Wen 4286

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8-INCH SLOW SPEED

BENCH GRINDER

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.

IMPORTANT:

NEED HELP? CONTACT US!

Have product questions? Need technical support?

Please feel free to contact us at:

800-232-1195

techsupport@wenproducts.com

WENPRODUCTS.COM

Model # 4286

bit.ly/WENvideo

For replacement parts visit

WENPRODUCTS.COM

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Table of Contents

Other manuals for Wen 4286

Operator's Manual16 pages

Questions and Answers:

C
Cynthia GarrettAug 15, 2025
What to do if my Wen Grinder motor stalls and blows a fuse?
- T
  Todd ColeAug 16, 2025
  If the WEN Grinder motor stalls, causing a blown fuse or tripped circuit, there are several potential causes. First, check the motor connections for any loose connections, shorted terminals, or worn insulation. If found, send it for servicing. Second, address any voltage supply issues, which may stem from the extension cord or the power source itself. Third, ensure that you install the correct fuses or circuit breakers and plug the tool into an appropriate circuit that matches the fuse or breaker. Finally, reduce the load on the motor.
T
Taylor RamirezAug 19, 2025
How to fix a Wen 4286 when the motor won’t start?
- M
  Martin GriffinAug 19, 2025
  If your WEN Grinder's motor won’t start, it could be due to several reasons. First, ensure that the power source is providing the proper voltage. Second, inspect the motor for loose or open connections; if found, send it for servicing. Third, replace the fuse or reset the breaker.
K
keithtraciAug 22, 2025
Why won't my Wen Grinder start?
- C
  carlossavageAug 22, 2025
  Your Wen Grinder might not start due to several reasons: a blown line fuse or tripped circuit breaker (replace the fuse or reset the breaker), low line voltage (check and correct the power supply), material wedged between the wheel and guard (turn off the grinder and remove the material), a defective switch (replace the switch), or a defective, blown capacitor (replace the capacitor).
C
Carrie StoneAug 25, 2025
Why is my Wen Grinder motor getting too hot?
- S
  Sarah HowardAug 26, 2025
  If the motor of your WEN Grinder is getting too hot, it could be due to an overloaded motor. Try reducing the load. Another cause might be an extension cord that is either too long or not thick enough. Use an extension cord with the correct gauge and length, or try plugging the tool directly into the outlet if possible.
K
Kelly BurnsAug 28, 2025
Why is my Wen 4286 machine running too loud?
- J
  Jacqueline VillanuevaAug 28, 2025
  If your WEN Grinder machine runs too loud during operation, it is likely due to a lack of lubricating grease. Add lubricating grease to the gear.
J
joan23Aug 30, 2025
What causes a wavy surface on a workpiece with a Wen Grinder?
- A
  Angela MatthewsAug 30, 2025
  If you notice a wavy condition on the surface of a workpiece when using the WEN Grinder, there are a few things to check. Make sure the machine is securely positioned on a level surface. Also, ensure that the workpiece is held firmly in place, using a holding device if necessary. Finally, if the wheel face is uneven, dress the grinding wheel.
R
Robert BatesSep 2, 2025
How to improve stropping wheel performance on a Wen 4286?
- A
  ashleyraySep 2, 2025
  If the stropping wheel performance of your WEN Grinder decreases, it could be due to insufficient wheel preparation, such as a lack of oil and paste. Prepare the wheel. Alternatively, the wheel may be damaged, in which case you should change it out.
K
Karen JohnsonSep 5, 2025
What to do if my Wen Grinder keeps blowing fuses or tripping circuit breakers?
- A
  Andrew KleinSep 5, 2025
  If your Wen Grinder keeps blowing fuses or tripping circuit breakers, it could be due to overloading caused by binding (clean around the wheels and shaft, or replace the bearings), a defective plug (replace the plug), a defective cord (replace the cord), or a defective switch (replace the switch).
L
Linda SimsSep 8, 2025
Why is my Wen Grinder motor overheating?
- R
  Reginald HinesSep 8, 2025
  Your Wen Grinder motor may be overheating because of excessive pressure required to grind material (dress the wheel or replace it with one of proper grit), grinding on the side of the wheel (grind only on the face of the wheel), or the motor not turning freely (clean around the wheels and shaft and/or replace bearings).
R
rowlandcalebSep 12, 2025
How to fix excessive vibration in my Wen Grinder?
- M
  Mark MyersSep 12, 2025
  Excessive vibration in your Wen Grinder can be caused by improper mounting of the grinder or accessories (remount), a grinding wheel out of balance (dress or replace the wheels), or improper wheel mounting (remount the wheels, rotating one wheel 90º with respect to its previous position while the other wheel remains in its original position).

