WEN 4286 User Manual





CONTENTS

Technical data…..……………………………………………………….. 2
General safety rules…….……………………………………………….. 3
Specific safety rules for bench grinder..………………………………… 5
Electrical information…………………………………………………... 7
Know your bench grinder……………………………………………….. 9
Assembly………………………………………………………………… 10
Operation………………………………………………………………... 11
Maintenance…………………………………………………………….. 12
Troubleshooting…………………………………………………………. 13
Exploded view…………………………………………………………… 14
Parts list………………………………………………………………… 15
Warranty………………………………………………………………… 16

TECHNICAL DATA

8" Slow Speed Bench Grinder

Model: 4286

Motor: 120 V, 60 Hz, 3A
Speed: 1750 RPM (no load)
Wheel size: 8"x1"
Arbor size: 5/8"
Wheel Grits: #120 (Fine) / #60 (Medium)

Weight: 36 lb

2

GENERAL SAFETY RULES

GENERAL SAFETY INSTRUCTIONS

Operating a bench grinder can be dangerous if safety and common sense are ignored. The operator must be
familiar with the operation of the tool. Read this manual to understand this bench grinder. DO NOT operate
this bench grinder if you do not fully understand the limitations of this tool. DO NOT modify this bench
grinder in any way.

BEFORE USING THE BENCH GRINDER

WARNING: To avoid serious injury and damage to the tool, read and follow all of the Safety and

Operating Instructions before operating the bench grinder.

WARNING:

1. SOME DUST created by using power tools 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, 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.

2. READ the entire owner’s manual. LEARN how to use the tool for its intended applications.

3. GROUND ALL TOOLS. If the tool is supplied with a three-prong plug, it must be plugged into a

three-contact electrical receptacle. The third prong is used to ground the tool and provide protection
against accidental electric shock. DO NOT remove the third prong.

4. AVOID A DANGEROUS WORKING ENVIRONMENT. DO NOT use electrical tools in a damp

environment or expose them to rain.

5. DO NOT use electrical tools in the presence of flammable liquids or gasses.

6. ALWAYS keep the work area clean, well lit, and organized. DO NOT work in an environment with floor

surfaces that are slippery from debris, grease, and wax.

7. KEEP VISITORS AND CHILDREN AWAY. DO NOT permit people to be in the immediate work

area, especially when operating the electrical tool.

8. DO NOT FORCE THE TOOL to perform an operation for which it was not designed. The tool will do

a safer and higher quality job by only performing operations for which it was intended.

9. WEAR PROPER CLOTHING. DO NOT wear loose clothing, gloves, neckties, or jewelry. These

items can get caught in the machine during operations and pull the operator into the moving parts.
Longhaired users must wear a protective cover on their hair to prevent it from contacting any moving
parts.

10. CHILDPROOF THE WORKSHOP AREA by removing switch keys, unplugging tools from the

electrical receptacles, and using padlocks.

11. DO NOT use electrical tools in the presence of flammable liquids or gasses.

3

12. ALWAYS UNPLUG THE TOOL FROM THE ELECTRICAL RECEPTACLE when making

adjustments, changing parts, or performing maintenance.

13. KEEP PROTECTIVE GUARDS IN PLACE AND IN WORKING ORDER.

14. AVOID ACCIDENTAL STARTING. Make sure that the power switch is in the OFF position before

plugging in the power cord to the electrical receptacle.

15. REMOVE ALL MAINTENANCE TOOLS from the immediate area prior to turning

on the Bench Grinder.

16. USE ONLY RECOMMENDED ACCESSORIES. Use of incorrect or improper

accessories could cause serious injury to the operator and damage to the tool. When in doubt, check the
instruction manual that comes with that particular accessory.

17. NEVER LEAVE A RUNNING TOOL UNATTENDED. Turn the power switch to the OFF position.

Do not leave the tool until it has come to a complete stop.

18. DO NOT STAND ON A TOOL. Serious injury could result if the tool tips over or you accidentally

contact the tool.

19. DO NOT store anything above or near the tool to ensure that no one stands on the tool for better reach.

20. MAINTAIN YOUR BALANCE. DO NOT extend yourself over the tool. Wear oil resistant rubber

soled shoes. Keep floor clear of debris, grease, and wax.

