226002
8-INCH
BENCH GRINDER
WITH LED LIGHTS
For replacement parts visit
WENPRODUCTS.COM
Model # 4282
bit.ly/WENvideo
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 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 at:
800-232-1195
(M-F 8AM-5PM CST)
techsupport@wenproducts.com
WENPRODUCTS.COM
TABLE OF CONTENTS
Technical Data
General Safety Rules
Specific Safety Rules For Bench Grinders
Electrical Information
Unpacking
Know Your Bench Grinder
Assembly
Operation
Maintenance
Exploded View & Parts List
Warranty
TECHNICAL DATA
Model Number:
Motor:
Wheel Speed:
Grinding Wheel Size:
Arbor Size:
Wheel Grits:
Net Weight:
Product Dimensions:
#60 (Medium Grit, Left Wheel)
#36 (Coarse Grit, Right Wheel)
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5
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4282
120V, 60 Hz, 4.8A
3450 RPM (no load)
8 in. x 1 in.
5/8 in.
30.5 pounds
14 x 10 x 11.75 inches
Compatible with:
• WEN 4288 Cast Iron Bench Grinder Pedestal Stand
• WEN 858WW 8-Inch Crimped Benchtop Steel Wire Wheel
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GENERAL SAFETY RULES
Safety is a combination of common sense, staying alert and knowing how your item works.
SAVE THESE SAFETY INSTRUCTIONS.
WARNING! Read all safety warnings and all instructions. Failure to follow the warnings and instruc-
tions may result in electric shock, fire and serious injury. To avoid mistakes and serious injury, do not
plug in your tool until the following steps have been read and understood.
WORK AREA SAFETY
1. Keep work area clean and well lit. Cluttered or dark areas invite accidents. Do not work on floor surfaces that are
slippery with sawdust or wax. Keep the ground clear of tripping hazards.
2. Do not operate power tools in explosive atmospheres, such as in the presence of flammable liquids, gases or dust.
Power tools create sparks which may ignite the dust or fumes.
3. Keep bystanders at a safe distance from the work area. Never allow children or pets near the tool.
ELECTRICAL SAFETY
1. Do not expose power tools to rain or wet conditions. Water entering a power tool will increase the risk of electric
shock.
2. Power tool plugs must match the outlet. Never modify the plug in any way. Modified plugs with non-matching
outlets will increase the risk of electric shock.
3. Check all power supplies periodically. Do not use defective cords. Damaged or entangled cords increase the risk
of electric shock. Never use the cord for carrying, pulling or unplugging the power tool. Keep cord away from heat,
oil, sharp edges or moving parts.
PERSONAL SAFETY
1. Stay alert. Watch what you are doing and use common 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 inattention while operating power tools may result in serious personal injury.
2. Do not wear loose clothing, gloves, neckties, or jewelry (rings, watches, etc.) when operating the tool. Inappropriate clothing and items can get caught in moving parts and draw you in. Always wear non-slip footwear and tie back
long hair.
3. Use personal protective equipment. Always wear safety goggles at all times that comply with ANSI Z87.1. Use ear
protection such as plugs or muffs during extended periods of operation. Wear work gloves to protect your hands.
Wear a face mask or dust mask to fight the dust.
4. Keep proper footing and balance at all times and do not overreach when operating the power tool.
WARNING: Dust generated from certain materials can be hazardous to your health. Always operate
the tool in a well-ventilated area and wear a dust mask. Use dust collection systems when processing
wood and plastics. Dust extractors or dust bags must not be connected when processing metals.
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GENERAL SAFETY RULES
POWER TOOL USE AND CARE
1. Avoid accidental start-ups. Make sure the power switch is in the OFF position before connecting the plug to a
power source or carrying the tool.
2. Check power tool for damaged parts. Check for misalignment of moving parts, jamming, breakage, improper
mounting, or any other conditions that may affect the tool’s operation. Do not use the power tool if the switch does
not turn ON/OFF. Any part that is damaged should be properly repaired or replaced before use.
3. Do not force the tool to do a job for which it was not designed. Use the correct power tool and accessories and
follow the instructions for your application to prevent hazardous situations.
4. Remove adjustment tools. Always make sure all adjustment tools or wrenches are removed from the tool before
turning on the power tool.
5. Keep guards in place and in working order before operating the tool. All protection and safety devices must be
in place after completing repair and maintenance procedures.