Wen 4286 Specifications

General

Arbor Size	5/8 inch
Speed	10, 000 RPM
Motor	6 Amps
Spindle Thread	5/8 inch
Wheel Diameter	6 inch
Weight	4.3 pounds

Summary

Technical Data

General Safety Rules

Work Area Safety

Guidelines for maintaining a safe and clean workspace to prevent accidents.

Electrical Safety

Precautions regarding power tools, plugs, and cords to prevent electric shock.

Personal Safety

Recommendations for operator safety, including PPE and body awareness.

Power Tool Use and Care

Power Tool Maintenance

Guidelines for keeping power tools in good working condition and safe for use.

California Proposition 65 Warning

Information regarding potential exposure to chemicals known to cause cancer or reproductive harm.

Specific Safety Rules for Bench Grinders

Grinding Wheel Requirements

Requirements for grinding wheels, including speed rating, compliance, and size.

Pre-Use Wheel Inspection

Procedure for inspecting grinding wheels for cracks or imperfections before use.

Grinder Inspection

Checking the grinder for missing parts or bent components before operation.

Use of Guards and Shields

Ensuring guards, spark deflectors, and eye shields are in place and used during operation.

Operator Positioning

Safe positioning during operation, avoiding the wheel's path.

Wheel Dressing Procedures

Tool Rest Adjustment

Maintaining the correct gap between the grinding wheel and the tool rest.

Handling Damaged Parts

Procedure for handling damaged parts or electrical component failures.

Electrical Information

Grounding Instructions

Explanation of grounding importance and proper plug usage for electric shock prevention.

Extension Cord Guidelines

Recommendations for selecting and using appropriate extension cords for safe operation.

Know Your Grinder

Assembly

Tool Rest Assembly

Instructions for assembling the tool rest and its support to the grinder.

Spark Deflector and Eye Shield Assembly

Steps for attaching spark deflectors and eye shields to the wheel guards.

Mounting to the Work Surface

Operation

Basic Operation

Step-by-step guide for operating the bench grinder safely and effectively.

Sharpening Lawn Mower Blades

Method for sharpening lawn mower blades using the bench grinder.

Sharpening Chisels and Screwdrivers

Technique for sharpening chisels and screwdrivers with the bench grinder.

Sharpening Drill Bits

Process for sharpening drill bits using the grinder's grooved work rest.

Sharpening Knives

Guidance on sharpening knives from the blade's heavy end towards the tip.

Sharpening Scissors

Instructions for safely sharpening scissors by disassembling and working on the outer surface.

Maintenance

General Cleaning and Inspection

Routine cleaning, dusting, and inspection of the grinder and its components.

Grinding Wheel Care and Replacement

Managing grinding wheel condition, replacement, and safety checks.

Using Wire or Buffing Wheels

Instructions for installing and using alternative wheel types like wire or buffing wheels.

Changing the Grinding Wheels

Replacing the Grinding Wheels

Step-by-step guide for safely removing and installing grinding wheels.

Exploded View & Parts List

Troubleshooting

Limited Two Year Warranty

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