21. MAINTAIN TOOLS WITH CARE. Always keep tools clean and in good working order. Keep all

blades and tool bits sharp.

22. EACH AND EVERY TIME, CHECK FOR DAMAGED PARTS PRIOR TO USING THE TOOL.

Carefully check all guards to see that they are not damaged and properly performing their intended
functions. Check for alignment, binding, or breaking of moving parts. A guard or other part that is
damaged should be immediately repaired or replaced.

23. CHILDPROOF THE WORKSHOP AREA by removing switch keys, unplugging tools from the

electrical receptacles, and using padlocks.

24. SECURE ALL WORK. Use clamps or jigs to secure the workpiece. This is safer than attempting to hold

the workpiece with your hands.

25. STAY ALERT! WATCH WHAT YOU ARE DOING AND USE COMMON SENSE WHEN

OPERATING A POWER TOOL. DO NOT USE A TOOL WHILE TIRED OR UNDER THE
INFLUENCE OF DRUGS, ALCOHOL, OR MEDICATION. A moment of inattention while

operating power tools may result in serious personal injury.

26. ALWAYS WEAR A DUST MASK TO PREVENT INHALING DANGEROUS DUST OR

AIRBORNE PARTICLES including wood dust, crystalline silica dust and asbestos dust. Direct
particles away from face and body. Always operate tool in a well-ventilated area and provide for proper
dust removal. Use dust collection system wherever possible. Exposure to dust may cause serious and
permanent respiratory damage or other injury, including silicosis (a serious lung disease), cancer, and
death. Avoid breathing and prolonged contact with dust. Allowing dust to get into your mouth, eyes, or
onto your skin may result in absorption of harmful material. Always use properly fitting
NIOSH/OSHA-approved respiratory protection for dust exposure. Wash exposed areas with soap and
water.

27. USE SAFETY GOGGLES AT ALL TIMES that comply with ANSI Z87.1. Normal safety glasses only

have impact resistant lenses and are not designed for safety. Wear a face or dust mask when working in a
dusty environment. Use ear protection, such as plugs or muffs, during extended periods of operation.

4

SPECIFIC SAFETY RULES FOR BENCH GRINDER

1. USE GRINDING WHEELS suitable for the speeds of the grinder.

2. STAND BESIDE the bench grinder during start-up, not directly in front.

3. DO NOT REMOVE THE WHEEL GUARD.

4. DO NOT USE THE GRINDING WHEEL TO CUT ANYTHING.

5. DO NOT USE ANYTHING TO STRESS THE GRINDING WHEEL.

6. USE A GRINDING WHEEL DRESSING TOOL to shape or remove glaze from grinding wheels.

7. ADJUST DISTANCE between wheel and tool rest to maintain at most a 1/8-inch (3.2 mm) separation as

the diameter of the wheel decreases with usage.

8. CONNECT TO A SUPPLY CIRCUIT protected by a circuit breaker or time-delay fuse.

9. SECURE THE BENCH GRINDER to its supporting surface to prevent the grinder from tipping over,

sliding, or walking on its supporting surface.

• Replace a cracked wheel immediately.

• Always use the guards and eye shields.

• Do not overtighten the wheel nut.

• Use only flanges furnished with this grinder.

10. ALWAYS INSPECT GRINDING WHEELS prior to use for cracks, missing pieces, etc. Replace

wheel immediately before use if imperfections are present.

11. USE ONLY GRINDING WHEELS that comply with ANSI B7.1 and rated greater than 3550 RPM.

12. GUARD AGAINST ELECTRICAL SHOCK by preventing body contact with grounded surfaces. For

example: pipes, radiators, ranges, refrigerator enclosures.

13. DO NOT use wheels with incorrect size holes. NEVER use wheel washers or wheel screws that are

defective or incorrect, and NEVER touch a grinding wheel or other moving parts.

14. 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.

15. 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.

16. NEVER stand or have any part of your body in line with the path of the wheel.

17. DO NOT USE TOOL IF SWITCH DOES NOT TURN IT ON AND OFF. Have defective switches

replaced by an authorized service center.

5