6. Never leave a running tool unattended. Do not leave the tool until it has come to a complete stop.
POWER TOOL MAINTENANCE
1. Always disconnect the power cord plug from the electrical outlet when making adjustments, changing parts, or
storing power tools. Such preventive safety measures reduce the risk of starting the power tool accidentally.
2. Maintain power tools properly. Safely store power tools out of the reach of children. Always keep tools clean and
in good working order. Follow instructions for lubricating and changing accessories.
3. Only have your power tool serviced by a qualified repair person using only identical replacement parts. Use of
any other part can cause personal injury and damage to the tool.
CALIFORNIA PROPOSITION 65 WARNING
This product and some dust created by power sanding, sawing, grinding, drilling, and other construction activities
may contain chemicals, including lead, known to the State of California 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 exposure to these chemicals, work in a well-ventilated area with approved safety equipment such as dust masks specially designed to filter out microscopic particles.
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SPECIFIC RULES FOR BENCH GRINDERS
WARNING: Do not plug in or operate this tool until the entire manual has been read and understood.
Failure to do so may result in personal injury or machine damage.
1. Use only the correct grinding wheels that meet the following requirements:
• The speed rating of the wheel is greater than 3450 RPM.
• The wheel complies with ANSI B7.1.
• The size of the wheel is 8 inches in diameter and 1 inch thick with a 5/8-inch arbor. Do not use wheels
with incorrect arbor size.
2. Always inspect grinding wheels prior to use for cracks or missing pieces. If imperfections are present, replace
wheel immediately before use. Never use wheel washers or screws that are defective or incorrect.
3. Thoroughly inspect the grinder. Do not use the bench grinder if the flange nut or arbor hex nut is missing or if
the spindle shaft is bent. Use only flanges furnished with this bench grinder.
4. Never touch a grinding wheel or other moving parts during operation or immediately after use. It takes approximately 3 minutes for the wheels to come to a stop after the tool is switched off.
5. Do not overtighten the wheel nut. Do not use an impact wrench to make adjustments to the grinding wheel nuts,
as it could cause damage to the wheel, which could cause severe injury.
6. Risk of injury due to accidental starting. Do not use in an area where children may be present.
7. Always secure the bench grinder by bolting it down to its supporting surface to prevent the grinder from tipping
over, sliding, or walking during operation.
8. Do not remove the wheel guard, unless changing a grinding wheel. Ensure the cover is replaced before using the
grinder. Always use the guards, spark deflectors and eye shields during operation.
9. Check the ON/OFF switch of your tool. Do not use tool if switch does not turn it on and off. Have defective
switches replaced by an authorized service center.
10. Stand beside the bench grinder during start-up, not directly in front. Never stand or have any part of your body
in line with the path of the wheel.
11. Never start the grinder when the wheel is in contact with the workpiece.
12. Always hold the workpiece firmly against the work rest.
13. Always ease the workpiece against the abrasive wheel when starting to grind. A harsh impact can break the wheel.
Use light pressure when starting to grind. Too much pressure on a cold wheel can cause the wheel to crack.
14. Do not use the grinding wheel to cut anything.
15. Do not apply excess stress to the grinding wheel. Excessive pressure may damage the tool, cause the motor to
overheat, and prematurely wear down the grinding wheel.
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SPECIFIC RULES FOR THE BENCH GRINDER
16. New wheels may require dressing to make them round. Use a grinding wheel dressing tool (not included) to
shape or remove glaze from grinding wheels.
17. Keep the distance between the wheel and tool rest at most a 1/8-inch (3.2 mm) space. Adjust the work rest accordingly as the wheel grinds down to a smaller diameter with use over time.
18. Guard against electrical shock by preventing body contact with grounded surfaces. For example: pipes, radiators,
ranges, refrigerator enclosure, etc.
19. Never reach to pick up a workpiece, a piece of scrap, or anything else that is in or near the grinding path of the
wheel.
20. Avoid awkward operations and hand positions where a sudden slip could cause your hand to move into the
wheel. Always make sure you have good balance.
21. Do not turn the switch on and off rapidly. This could cause the wheel to loosen and create a hazard. Should this
ever occur, stand clear and allow the wheel to come to a complete stop. Disconnect your grinder from the power
supply and retighten the wheel nut securely.
22. Frequently clean grinding dust from beneath the grinder.
23. If any part of this grinder is missing, broken, bent, or damaged in any way, or if any electrical component fails to
perform properly, shut off the power switch, remove the machine plug from the power source and have the damaged, missing, or failed parts replaced before operation.
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