Wen 4280 Instruction Manual
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Wen 4280 Instruction Manual

8-inch variable speed bench grinder
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MODEL 4280, BG4280
8-INCH VARIABLE SPEED
BENCH GRINDER
Instruction Manual
NEED HELP? CONTACT US!
Have product questions? Need technical support? Please feel free to contact us:
1-800-232-1195 (M-F 8AM-5PM CST)
TECHSUPPORT@WENPRODUCTS.COM
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.
WENPRODUCTS.COM
For replacement parts and the most up-to-date instruction manuals, visit

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  • Page 1 1-800-232-1195 (M-F 8AM-5PM CST) TECHSUPPORT@WENPRODUCTS.COM 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.

  • Page 2: Table Of Contents

    CONTENTS WELCOME Introduction ..................... 3 Specifications ....................3 SAFETY General Safety Rules ..................4 Bench Grinder Safety Warnings ............... 6 Electrical Information ..................8 BEFORE OPERATING Unpacking & Packing List .................9 Know Your Bench Grinder ................10 Assembly & Adjustments ................11 OPERATION &...

  • Page 3: Welcome

    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.

  • Page 4: Safety

    GENERAL SAFETY RULES 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. 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.
  • Page 5 GENERAL SAFETY RULES 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. 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.

  • Page 6: Bench Grinder Safety Warnings

    BENCH GRINDER SAFETY WARNINGS WARNING! Do not operate the power tool until you have read and understood the following instructions and the warning labels. BENCH GRINDER SAFETY 3. DO NOT wear loose clothing or jewelry as they might 1. This bench grinder is designed for sharpening and get drawn in by the tool.
  • Page 7 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.) 9. Disconnect the power source and allow the wheels to 4. Keep clear of moving parts. Keep arms, hands and come to a complete stop before making any adjustments other vital appendages away from the grinding and hon- to either the machine or the grinding wheels.

  • Page 8: Electrical Information

    ELECTRICAL INFORMATION 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.

  • Page 9: Before Operating

    UNPACKING & PACKING LIST WARNING! Do not plug in or turn on the tool until it is fully assembled according to the instructions. Failure to follow the safety instructions may result in serious personal injury. UNPACKING With the help of a friend or trustworthy foe, carefully remove the Bench Grinder from the packaging. Make sure to take out all contents and accessories.

  • Page 10: 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.

  • Page 11: Assembly & Adjustments

    ASSEMBLY & ADJUSTMENTS TOOL RESTS Fig. A Two different tool rests are included with this bench grinder. To install these tool rests: 1. Attach the tool rest support (Fig. A - 1) to the in- side surface of the wheel cover using a flat washer (Fig.

  • Page 12: Operation & Maintenance

    ASSEMBLY & ADJUSTMENTS WORKLIGHT The bench grinder provided has a flexible work light to maximize visibility during operation. A light bulb for the flexible work light is not included. Use a 120 Volt, 40 watt or less track light bult (type R20, medium base) for the onboard lamp.

  • Page 13: Maintenance

    OPERATION SHARPENING GUIDE: SCISSORS If possible, take the scissors apart to make the sharpening operation easier and safer. Remove material only from the outside surface and work from the heavy end of the blade toward the tip. KNIVES Remove metal from both faces of most knives, working from the heavy end of the blade toward the tip. SCREWDRIVERS The end of a properly sharpened screwdriver will be a perfectly flat rectangle, perpendicular to the center line of the shank.
  • Page 14 MAINTENANCE 4. In normal use, grinding wheels may become cracked, grooved, rounded at the edges, chipped, out of true or loaded with foreign material. Cracked wheels should be replaced IMMEDIATELY. While any of the other conditions can be remedied with a dressing tool (included), new wheels sometimes require dressing to make them round. 5.

  • Page 15: Troubleshooting Guide

    MAINTENANCE USING A WIRE OR BUFFING WHEEL A wire or buffing wheel can be installed onto either side of the grinder as needed. More spacers are required for these types of grinding 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.

  • Page 16: Exploded View & Parts List

    EXPLODED VIEW & PARTS LIST Part Number Description Qty. Part Number Description Qty. 4280-001 Coolant Tray 4280-041 Sensor 4280-002 Circuit Board 4280-042 Bushing 4280-003 Screw (ST2.9x5) 4280-043 Nut (M5) 4280-004 Circuit Board Cover 4280-044 Left Eye Shield Bracket 4280-005 Screw Assembly (M4X8)
  • Page 17 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.

  • Page 18: Warranty Statement

    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 quality. LIMITED WARRANTY OF WEN PRODUCTS FOR HOME USE GREAT 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.
  • Page 19 NOTES...
  • Page 20 THANKS FOR REMEMBERING V. 2021.06.23...

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