all
guards, shields and work rests are correctly positioned before operation.
USING A WIRE OR BUFFING WHEEL
A wire or buffing wheel can be installed onto either side of the grinder as needed. The WEN 858WW 8-Inch Crimped
Benchtop Steel Wire Wheel is compatible with your bench grinder. Accessories and replacement parts can be pur-
chased on wenproducts.com.
More spacers may be required when using wire wheels, depending on the wheel’s thickness. NOTE: The first spacer
should always go onto the arbor shaft, between the innermost wheel flange and the body of the grinder. If needed, a
second spacer should go between the outermost wheel flange and the arbor hex nut. Always use the included wheel
flanges even if using a wire or a buffing wheel.
STORAGE
Store the bench grinder and the grinding wheels to prevent them from the potential hazards of moisture, contain-
ments and other damage.
16

EXPLODED VIEW & PARTS LIST
NOTE: Not all parts may be available for purchase. Parts and accessories that wear down over the course of
normal use are not covered under the warranty.
17

No. Part No. Description Qty.
1 4286-001 M5x48 Screw 4
2 4286-003 Left wheel guard cover 1
3 4286-004 M16 I type hex nut 1
4 4282-004 Flange 4
5 4282-005 60# Grinding
Wheelɸ200×25×ɸ15.88 1
6 4276-013 M5x10 Screw 6
7 4282-007 Left wheel guard plate 1
8 4282-008 M5x8 Screw 4
9 4282-009 Eyeshield support 2
10 4282-010 M5x60 Bolt 2
11 4282-011 Locking knob 4
12 4282-012 Lamp assembly 2
13 4282-013 Battery 4
14 4282-014 Washer 2
15 4282-015 Eyeshield 2
16 4282-016 M5x55 Bolt 2
17 4276-008 M5 Hex nut 4
18 4282-018 Motor 1
19 4282-019 Right wheel guard plate 1
20 4282-020 Shaft bushing 1
21 4282-021 36# Grinding
wheelɸ200×25×ɸ15.9 1
22 4286-056 M16 I type hex nut 1
23 4286-057 Right wheel guard cover 1
24 4286-002 M5x51 Bolt 2
25 4286-019 Left fixing work rest 1
26 4286-020 ɸ5 Big flat washer 2
No. Part No. Description Qty.
27 4282-027 ɸ5 Toothed locking washer 2
28 4282-028 M5 Locking nut 2
29 4286-022 Left movable work rest 1
30 4286-014 ɸ6 Flat Washer 2
31 4282-031 M6×17 Tool rest locking
knob 2
32 4276-043 Power cord with plug 1
33 4276-041 Cord clamp 1
34 4282-034 ɸ8 Spring washer 2
35 4282-035 M8×20 Hex bolt 2
36 4282-036 25UF/300V Capacitor 1
37 4276-033 M4x8 Screw 2
38 4282-038 Bottom plate 1
39 4286-038 Rubber feet 4
40 4286-039 M5x16 Screw 4
41 4276-024 ɸ4 Toothed locking washer 2
42 4282-042 Cord bushing 1
43 4286-052 Right movable work rest 1
44 4286-053 Right fixing work rest 1
45 4282-045 Base 1
46 4282-046 Switch plate 1
47 4282-047 M4x8 Screw 4
48 4282-048 Switch 1
49 4282-049 Coolent tray clamp 1
50 4282-050 Coolent tray 1
51 4282-051 Battery cover 2
52 4282-052 Lamp cover 2
53 4282-053 ST2.9X8 Screw 4
EXPLODED VIEW & PARTS LIST
NOTE: Not all parts may be available for purchase. Parts and accessories that wear down over the course of
normal use are not covered under the warranty.
18

WARRANTY STATEMENT
WEN Products is committed to building tools that are dependable for years. Our warranties are consistent with this
commitment and our dedication to qualit
y.
LIMITED WARRANTY OF WEN PRODUCTS FOR HOME USE
GRE
AT LAKES TECHNOLOGIES, LLC (“Seller”) warrants to the original purchaser only, that all WEN
consumer
power tools will be free from defects in material or workmanship during personal use for a period of two (2) years
used
for professional or commercial use. Purchaser has 30 days from the date of purchase to report missing or
damaged parts.
SELLER’S
SOLE OBLIGATION AND YOUR EXCLUSIVE REMEDY under this Limited Warranty and, to the extent per-
mitted
by law, any warranty or condition implied by law, shall be the replacement of parts, without charge, which a
re
defective
in material or workmanship and which have not been subjected to misuse, alteration, careless handling,
misrepai
r, abuse, neglect, normal wear and tear,
improper maintenance, or other conditions adversely affecting the
Product
or the component of the Product, whether by accident or intentionally, by persons other than Seller. To
make
a claim under this Limited Warranty, you must make sure to keep a copy of your proof of purchase that
clearly
-
dor
of Great Lakes Technologies, LLC. Purchasing through third party vendors, including but not limited to garage
sales,
pawn shops, resale shops, or any other secondhand merchant, voids the warranty included with this
product.
Contact [email protected] or 1-800-232-1195 with the following information to make arrangements:
your
shipping address, phone number, serial number, required part numbers, and proof of purchase. Damaged
or
defective parts and products may need to be sent to WEN before the replacements can be shipped out.
-
turning
a product for warranty service, the shipping charges must be prepaid by the purchaser. The product
must
be
shipped in its original container (or an equivalent), properly packed to withstand the hazards of shipment. The
product
must be fully insured with a copy of the proof of purchase enclosed. There must also be a description of
the
will be returned and shipped back to the pur
chaser at no charge for addresses within the contiguous United States.
THIS
LIMITED WARRANTY DOES NOT APPLY TO ITEMS THAT WEAR OUT FROM REGULAR USAGE OVER TIME,
INCLUDING
BELTS, BRUSHES, BLADES, BATTERIES, ETC. ANY IMPLIED WARRANTIES SHALL BE LIMITED IN
DUR
ATION TO TWO (2) YEARS FROM DATE OF PURCHASE. SOME STATES IN THE U.S. AND SOME CANADIAN
PROVINCES
DO NOT ALLOW LIMITATIONS ON HOW LONG AN IMPLIED WARRANTY LASTS, SO THE ABOVE LIMI-
TAT
ION MAY NOT APPLY TO YOU.
IN
NO EVENT SHALL SELLER BE LIABLE FOR ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES (INCLUDING
BUT
NOT LIMITED TO LIABILITY FOR LOSS OF PROFITS) ARISING FROM THE SALE OR USE OF THIS PRODUCT.
SOME ST
ATES IN THE U.S. AND SOME CANADIAN PROVINCES DO NOT ALLOW THE EXCLUSION OR LIMITAT
ION
OF
INCIDENTAL OR CONSEQUENTIAL DAMAGES, SO THE ABOVE LIMITATION OR EXCLUSION MAY NOT APPLY
TO YOU.
THIS
LIMITED WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS, AND YOU MAY ALSO HAVE OTHER RIGHTS
WHICH
VARY FROM STATE TO STATE IN THE U.S., PROVINCE TO PROVINCE IN CANADA AND FROM COUNTRY
TO COUNT
RY.
THIS
LIMITED WARRANTY APPLIES ONLY TO ITEMS SOLD WITHIN THE UNITED STATES OF AMERICA, CANA-
DA
AND THE COMMONWEALTH OF PUERTO RICO. FOR WARRANTY COVERAGE WITHIN OTHER
COUNTRIES,
CONT
ACT THE WEN CUSTOMER SUPPORT LINE. FOR WARRANTY PARTS OR PRODUCTS REPAIRED UNDER
W
ARRANTY SHIPPING TO ADDRESSES OUTSIDE OF THE CONTIGUOUS UNITED STATES, ADDITIONAL
SHIPPING
CHARGES MAY APPLY.
19

THANKS FOR
REMEMBERING
V. 2021.06.14